D-Sub Backshells – Mouser United Kingdom

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X3 Precision-Machine One-Piece Threaded Backshells

Positronic X3 Precision-Machined One-Piece Threaded Backshells are designed for use with D-Sub connectors and circular M38999/AS85049 backshell accessories. These backshells deliver robust mechanical integrity and continuous 360° EMI shielding. The X3 threaded backshells are compatible with machined and stamped shells for standard, high, and mixed-density D-Sub connectors, including the Mach-D series. These backshells are available in six shell sizes with both standard and low-profile configurations. The X3 threaded backshells are housed in aluminum or stainless steel with multiple plating options and can be specified with fixed or rotating jackscrews. These backshells operate at -55°C to 125°C temperature range and are ideal for military, aero, spaceflight, and industrial applications.

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Part #

D-Sub Backshells 104Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D104000X3PLE0/AA
Amphenol Positronic
1: £425.01
10Expected 24/08/2026
New Product

Mfr. Part No.
D104000X3PLE0/AA

Mouser Part No
276-D104000X3PLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 104Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£425.01

£362.62

£356.16

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

104 Position

D-Sub Backshells 104Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D104000X3PLT20/AA
Amphenol Positronic
1: £423.84
10Expected 24/08/2026
New Product

Mfr. Part No.
D104000X3PLT20/AA

Mouser Part No
276-D104000X3PLT20AA

New Product

Amphenol Positronic

D-Sub Backshells 104Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£423.84

£361.62

£355.17

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

104 Position

D-Sub Backshells 104Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D104000X3WLE0/AA
Amphenol Positronic
1: £402.07
10Expected 24/08/2026
New Product

Mfr. Part No.
D104000X3WLE0/AA

Mouser Part No
276-D104000X3WLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 104Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£402.07

£341.82

£333.77

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

104 Position

D-Sub Backshells 104Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D104000X3WLT20/AA
Amphenol Positronic
1: £400.86
10Expected 24/08/2026
New Product

Mfr. Part No.
D104000X3WLT20/AA

Mouser Part No
276-D104000X3WLT20AA

New Product

Amphenol Positronic

D-Sub Backshells 104Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£400.86

£340.80

£332.78

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

104 Position

D-Sub Backshells 15Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D15000X3PLE0/AA
Amphenol Positronic
1: £346.83
10Expected 24/08/2026
New Product

Mfr. Part No.
D15000X3PLE0/AA

Mouser Part No
276-D15000X3PLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 15Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£346.83

£294.86

£287.96

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

15 Position

D-Sub Backshells 15Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D15000X3PLT20/AA
Amphenol Positronic
1: £345.62
10Expected 24/08/2026
New Product

Mfr. Part No.
D15000X3PLT20/AA

Mouser Part No
276-D15000X3PLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 15Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£345.62

£293.83

£286.96

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

15 Position

D-Sub Backshells 15Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D15000X3WLE0/AA
Amphenol Positronic
1: £322.59
10Expected 24/08/2026
New Product

Mfr. Part No.
D15000X3WLE0/AA

Mouser Part No
276-D15000X3WLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 15Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£322.59

£274.25

£261.14

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

15 Position

D-Sub Backshells 15Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D15000X3WLT20/AA
Amphenol Positronic
1: £321.37
10Expected 24/08/2026
New Product

Mfr. Part No.
D15000X3WLT20/AA

Mouser Part No
276-D15000X3WLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 15Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£321.37

£273.21

£260.11

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

15 Position

D-Sub Backshells 25Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D25000X3PLE0/AA
Amphenol Positronic
1: £368.26
10Expected 24/08/2026
New Product

Mfr. Part No.
D25000X3PLE0/AA

Mouser Part No
276-D25000X3PLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 25Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£368.26

£313.08

£305.73

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

25 Position

D-Sub Backshells 25Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D25000X3PLT20/AA
Amphenol Positronic
1: £367.05
10Expected 24/08/2026
New Product

Mfr. Part No.
D25000X3PLT20/AA

Mouser Part No
276-D25000X3PLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 25Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£367.05

£312.05

£304.73

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

25 Position

D-Sub Backshells 25Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D25000X3WLE0/AA
Amphenol Positronic
1: £342.49
10Expected 24/08/2026
New Product

Mfr. Part No.
D25000X3WLE0/AA

Mouser Part No
276-D25000X3WLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 25Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£342.49

£291.17

£284.36

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

25 Position

D-Sub Backshells 25Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D25000X3WLT20/AA
Amphenol Positronic
1: £341.27
10Expected 24/08/2026
New Product

Mfr. Part No.
D25000X3WLT20/AA

Mouser Part No
276-D25000X3WLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 25Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£341.27

£290.14

£283.35

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

25 Position

D-Sub Backshells 37Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D37000X3PLE0/AA
Amphenol Positronic
1: £389.73
10Expected 24/08/2026
New Product

Mfr. Part No.
D37000X3PLE0/AA

Mouser Part No
276-D37000X3PLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 37Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£389.73

£331.34

£323.54

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

37 Position

D-Sub Backshells 37Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D37000X3PLT20/AA
Amphenol Positronic
1: £388.54
10Expected 24/08/2026
New Product

Mfr. Part No.
D37000X3PLT20/AA

Mouser Part No
276-D37000X3PLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 37Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£388.54

£330.32

£322.55

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

37 Position

D-Sub Backshells 37Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D37000X3WLE0/AA
Amphenol Positronic
1: £362.44
10Expected 24/08/2026
New Product

Mfr. Part No.
D37000X3WLE0/AA

Mouser Part No
276-D37000X3WLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 37Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£362.44

£308.13

£300.91

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

37 Position

D-Sub Backshells 37Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D37000X3WLT20/AA
Amphenol Positronic
1: £361.23
10Expected 24/08/2026
New Product

Mfr. Part No.
D37000X3WLT20/AA

Mouser Part No
276-D37000X3WLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 37Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£361.23

£307.10

£299.90

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

37 Position

D-Sub Backshells 50Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D50000X3PLE0/AA
Amphenol Positronic
1: £411.10
10Expected 24/08/2026
New Product

Mfr. Part No.
D50000X3PLE0/AA

Mouser Part No
276-D50000X3PLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 50Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£411.10

£349.50

£341.26

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

50 Position

D-Sub Backshells 50Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D50000X3PLT20/AA
Amphenol Positronic
1: £409.90
10Expected 09/09/2026
New Product

Mfr. Part No.
D50000X3PLT20/AA

Mouser Part No
276-D50000X3PLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 50Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 09/09/2026

£409.90

£348.48

£340.26

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

50 Position

D-Sub Backshells 50Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D50000X3WLE0/AA
Amphenol Positronic
1: £382.28
10Expected 24/08/2026
New Product

Mfr. Part No.
D50000X3WLE0/AA

Mouser Part No
276-D50000X3WLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 50Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£382.28

£324.99

£317.35

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

50 Position

D-Sub Backshells 50Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D50000X3WLT20/AA
Amphenol Positronic
1: £381.06
10Expected 24/08/2026
New Product

Mfr. Part No.
D50000X3WLT20/AA

Mouser Part No
276-D50000X3WLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 50Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£381.06

£323.97

£316.36

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

50 Position

D-Sub Backshells 9Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D9000X3PLE0/AA
Amphenol Positronic
1: £325.32
10Expected 24/08/2026
New Product

Mfr. Part No.
D9000X3PLE0/AA

Mouser Part No
276-D9000X3PLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 9Backshell, Top Entry, Threaded, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£325.32

£276.58

£263.45

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

9 Position

D-Sub Backshells 9Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D9000X3PLT20/AA
Amphenol Positronic
1: £324.10
10Expected 24/08/2026
New Product

Mfr. Part No.
D9000X3PLT20/AA

Mouser Part No
276-D9000X3PLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 9Backshell, Top Entry, Threaded, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£324.10

£275.54

£262.42

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

9 Position

D-Sub Backshells 9Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

D9000X3WLE0/AA
Amphenol Positronic
1: £302.60
10Expected 24/08/2026
New Product

Mfr. Part No.
D9000X3WLE0/AA

Mouser Part No
276-D9000X3WLE0/AA

New Product

Amphenol Positronic

D-Sub Backshells 9Backshell, Top Entry, Threaded, Low Profile, Rotating Male Jackscrew, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£302.60

£257.26

£244.25

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

9 Position

D-Sub Backshells 9Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

D9000X3WLT20/AA
Amphenol Positronic
1: £301.39
10Expected 24/08/2026
New Product

Mfr. Part No.
D9000X3WLT20/AA

Mouser Part No
276-D9000X3WLT20/AA

New Product

Amphenol Positronic

D-Sub Backshells 9Backshell, Top Entry, Threaded, Low Profile, Fixed Female Jackpost, Conductive Electroless Nickel Finish

Learn More

Datasheet

10Expected 24/08/2026

£301.39

£256.22

£243.23

Min.: 1
Mult.: 1

D-Sub Backshell

Straight

1 Entry

Aluminum

Nickel

9 Position

X3 Precision-Machine One-Piece Threaded Backshells

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