Skip to content

Names the plug maker and part, and rules out flat cable

BIGtec Hirose TM31 plug, Cat 6a to 500 MHz, AWG 24-27, cable 6.6 mm, pack of 100

The only plug on this shelf identified by its own manufacturer and part reference rather than by a house name, published at a single sheath diameter of 6.6 mm and stated outright as not for flat ribbon cable.

BIGtec Hirose TM31 shielded RJ45 plug in grey with insertion guide and boot

BIGtec Hirose TM31 plug, Cat 6a to 500 MHz, AWG 24-27, cable 6.6 mm, pack of 100

The only plug on this shelf identified by its own manufacturer and part reference rather than by a house name, published at a single sheath diameter of 6.6 mm and stated outright as not for flat ribbon cable.

Category rating
Cat 6a to 500 MHz — stated in the second bullet, with Cat 6, 6a and 7 cable named in the title. ISO/IEC 11801 is named in the third bullet, together with PoE conformity to 802.3af and use in 10 Gigabit networks
Solid or stranded compatibility
Not published on the listing — the gauge window is written as AWG 24-27 without the conductor-count suffix that would carry the answer, and neither construction is named in the five bullets
Shielded or unshielded
Shielded — stated in the third bullet, with gold-plated contacts named alongside
Accepted conductor diameter
AWG 24-27 — stated in the title and again in the second bullet. No millimetre figure is given for the conductor
Accepted cable diameter
6.6 mm — stated in the second bullet as a single figure rather than a range. It is the only outside diameter on this shelf quoted without a tolerance either side of it
Load bar presence
Supplied — the first bullet lists an insertion guide with the plug and the boot, as the three things in the packet
Pass-through or standard body
Standard — the plug is identified as a Hirose TM31 and nothing on the page describes conductors emerging at the front or being trimmed flush
Pack quantity
One hundred — stated in the title
Amazon reference
B01LYUHUOK (same reference on 2 Amazon marketplaces)
EAN
4051687021129
  • The plug is identified by its own maker and part reference, which nothing else here does
  • States what it will not take — flat ribbon cable — rather than leaving the shape unmentioned
  • Solid or stranded is not stated, and the gauge notation carries no suffix to imply it

Best for: Round screened cable of a known diameter, where the plug reference itself is what has to be matched to an existing installation.

≈ 92 €
Check price on Amazon

Specifications

Category rating
Cat 6a to 500 MHz — stated in the second bullet, with Cat 6, 6a and 7 cable named in the title. ISO/IEC 11801 is named in the third bullet, together with PoE conformity to 802.3af and use in 10 Gigabit networks
Solid or stranded compatibility
Not published on the listing — the gauge window is written as AWG 24-27 without the conductor-count suffix that would carry the answer, and neither construction is named in the five bullets
Shielded or unshielded
Shielded — stated in the third bullet, with gold-plated contacts named alongside
Accepted conductor diameter
AWG 24-27 — stated in the title and again in the second bullet. No millimetre figure is given for the conductor
Accepted cable diameter
6.6 mm — stated in the second bullet as a single figure rather than a range. It is the only outside diameter on this shelf quoted without a tolerance either side of it
Load bar presence
Supplied — the first bullet lists an insertion guide with the plug and the boot, as the three things in the packet
Pass-through or standard body
Standard — the plug is identified as a Hirose TM31 and nothing on the page describes conductors emerging at the front or being trimmed flush
Pack quantity
One hundred — stated in the title
Amazon reference
B01LYUHUOK (same reference on 2 Amazon marketplaces)
EAN
4051687021129

On the listing

A shielded eight-pole RJ45 plug identified as a Hirose TM31 in grey, sold a hundred to a packet, each supplied with an insertion guide and a kink-protection boot. The second bullet gives the specification: Cat 6a cable to 500 MHz, a cable diameter of 6.6 mm, AWG 24-27. The third names PoE conformity to 802.3af, ISO/IEC 11801, a screened body, gold-plated contacts and 10 Gigabit networks. The fourth states that the plug is for round LAN cable and not for flat ribbon cable. The fifth lists what the maker sees it feeding, from telephone hubs, switches and routers to medical diagnostic equipment, test and measuring instruments and network hardware supporting 10 Gbit/s Ethernet.

A part number instead of a house name

Every other packet on this shelf is described by a brand and a category. This one names the component and its reference. Hirose TM31 is a thing that can be looked up, matched and reordered independently of whoever is selling it this year, which is the difference between a consumable and a specified part.

That matters on an installation somebody else will extend. A cabinet terminated with a named part can be added to in five years with the same part; a cabinet terminated with a hundred anonymous plugs can only be added to with something that looks like them.

6.6 millimetres, exactly

The sheath figure here is unusual in its form as much as its value. Two other plugs on this shelf publish a window — up to 5.8 mm on one, 5.0 to 9.0 mm on another. This one publishes a single number with nothing either side of it.

A single figure is a target rather than a range, and cable jackets are not manufactured to a hair. Whether it should be read as a nominal figure with the usual tolerance around it, or as a ceiling, the listing does not say. What is beyond doubt is that a cable measuring 8 mm across is not what this plug was drawn for, and one measuring 5 mm is not either.

The exclusion that is printed

The fourth bullet says the plug is for round cable and not for flat ribbon cable, and that is a genuinely useful sentence. Flat cords are sold in volume — two of the seven in the patch cable hub on this site are flat — and their internal geometry is a ribbon, not a bundle. A body built around 6.6 mm of round jacket has neither the aperture nor the grip for one.

Being told is better than finding out at the crimp. One other listing on this shelf prints a refusal of its own, and it refuses a gauge rather than a shape; between them they cover the two ways a plug and a cable fail to meet.

The construction that is still missing

For all the numbers here, the word solid does not appear and neither does stranded. The gauge is written AWG 24-27, without the suffix that would carry the answer — the notation one other plug on this shelf uses to say both constructions at once.

So the geometry is settled and the contact shape is not. On round screened cable of the right diameter that is a smaller gap than it would be elsewhere, but it is still the line this shelf gets wrong most often.

Before ordering

Measure the jacket and compare it against 6.6 mm before anything else, since that is a point rather than a window. Then ask the seller which conductor construction the contacts are cut for, because the page does not say. And if the cable in your hand is flat, this packet is explicitly not for it — the maker says so in its own fourth bullet.

Availability

Priced at roughly 92 € on the German Amazon store the day this page was checked.

In the French Amazon catalogue with no live offer against it: the reference exists, nobody is filling it.

The American, British, Italian and Spanish Amazon stores returned nothing at all, so the buy button there opens a search in that country rather than a page that would not load.

Every figure in this section is what Keepa held on the day this page was last updated. Stock and prices move without warning.

Prices quoted in this text were read on 10 September 2026. The live price is at the top of the page.

More RJ45 connectors

  • Cable Matters Cat 6 pass-through RJ45 plugs in a screw-top storage tub

    Cable Matters Cat 6 pass-through plug, 23-26 AWG, conductors 0.97-1.07 mm, cable to 5.8 mm, pack of 100

    The only plug on this shelf that publishes both a conductor diameter and an outside diameter in millimetres, and the only one that says outright it is for unshielded cable — with a title and a bullet that disagree about stranded.

    Category rating
    Cat 6 — stated in the title and the first bullet, rated in the third for a gigabit Ethernet channel and described as backwards compatible with Cat 5e
    Solid or stranded compatibility
    Both, in the bullets — the second states that the plug terminates solid or stranded cable with a three-point contact. The title says it is for solid wire, so the page carries two answers; the wider one is the maker’s own and is reported here with the difference noted
    Shielded or unshielded
    Unshielded — stated in the first bullet, which says the plug terminates unshielded twisted-pair cable. It is the only plug on this shelf to state a screening answer of either kind rather than claiming a screen
    Accepted conductor diameter
    0.97 to 1.07 mm over the insulation, 23 to 26 AWG — both stated in the first bullet. It is one of only two plugs here to publish a millimetre figure for the conductor
    Accepted cable diameter
    Up to 5.8 mm outside diameter — stated in the first bullet. It is the tightest of the three outside limits published on this shelf
    Load bar presence
    Not published on the listing — the second bullet describes feeding the wires through openings in the pass-through body instead, which is the function a load bar performs on a standard plug
    Pass-through or standard body
    Pass-through — stated in the title and in the first two bullets, with the conductors fed through the front and the plug crimped afterwards
    Pack quantity
    One hundred — stated in the title and the fourth bullet, supplied in a screw-top storage tub with a moulded handle
    Amazon reference
    B07PXMN2VK (same reference on 6 Amazon marketplaces)
    EAN
    0818707025734
    • Both diameters are published in millimetres, which no other plug on this shelf manages
    • States that it is for unshielded cable instead of leaving the screening question open
    • The title says solid wire and the second bullet says solid or stranded, which is a page arguing with itself

    Best for: A large run of leads made from unshielded Cat 6 stock, by someone who already owns a tool that trims pass-through plugs.

    ≈ $18 / £11 / 16 €
    Check price on Amazon
  • deleyCON shielded Cat 6a RJ45 plug with strain-relief boot, one of four

    deleyCON Cat 6a IDC plug, solid conductors AWG 22-25, pack of 4

    A plug that needs no crimping tool at all, closed onto an insulation-displacement strip by hand — and one that publishes its conductor window as solid core only, which rules out every stranded patch lead.

    Category rating
    Cat 6a — stated in the title, with transmission to 10 Gbit/s and 500 MHz in the fifth bullet. Two standards are named in the first bullet, ISO/IEC 11801 and TIA568-C2
    Solid or stranded compatibility
    Solid only — stated in the second bullet as solid or full conductor at AWG 22 to 25, for rigid installation cable. Stranded conductors are never offered, and the fourth bullet lists only installation cable among the categories it suits
    Shielded or unshielded
    Shielded — stated in the title and in the first bullet. Nothing describes how the body bonds to the cable screen
    Accepted conductor diameter
    AWG 22 to 25 — stated in the second bullet as the conductor window. No figure in millimetres appears beside it, so a cable that publishes only a diameter has to be converted before it can be checked
    Accepted cable diameter
    Not published on the listing — the outside diameter of the sheath is never given, on a plug whose body has to close around it. A strain-relief boot is named instead
    Load bar presence
    Not published on the listing — the third bullet describes snap-in technology in which the conductors are pressed onto the insulation-displacement strip as the plug is closed. No separate lacing insert is named
    Pass-through or standard body
    Neither — this is a field-terminated insulation-displacement plug, stated in the first bullet as needing no crimping tool. Nothing describes conductors emerging at the front, and nothing describes a crimp
    Pack quantity
    Four — stated in the title
    Amazon reference
    B089T6TPSC (same reference on 6 Amazon marketplaces)
    EAN
    4250580147961
    • Terminated with no crimping tool, which removes the one purchase that stops most people making a lead
    • Names two standards rather than a category on its own
    • Solid conductors only, so it will not finish a stranded patch lead

    Best for: A repair or an extension on a fixed run of solid installation cable, made by hand at the point where the cable comes out of the wall.

    ≈ 12 €
    Check price on Amazon
  • DIGITUS Cat 6A shielded field-terminated RJ45 plug in nickel-plated zinc

    DIGITUS Cat 6A field-terminated plug, AWG 27/7 to 22/1, cable 5.0-9.0 mm, pack of 10

    The plug here with the widest published sheath window, 5.0 to 9.0 mm, terminated without tools onto solid or stranded conductors alike — and the only one on this shelf to publish an operating temperature range.

    Category rating
    Cat 6A — stated in the title and the first bullet, with transmission to 10 Gigabit per second and suitability for PoE applications up to PoE+, named as IEEE802.3at
    Solid or stranded compatibility
    Both — stated in the second bullet as a toolless termination for solid and stranded conductors, colour-coded to EIA/TIA 568 A and B. The gauge notation carries the same answer: the suffix on 27/7 is a stranded bundle and the suffix on 22/1 a single core
    Shielded or unshielded
    Shielded — stated in the fifth bullet, which names a nickel-plated zinc die-cast metal housing with strain relief and cable fixing providing a 360-degree screen
    Accepted conductor diameter
    AWG 27/7 to 22/1 — stated in the second bullet. The window covers stranded and solid at once because the figure after each stroke is the conductor count. No millimetre figure is given for the conductor itself
    Accepted cable diameter
    5.0 to 9.0 mm — stated in the fourth bullet as the sheath diameters the plug will take. It is the widest of the three outside-diameter windows published on this shelf
    Load bar presence
    Not published on the listing — the second bullet describes a toolless termination with the conductors laid to a printed colour order, and names no separate lacing insert
    Pass-through or standard body
    Neither — the first and third bullets call it a field-terminated plug, assembled without tools for repair, maintenance or joining two installation cables. Nothing describes a crimp, and nothing describes conductors leaving the front
    Pack quantity
    Ten — stated in the title
    Amazon reference
    B0CX23DJ6R (same reference on 6 Amazon marketplaces)
    EAN
    4016032495116
    • Publishes both conductor constructions and both gauge ends in one notation
    • The sheath window is the widest here, and it is the dimension most plugs leave out
    • Ten plugs at this price is the dearest per end on the shelf after one outlier

    Best for: A repair or a joint on an existing run, where the plug has to go on in place and the cable might be either construction.

    ≈ $52 / £35 / 31 €
    Check price on Amazon

Others worth having spare

  • Elfcam pair of bidirectional 10G SFP+ transceivers with single SC optical ports

    Elfcam matched pair of bidirectional 10G SFP+, SC simplex, OS2, 20 km stated

    The dearest listing on this shelf and the only one that ships a complete link: two bidirectional modules with their wavelengths already reversed, on SC connectors where everything else here uses LC or RJ45.

    Module form factor
    SFP+ — stated in the title, supplied as one pair of two modules rather than as a single transceiver
    Module rate
    10 Gbps, 2.5 Gbps and 1.25 Gbps — three rates stated in the second bullet, with 10 Gb, 2,5 Gb and 1,25 Gb also named in the title
    Optical or copper medium
    Optical — the first and second bullets name a single-mode simplex SC fibre port of 9/125 µm
    Fibre type
    Single-mode, 9/125 µm — stated in the title and again in the first, second and fourth bullets. The grade is given as OS2 in the title and in the first and fourth bullets, which makes this one of only two optical modules on this shelf to name a grade at all
    Stated reach
    Up to 20 km — given in the first bullet as 20 KM and in the fourth as a transmission distance of up to 20 km with a single-mode simplex 9/125 µm OS2 SC cable
    Connector type
    SC simplex — stated in the title and in the first bullet. It is the only SC module on this shelf; the other six take LC or RJ45
    Wavelength
    TX 1270 nm with RX 1330 nm on one module and TX 1330 nm with RX 1270 nm on the other — stated in the first and second bullets. That reversal is what makes the pair a pair, and it is the reason the two modules are not interchangeable with each other
    Vendor coding stated
    Coded for Cisco SFP-10G-BXD-I and SFP-10G-BXU-I — the downstream and upstream halves named separately — with Ubiquiti Networks UF-SM-10G-S, Huawei, D-Link, Ruijie and open switches added in the third bullet, which prints Huawei twice
    Operating temperature range
    Not published on the listing — no range appears in any bullet. The fifth offers a warranty and a repair service centre in Paris in its place, and the sentence that should give the warranty length has no number in it: it reads as a warranty period of years, with the figure missing
    Amazon reference
    B0DBLFC335 (same reference on 6 Amazon marketplaces)
    EAN
    3701528726041
    • Two modules with the wavelengths already reversed, so a single-strand link is complete in one order
    • Names both halves of the Cisco bidirectional pair, downstream and upstream, by part number
    • The warranty sentence has a blank where its number should be

    Best for: A 20 km single-strand run on SC-terminated single-mode fibre, bought once with both ends of the link in the same box.

    ≈ $66 / £60 / 60 €
    Check price on Amazon
  • GIQITCK 10GBASE-T copper SFP+ transceiver with an RJ45 socket

    GIQITCK 10GBASE-T copper SFP+ to RJ45, 30 m stated, Realtek controller named

    The cheaper of the two copper ten-gigabit modules here, sold with an unusually specific compatibility bullet that excludes two Cisco series by name and a cable requirement stated twice in two incompatible ways.

    Module form factor
    SFP+, called a mini-GBIC in the title — the ten-gigabit cage. The third bullet says it belongs in a 10Gb SFP+ port and names fibre switches, routers, network cards and servers as its hosts
    Module rate
    10 Gbps — stated in the title as 10GBASE-T and in the second bullet, which says the module supports a 10 Gbps rate
    Optical or copper medium
    Copper — stated in the title and in the second bullet, which calls it a 10G copper module with a copper RJ-45 plug
    Fibre type
    Not published on the listing, and a copper module has no fibre to qualify. What the second bullet names in its place is the cable, and it names it twice: Cat 6A, Cat 7 or Cat 8 in one sentence, then Cat 5e or better in the next. Both statements are printed, neither is withdrawn
    Stated reach
    Up to 30 m — stated in the title. No shorter distance is quoted against a lesser cable, which is what would normally reconcile the two cable statements
    Connector type
    RJ45 — stated in the title and in the second bullet as a copper RJ-45 plug
    Wavelength
    Not published on the listing, and copper has none. The nearest the page comes is the first bullet, which names a Realtek controller as the newest chip and credits it with a performance improvement
    Vendor coding stated
    Coded for Cisco SFP-10G-T-S, with the Cisco Nexus and Cisco Meraki series excluded by name in the same bullet; also named are Ubiquiti UF-RJ45-10G, Ubiquiti Networks, Netgear AXM765, DEM-440XT, Mikrotik, Supermicro and other open switches
    Operating temperature range
    Not published on the listing — no working range appears in any bullet. The fifth says instead that every module was checked one after another on various switches before shipping, and the sixth offers a thirty-day return, a two-year warranty and lifetime technical support
    Amazon reference
    B0DLG7WG35 (same reference on 6 Amazon marketplaces)
    EAN
    0717325593611
    • Names two switch series it will not work in, which no other listing on this shelf does
    • Quotes Cisco, Ubiquiti and Netgear part numbers rather than brand names alone
    • Two different cable requirements sit one sentence apart and neither is withdrawn

    Best for: A ten-gigabit copper run of up to 30 m into a switch on the named list, and specifically not into a Nexus or a Meraki.

    ≈ $25 / 28 €
    Check price on Amazon
  • QSFPTEK gigabit SFP transceiver with a duplex LC optical port and a metal body

    QSFPTEK 1000BASE-LX/LH single-mode SFP, 1310 nm, 10 km stated, coded for three HP part numbers

    The cheapest module on this shelf and the only one that publishes how much light leaves it and how little can arrive at the far end, sold coded for three HP part numbers with a request to confirm the switch before ordering.

    Module form factor
    SFP, called a mini-GBIC in the title — the gigabit cage rather than the larger SFP+ one. The fifth bullet lists the other form factors the seller stocks, from GBIC and SFP through SFP BIDI, DWDM and CWDM to 10G XFP, 10G SFP+ and 40G and 100G transceivers
    Module rate
    1000 Mbit/s — stated in the second bullet, and carried by the 1000BASE-LX/LH designation printed in the title
    Optical or copper medium
    Optical — the second bullet names a single-mode duplex LC connector, and the first places the module in fibre switches, routers, network cards and servers with gigabit SFP ports
    Fibre type
    Single-mode — stated in the title and again in the second bullet. The grade is not published on the listing: no OS1 or OS2 designation appears anywhere, and the maker gives a wavelength and a distance in its place
    Stated reach
    Up to 10 km — stated in the title and repeated in the second bullet as a transmission distance
    Connector type
    Duplex LC — stated in the second bullet, so the link uses two strands, one in each direction
    Wavelength
    1310 nm — stated in the title and in the second bullet, with a transmit power between -9 and -3 dBm and a receive sensitivity below -22 dBm quoted alongside it
    Vendor coding stated
    Coded for HP J4859A, J4859C and J4859B — stated in the title and in the first bullet, which adds other open switches without naming them. The fifth bullet asks the buyer to confirm the switch model before ordering, which is a seller declaring a coding rather than a switch maker certifying one
    Operating temperature range
    0 to 70 °C — stated in the second bullet as the working temperature, alongside the two optical power figures
    Amazon reference
    B07QR9HGMZ (same reference on 5 Amazon marketplaces)
    EAN
    0767912359670
    • Publishes transmit power and receive sensitivity, which no other module on this shelf prints
    • Names three HP part numbers outright instead of claiming compatibility in general terms
    • The fibre grade is never written, so OS1 and OS2 are left for the buyer to settle

    Best for: A gigabit link between two buildings on single-mode fibre, into a switch whose published module list names one of the three HP part numbers quoted.

    ≈ £11 / 10 €
    Check price on Amazon

All RJ45 connectors