Signamax™ Unscreened High-Density MT-Series Keystone Jacks

Slim Profile Category 5E, 6, and 6A Keystone Jacks for Highly-Populated Patch Panels

Signamax MT Series Jacks

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Signamax™ Unscreened High-Density MT-Series Keystone Jacks

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  • Signamax MT Series Keystone Jack - icon
  • Signamax MT Series Keystone Jack back view - icon
  • Signamax MT Series Keystone Jack available colors - icon
  • Signamax 4-Pair Termination Tool - icon

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Low Price GuaranteeWhat's special about these unshielded keystone jacks?

  • Professional-grade, slim form keystone modules designed to meet the needs of high-bandwidth networking, while exceeding ANSI/TIA-568 requirements for Cat 5e, Cat6 and Cat 6a performance
  • Rear 110-type contacts offer easier termination for optimal cable management, while providing improved wire retention to ensure system performance and longevity
  • RoHS Compliant Supports both T568A and T568B wiring schemes, with each terminal clearly marked with easy-to-read color-coded labels for fast and error-free termination
  • Click for More Features

Signamax™ MT-Series Keystone jacks feature a slim profile housing ideal for high-density snap-in patch panels and faceplates. These keystone jacks are available in Cat5e, Cat6, and Cat6a styles with 9 available colors to choose from, offering network installers maximum performance and a greater range of flexibility when designing or upgrading their current networking infrastructures.

  • Each keystone is individually rated to withstand up to 750 plug insertions, to offer the highest level of reliability and system stability for fast-paced network environments
  • Specially engineered connector contacts provide enhanced plug-to-jack connection integrity, while protecting against damage caused by the insertion of 4- or 6-position plugs
  • Jacks can easily be terminated using any standard 110 single-position punch down tool, or with Signamax's Four Pair Termination Tool, which simultaneously terminates all eight conductors while trimming off the excess wire to save the installer on both time and labor
  • Keystone jacks are available in 9 different colors, to match preexisting hardware or create a unique color-coding system for easier installation of patch cables and maintenance
  • Each module is clearly labeled with the category performance above the jack, to avoid any confusion or mix-up during installation
  • UL 94V-0 fire rated
  • FCC rated
  • IEC and EN compliant
  • Exceeds ANSI/TIA/EIA specifications
  • RoHS compliant


ANSI/TIA-568-C.2: Meets or exceeds category 5E, 6, 6A (1–500 MHz) component specifications
Unscreened twisted pair (U/UTP)
8p8c (8-position, 8-contact) “RJ45” style
ANSI/TIA-568-C.2: T568A & T568B
ISO/IEC 11801/ 2nd Ed.: 8-position pin/pair assignment (1-2/3-6/4-5/7-8)
22-24 AWG (0.644–0.511 mm)
Insulation resistance: Min 500 M/Ohm @ 100 /Vdc
Dielectric withstanding voltage: 1,000 Vdc/ac peak contact-to-contact @ 60 /Hz for 1 min
Spring wire contact resistance: Max 20 mOhm
IDC contact /resistance: Max 2.5 mOhm
Housing: High-impact /thermoplastic, UL 94V-0 fire-retardant
Jack spring wire: Phosphor bronze alloy plated with 50 /μin of gold over 70–100 μin of nickel
IDC: 110 type, phosphor bronze alloy with 100-μin 100% tin (Sn) alloy
Total contact force: Min 800 g for 8 wire leads
Retention force: 50 N (11 lbf) for 60 ± 5 s
Mating cycle life: Min 750 cycles
Standard keystone footprint
D 30.80mm H 19.30mm W 16.90mm
D 1.213in H 0.760in W 0.665in
Storage: -40 °C – +70 °C (-40 °F – +158 °F)
Operation: -10 °C – +60 °C (+14 °F – +140 °F)
RH (operation): Max non-condensing 93%
ANSI/TIA-568-C.2, IEC 60603-7, FCC Part 68 Subpart F, UL 94V-0
X.21, V.11, S0, ISDN, CSMA/CD 10BASE-T, 100BASE-TX, 100BASE-T4, 100BASE-T2, 1000BASE-T, 10GBASE-T, TR 4/16/100, 100BASE-VG, ATM LAN 25/51/155, TP-PMD
5-year limited component warranty
10-year Signamax Link/Channel Warranty
15-year Signamax Extended Component Warranty
25-year Signamax Cabling System Warranty
SX-KJ458MT-C5E CAT 5E MT Series High-Density Keystone Jack Black, Blue, Green, Gray, Light Ivory, Orange, Red, White, Yellow 1.213"D x 0.760"H x 0.665"W
(30.80 x 19.30 x 16.90mm)
SX-KJ458MT-C6C CAT 6 MT Series High-Density Keystone Jack
SX-KJ458MT-C6AC CAT 6A MT Series High-Density Keystone Jack
SX-KJMT-8600 4-Pair Termination Tool for all MT Series Keystone Jacks 6.5"D x 5.9"H x 1.2"W

bulk cat6 cableBulk CAT 5e, CAT6 and CAT 6a Network Cable
From per 50FT
Marked by the foot for easy measurement, this bulk 4-pair Cat5e cable has 24 AWG solid copper conductors, high-density insulation, and a PVC jacket.

Black Box Cat6 and Cat6a Patch PanelsBlack Box Cat6 and Cat6a High Density Data Center Patch Cable (UTP)
Black Box Cat6 and Cat6a High Density Data Center Patch Cables (UTP) have the patent-pending push-pull boot design. This design makes it easy to insert and remove the cables in high-density data center applications, such as blade servers, patch panels, and switches.


FLUKE JackRapid punchdown toolFluke JackRapid™ Punch Down Tool
JackRapid allows you to terminate jacks eight times faster than traditional impact tools - with accuracy that's unmatched.  The patented jack termination tool seats and terminates all wires simultaneously

Signamax Patch PanelSIGNAMAX High-Density Field-Configurable Unloaded Patch Panels
Perfect for creating a new network or just upgrading a preexisting one, these ultra-compact patch panels allow installers to fit more connections into less rack space, and feature port identification for easy jack ID.

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