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FAQs

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Work Areas & Outlets (back to top)

Q: Can I terminate voice jacks using the included wiring cap?

A: ICC includes retention caps to protect the terminals and protect from dust but are not designed for terminating the wires. ICC recommends using the JackEasy tool or traditional 110 punch down tool for termination.

Q: What is the difference between the 50 and 75 Ohm BNC connectors?

A: ICC offers BNC video connectors, the 50 Ohm suitable for analog video and 75 Ohm for digital video.

Q: Does ICC supply mounting hardware with faceplates?

A: ICC faceplates come with two mounting screws for single gang faceplates four mounting screws for double and triple gang faceplates.

Q: What is the maximum distance for ICC HDMI connectors and Decorex Inserts (IC107HDMxx, IC107DH2xx, IC107DDHxx)?

A: Depends on the HDMI cable, the typical maximum distance for HDMI cable is 10 meters (33 feet).

Q: What does the S mean on the back of the P/N: IC107SAPxx? Which wire is used for the right and left audio channels?

A: Tip – Positive – Left Channel Ring – Negative – Right Channel Sleeve – Ground All three connections must be made to have stereo sound.

Q: Can ICC's CAT 5e modules IC1078E5xx and IC1078F5xx run up to 350MHz?

A: The modules are capable of running up to 350 MHz although there is no standard requiring the module to run at that level. Nor is there any performance requirement established at that frequency.

Q: Can ICC’s 8P8C modular plug be used in the CAT 5, CAT 5e, or CAT 6 applications?

A: The 8P8C modular plug is compatible with the CAT 5 or CAT 5e connectors found in mechanical structures. The performance depends on the lowest category of cable, patch cord, and jacks used. Cat 6 patch cords should be manufactured and not made in the field.

Q: Why does the IC1078E5xx Category 5e EZ Module show open when stranded cable is used?

A: The IC1078E5xx Category 5e EZ Module is rated at 22-24 AWG solid wire only. Solid core connectors are designed so that the blade in the pin connection is split into two tines, which firmly grasps the solid wire. Stranded wire connectors are designed so that the blade pierces the strand. If the wrong type of connector is used, the most likely result will be an intermittent connection.

Q: Does ICC manufacture a modular plug for solid wire?

A: ICC offers ICMP8P8C6E (CAT 6), ICMP8P8C6S (CAT 6 SHIELDED), ICMP8P8C5E (CAT5E), ICMP8P8SRD (8P8C) and ICMP6P6SRD (6P6C).

Q: What is the difference between the EZ and HD jacks?

A: ICC EZ jacks provide - Pair-to-Pair, Single Row Terminates in Seconds! • Fits all Classic and Elite faceplates • Fits all surface mount boxes • Fits blank patch panels patch panels (excepts HD style IC107BP241 & IC107BP482)) ICC HD jacks provide - When You Need to Fit More Jacks in a Tight Space. • Fits all Décorex style faceplates • Fits all furniture faceplates • Fits all blank patch panels, surface mount boxes • High-density split pair termination

Q: What is the difference between Shielded twisted pair and Screened twisted pair cable?

A: Shielded twisted pair cable (STP) is most often known as IBM Type I cable or STP-A. It is defined in ANSI/TIA/EIA-568-A as two individually twisted pairs separated by a shield with a nominal impedance of 150 Ohms. Screened twisted pair cable (ScTP) can be considered a very close relative of STP. It consists of 4 pairs of 22 or 24 AWG wire enclosed by an out foil. Impedance is 100 Ohms.

Q: What faceplates will work with the ICC low profile mounting box (PN: IC250MBSWH)?

A: The faceplates that are compatible with the low profile mounting box are wall plates and Decorex inserts with screw-down terminals only. The low profile mounting faceplates are designed for rear cable entry only so they will not be compatible with ICC raceway. Dual integrated faceplates with F-type connectors will not work with the low profile mounting box.

Q: Why is 50-micron gold plating Important on ICC RJ45 Modular Connectors & Modular Plugs?

A: The RJ45 Modular Connectors & Modular Plugs are the main connection between devices. There must be a type of metal to accomplish and maintain a stable conductivity. Gold is the perfect solution since it does not corrode and very durable. Others metals such as copper and nickel will degrade and lose connection over time when exposed to the outside elements like humidity and moisture. The amount of gold plating that can be placed on connectors is measured in microns. 50 microns is the thickest gold plating available, which is great for maintaining a fast and stable connection and can deliver up to four times as much throughout. FCC and IEC specifications call for a minimum amount of gold or nickel to be used in RJ45 plugs, but a recent study found that more than 50% of tested plugs did not meet this minimum. Because there is a large amount of inferior Ethernet cables on the market, it is important to look for those that specifically say that they have 50 microns of gold plating. FCC and IEC specifications also require connectors that are at least 99% pure gold and have no surface defects.
If cable manufacturers advertise their plugs and connectors have 50-micron gold plating then most likely they are using 99% pure gold.

Q: Why ICC doesn’t offer CAT 6 and CAT 5e FTP/shielded connectors?

A: IC1078S6A0 is ICC’s solution for FTP modular connector requirements.  Our CAT6a HD FTP shielded modular jack is designed to deliver advanced performance for 10G applications and it is backward compatible with CAT 6 and CAT 5e systems.  Most importantly it is competitively priced against our competitors’ CAT5e and CAT6 FTP jacks. 

It is compatible with TIA-568A/B wiring; it works with 22~24awg solid wires, and it is compatible with our 4-pair JackEasy tool. 

IC1078S6A0 can be installed with ICC 6A FTP blank patch panel IC107PPS6A and ICACSGK6AS grounding wire to complete an FTP system.

Q: What is a keystone module? Is ICC keystone modules interchangeable with each other? Is ICC keystone products interchangeable with other manufacturer’s keystone products?

A: Keystone modules have a rectangular face of .58” wide by .64” high and are held in place with flexible tabs. This allows them to be snapped into a mounting plate with the ports. All keystones, regardless of the type of jack they carry, are interchangeable and replaceable. This provides much flexibility in arranging and mounting many different types of electrical jacks in one plate or panel without requiring customized manufacturing (Please note: ICC EZ are not compatible with the High Density(HD) patch panels)


Q: What ICC products is the EZ style Modular Connectors compatible with?

A: EZ Style Modular Connectors Compatibility with Patch Panels
   • IC107PPU6A
   • IC107BE241
   • IC107BP8VB

   EZ Style Modular Connectors Compatibility with Faceplates
   EZ style modular will work will all of the ICC configurable faceplates except for the ICC Decorex inserts, EZ modular will only work with the following Decorex inserts.
   • IC107DI1xx
   • IC107DI2xx
   • IC107DI3xx
   • IC107DPIxx

Q: What is the difference between the EZ and HD Keystone Jacks?

A: ICC EZ Keystone Jacks provide -
    Pair-to-Pair, Single Row Terminates in Seconds!
   • Easy to terminate.
   • Fits all Classic and Elite faceplates
   • Fits single column Décorex style faceplates.
   • Fits all surface mount boxes
   • Not compatible with faceplate, inserts, blank panels that accept only HD modules.

   ICC HD Keystone Jacks provide -

   High Density, Low Profile to Fit More Jacks in a Tight Space.

   • Fits all Décorex style faceplates

   • Fits all furniture faceplates

   • Fits all blank patch panels, surface mount boxes

   • High-density split pair termination

Q: What types of mounting screws are used on ICC faceplates?

A: Majority of ICC faceplates (IC630, IC107F, IC107LF, IC107D, IC107S, IC106, and ICRDSV) come with Slotted Screws.  Only ICC stainless steel faceplates (IC107SF) come with Phillips Screws.

The deep slot on the Slotted Screwprevents the screwdriver from slipping and scraping the paint off during torque.   Slotted screwsare more expensive to manufacture due to extra milling step required to deepen the slot and are commonly used on electrical faceplates.   Phillips Screwsare designed for ease of use but tend to slip out easily damaging the head and paint.  Therefore, ICC only use it on stainless steel faceplate where there is no over paint on screws.


Q: How far can I remove the sheath on my CAT 5 or CAT 5e cable?

A: The TIA standard does not determine the length of un-sheathing; however, it is a good practice to remove the minimum you need for termination. Maintaining the twist is what is important (0.5” from termination point TIA/EIA-568.1 section 10.2.3) to keep the balance of the twisted pairs from being disturbed excessively to minimized near-end cross talk (NEXT)..

Q: Can we get gigabit performance from Category 5 UTP cables?

A: For any new installations, we recommend Category 5e or Category 6 cables and connectivity. On any existing Category 5 installations, you’ll need to re-test and pass PowerSum, ELFEXT, and Return Loss in order to run gigabit. D. Racks & Cable Management

Q: What is the purpose of the ICC’s Voice Modules (ICRESVPA3C, ICRESVPA2C & ICRESVPA1C) with RJ31X Jack?

A: The RJ31X Surface Mounting Jack is used with security systems or similar applications that feature a remote monitoring option. The RJ31X incorporates a shorting bar so that when the alarm reporting device is not plugged in, the phone line continuity is still maintained. This allows an alarm reporting device to be disconnected for testing or other options without disturbing phone service.

Q: What is the difference between T-568-A and T-568-B?

A: The pairs 2 (orange) and 3 (green) are interchanged. T-568-A is the original wiring configuration in TIA-568. T-568-B was put in the specification to accommodate the installation base at the time. T-568-B is still more widely used today. T-568-A is typically used in government and residential installations

Q: Does ICC manufacture a low profile mounting box that is shallower than the 1.89 inches deep NEMA box?

A: ICC provides a low profile single gang mounting box that is only 0.92 inch in depth (IC250MBSxx). Low profile surface mounting boxes are also available.

Q: If a faceplate hole has been cut too large in modular furniture, does ICC offer a solution?

A: ICC’s Universal Modular Furniture Faceplates (IC108UFPxx and IC108UF4xx) cover faceplate holes from a minimum of 0.875 inch x 2.375 inches to a maximum of 2.0 inches x 3.5 inches.

Patch Panels & Cross-Connect (back to top)

Q: What is the difference between 10-32 and 12-24 rack screws?

A: 12-24 Threads – ICACSS01BK - active
12-24 is now more common than 10-32 in pre-threaded racks. 12-24 fasteners are slightly larger than 10-32 and have courser threads. The term 12-24 comes from Unified and American Screw Threads for Bolts, Nuts, and Machine Screws standards published by ANSI B1.1-1974. The number “12” is simply a size designator with no numerical meaning. The number “24” refers to 24 threads per inch. You can identify a 12-24 screw by measuring the diameter with a ruler at slightly less than 7/32″ (slightly larger than 3/16″ or 0.210″).

10-32 Threads – ICACSS02BK - obsolete
10-32 threads are historically the original rack screw type. The term 10-32 comes from Unified and American Screw Threads for Bolts, Nuts, and Machine Screws standards published by ANSI B1.1-1974. The number “10” is simply a size designator with no numerical meaning. The number “32” refers to 32 threads per inch. You can identify a 10-32 screw by measuring the diameter with a ruler at exactly 3/16″ (0.190″).

ICACSS01BK

Q: What is a permanent link test?

A: Permanent Link Test: The tester main and remote have adapters with integrated cords of known performance. The device can therefore remove the loss of the cord from the total measurement, providing the performance of the link.
patch panel + cable + outlet (see diagram below):

Why test an incomplete system without the cords?
By testing the permanent link, information is provided about the permanently fixed part of the cabling. A “pass” for this test ensures that the system is always functioning.

Channel Test: The main and remote testing units have adapters with RJ45 ports. These adapters connect to the cabling with standard patch cords. The test is therefore covering the complete channel

cord + patch panel + cable + outlet + cord (see diagram below):

Q: Can ICC CAT6 solution support 10GBase-T?

A: Yes, ICC CAT6 modular jack, patch panel, and bulk cables can support 10GBase-T but with reduced operating distance.  But CAT6 cabling is not recommended for NEW installations targeted to support 10GBase-T application.  CAT6a is the choice for 10GBase-T copper but this does not mean the “installed” CAT6 cable will not support 10GBase-T, especially at shorter lengths.  To address the question of CAT6 cabling or 10GBase-T, TIA publishes TSB-155-a, Guide Lines for the Assessment and Mitigation of Installed Category 6 Cabling to Support 10GBase-T.

TSB-155-A states that 10GBase-T can operate over Channel lengths up to 37 meter of CAT6 cabling and 10GBase-T should operate over Channel lengths between 37 and 55 meters of cat 6 cabling depending on the alien crosstalk environment.  TSB-155-a further defined “installed” CAT6 cabling meeting the requirements of ANSI/TIA-568-C.2.  All ICC CAT6 products are guaranteed to meet or exceed TIA-568-C.2 requirements.

Below is a chart of Speed vs Bandwidth and distance for your reference.

Q: What is the application for RJ31X Jack with shorting bar?

A: The RJ31X Surface Mounting Jack with shorting bar is used with security systems or similar applications that feature a remote monitoring option.  The RJ31X incorporates a shorting bar so that when the alarm reporting device is not plugged in, the phone line continuity is still maintained.  This allows an alarm reporting device to be disconnected for testing or other options without disturbing phone service.  Below is the wiring diagram for your reference, the registered terminal equipment on this diagram is the security system.


RJ31X Jack with shorting bar is available on following ICC part numbers.
Surface Mount Jacks Integrated with Voice, KEYED: IC635DS4IV/WH, IC635DS8IV/WH
Residential Enclosures, Voice Modules: ICRESVPA3C, ICRESVPA2C and ICRESVPA1C

Q: What is the difference between CAT6 & CAT6e?

A: Category 6
The mainstream adoption of Gigabit Ethernet (1000BASE-T) required new industry-standard cables capable of transmitting at a higher frequency of 250 MHz. Category 6 cable uses thicker-gauge wire, increased shielding, and more pair twists per inch to reduce signal noise and interference. The tighter specifications guarantee that 100-meter runs of Category 6 are capable of 1000 Mbit/s transfer speeds. 10-Gigabit Ethernet speeds are achievable when reducing cable lengths to less than 50 meters.
Category 6e
CAT6e is an augmented specification designed to double transmission frequency to 600 MHz. By wrapping CAT6e in grounded foil shielding, full 10-Gigabit Ethernet speeds can be reached without sacrificing the max cable length of 100 meters. There is no standard for CAT6e that is recognized by TIA like there is for the CAT5e. The 600Mhz rated CAT6e is ICCs premium offering of CAT6 like most of the bulk cable manufacturers.

Q: Can ICC patch panel support POE?

A: Yes, ICC patch panels, 5e, 6 and 6a, can support IEEE 802.3AT POE+ applications.  Below is the property table of POE and POE+ for your reference.

PD - Powered Device
PSE - Power Sourcing Equipment
POE – Power Over Ethernet

Q: What are the smallest patch panels ICC manufactures?

A: ICC manufactures 12-port Vertical Patch Panels (ICMPP12V5E and ICMPP12V60), 12-port Vertical USOC Patch Panels (ICMPP012U6), and Vertical Blank Vertical Patch Panels (IC107BP12V & IC107BP8VB) with their mounting brackets.

Q: What is the difference between Shielded twisted pair and Screened twisted pair cable?

A: Shielded twisted pair cable (STP) is most often known as IBM Type I cable or STP-A. It is defined in ANSI/TIA/EIA-568-A as two individually twisted pairs separated by a shield with a nominal impedance of 150 Ohms. Screened twisted pair cable (ScTP) can be considered a very close relative of STP. It consists of 4 pairs of 22 or 24 AWG wire enclosed by an out foil. Impedance is 100 Ohms.

Q: Where can I get a 3 pair Category 3 Telco patch panel?

A: ICC manufactures voice grade USOC patch panels available in Telco or 110 styles.

Q: How is a 110 Block wired?

A: The color code on the wiring block must be followed exactly. The configuration is as follows: ? Pair 1 (White/Blue and Blue/White) ? Pair 2 (White/Orange and Orange/White) ? Pair 3 (White/Green and Green/White) ? Pair 4 (White/Brown and Brown/White)

Q: Do all ICC patch panels come with a bracket or rack?

A: The only patch panels that come with the mounting brackets are the Vertical Patch Panels (ICMPP12V5E & ICMPP12V60), Vertical USOC Patch Panels (ICMPP012U6), and Vertical Blank Patch Panels (IC107BP12V & IC107BP8VB). All other patch panels are designed to be installed in 19 inch racks or wall mountable equipment. (Racks are not included).

Q: Is it possible to use a Telco Patch Panel in Category 5e rated system?

A: ICC Telco Patch Panels are not Category 5e compliant.

Q: Do you have a Telco patch panel with RJ45 connectors?

A: Yes, ICMPP24T2C, ICMPP48T2C, ICMPP24T4C and ICMPP48T4C come with RJ-45 ports.

Q: Does ICC manufacture a patch panel that can be wall mounted?

A: ICC’s 12-port Vertical Patch Panels (ICMPP12V5E and ICMPP12V60), 12-port Vertical USOC Patch Panels (ICMPP012U4 and ICMPP012U6), and Vertical Blank Patch Panels (IC107BP12V, IC107BP8VB and IC107PP8VB) come with the mounting brackets that can be fastened to a wall. ICC also offers wall mounted brackets that accept standard 19 inch rack mounted patch panels.

Q: Does ICC manufacture a configurable patch panel?

A: ICC manufactures the IC107 Blank Patch Panels in 12, 16, 24, 32, and 48 ports (IC107BPxxx and IC107PPxxx). Customers may purchase the IC107 modules, and configure the patch panels needed.

Q: Are the connectors on the ICC’s Telco Patch Panels male or female?

A: All ICC Telco Patch Panels accommodate 50 pin male cable connectors.

Q: How many times is it possible to rewire (punch down wire) 110 Connecting Block on a 110 Wiring Block or Patch Panel?

A: 200 times.

Q: Which of the two following terms support speed and which is correctly used for bandwidth MHz and Mbps?

A: Mbps (mega bits per second) refers to the speed of data, whereas MHz (mega hertz) relates to the bandwidth.

Q: Does ICC manufacture a Telco Patch Panel?

A: ICC manufactures several Telco Patch Panels. These high-density patch panels are available in 2 and 4 conductor, 24 and 48 port configurations.

Q: What is the difference between T-568-A and T-568-B?

A: The pairs 2 (orange) and 3 (green) are interchanged. T-568-A is the original wiring configuration in TIA-568. T-568-B was put in the specification to accommodate the installation base at the time. T-568-B is still more widely used today. T-568-A is typically used in government and residential installations.

Q: Are all ICC’s 8P8C Modular Connectors TIA/EIA Categories rated and compliance?

A: Yes, ICC manufactures only Category 5e, 6, 6A 8P8C Modular Connectors.

Q: Can an RJ-11 plug be used in an RJ-45 jack?

A: Using an RJ-11 plug in an RJ-45 jack is not recommended. The RJ-11 plug will fit loosely in the RJ-45 jack. While it might work for voice transmission, it will certainly not function properly for data transmissions. Furthermore, the RJ-11 will eventually damage the outside pins on the RJ-45 jack.

Q: Can you recommend a field tester for wiring set ups?

A: The most commonly used testers are Fluke, Ideal, Microtest, and Agilent.

Q: What are the differences between Category 5 and Category 5e ratings?

A: Both Category 5 and Category 5e consist of unshielded twisted pair with 100 Ohm impedance and electrical characteristics supporting transmissions up to 100 MHz. The difference between Category 5 and Category 5e is in transmission performance. Category 5e components are most suitable for a high-speed Gigabit Ethernet, while Category 5 components may function to some degree in a Gigabit Ethernet. They perform below standard during high-data transfer scenarios: Channel Performance Characteristics Parameter CAT 5 CAT 5 CAT 5e (ISO Class D) 100 MHz 100 MHz 100 MHz Attenuation 24.0dB 24.0dB 24.0dB NEXT 27.1dB 27.1dB 30.1dB PSNEXT 24.0dB N/A 27.1dB ELFEXT 17.0dB 17.0dB 17.4dB PSELFEXT 14.4dB 14.4dB 14.4dB ACR (derived) 3.1dB 3.1dB 6.1dB PSACR (derived) N/A N/A 3.1dB Return Loss 10.0dB 8.0dB 10.0dB

Q: What is affected by RoHS?

A RoHS will affect anyone who manufactures in the European Union (EU) and sells electrical and electronic equipment under their own brand. It will also affect resellers in the European Union (EU) who sell products under their own brand or products produced by other suppliers.

Q: What are the standard color codes for 25-Pair UTP cables?

Cords & Cable Assemblies (back to top)

Q: What is REELEX and why is the REELEX logo on all ICC bulk cable cartons?

A: REELEX is a technological method of winding cable products on a specialized coiling machine. This specialized wind results for superior payout performance. It also helps dispenses cable smoother to prevent twists, kinks, snags and tangles. REELEX is the brand of choice for packaging thousands of product types by over 100 of the largest wire and cable manufactures.

• No Twist
The coiling process imparts self-cancelling twists in the product so that when the product is pulled from the package, it dispenses perfectly straight.

• No Overruns
Since the coil does not rotate, there is no spinning reel and no inertia.

• No Tangles
Coils unwind from the inside-out with no moving parts so the product dispenses straight, easy, and snag-free.

• Environmentally Friendly
The packaging uses the most readily recycled materials in the world.

• Carton Damage? No Problem
The coil does not depend on the package to work properly. If the package is minor damage, it will not affect the dispensary of the cable.

• Lightweight and Easy to Handle
REELEX can be carried with one hand making transport easy.

• Less Waste
REELEX cardboard boxes can easily be recycled, more efficiently than spools and reels.

Q: Can you provide me with a conduit fill capacity chart for ICC premise cable? 

A: This chart is based on the maximum number of cables permitted in conduit under the National Electric Code (NEC) and is calculated on the area of the cables with 40% of the conduit filled.  For conduit runs of 50 to 100ft, the installed number should be reduced by 15% or use the next size larger conduit.  Each 90° conduit bend may be estimated as equal to the friction of 30ft of straight level conduit. 

Q: What kind of cable do you use in your patch cord?

A: We use 24 AWG stranded UTP cable for CAT 5e and 23 AWG stranded UTP cable for CAT 6.

Q: Can I use telephone line cords to connect a LAN?

A: Using telephone line cords to connect a LAN is not recommended. Line cords are designed to work with low speed applications such as voice transmission.

Q: How far can I remove the sheath on my CAT 5 or CAT 5e cable?

A: The TIA standard does not determine the length of un-sheathing; however, it is a good practice to remove the minimum you need for termination. Maintaining the twist is what is important (0.5” from termination point TIA/EIA-568.1 section 10.2.3) to keep the balance of the twisted pairs from being disturbed excessively to minimized near-end cross talk (NEXT).

Q: Do you have to use the manufacturer’s patch cords to get Category 6 performance?

A: The Category 6 standard has specifications for patch cords and connectors that are intended to assure interoperable Category 6 performance. If manufacturers can demonstrate that each component meets the requirements in the standard, minimum Category 6 performance will be achieved. However, manufacturers may also tune their products to perform better than the minimum Category 6 requirements and in these cases using compatible patch cords and connectors may lead to performance above the minimum Category 6 requirements.

Q: Why are their booted and unbooted patch cords? What is the purpose of the boot?

A: The purpose of the boot is to protect the latch from snagging and breaking off such as in the case where you are pulling the cable. The unbooted / slimline cords are best suited for use in high density applications such as patch panels.

Q: Can you recommend a field tester for wiring set ups?

A: The most commonly used testers are Fluke, Ideal, Microtest, and Agilent.

Q: Will contractors be able to make their own patch cords?

A: Category 6 patch cords are precision products, just like the cables and the connectors. They are best manufactured in a controlled environment to ensure consistent, reliable performance. The patch cords also need to be tested for transmission performance to ensure that they will not degrade the performance. All this supports leaving patch cords as a factory assembled product than a field assembled product for better consistency and reliability.

Q: What is the difference in stranded and solid cable?

A: Stranded cable has several small gauge wires in each separate insulation sleeve. Solid has one large gauge wire in each sleeve. Stranded cable is more flexible, making it more suitable for shorter distances and tight bends such as patch cords. Solid cable has better electrical performance.

Q: What is affected by RoHS?

A: RoHS will affect anyone who manufactures in the European Union (EU) and sells electrical and electronic equipment under their own brand. It will also affect resellers in the European Union (EU) who sell products under their own brand or products produced by other suppliers.

Racks & Cable Management (back to top)

Q: What is the difference between 10-32 and 12-24 rack screws?

A: 12-24 Threads – ICACSS01BK - active
12-24 is now more common than 10-32 in pre-threaded racks. 12-24 fasteners are slightly larger than 10-32 and have courser threads. The term 12-24 comes from Unified and American Screw Threads for Bolts, Nuts, and Machine Screws standards published by ANSI B1.1-1974. The number “12” is simply a size designator with no numerical meaning. The number “24” refers to 24 threads per inch. You can identify a 12-24 screw by measuring the diameter with a ruler at slightly less than 7/32″ (slightly larger than 3/16″ or 0.210″).

10-32 Threads – ICACSS02BK - obsolete
10-32 threads are historically the original rack screw type. The term 10-32 comes from Unified and American Screw Threads for Bolts, Nuts, and Machine Screws standards published by ANSI B1.1-1974. The number “10” is simply a size designator with no numerical meaning. The number “32” refers to 32 threads per inch. You can identify a 10-32 screw by measuring the diameter with a ruler at exactly 3/16″ (0.190″).