Circular MIL Spec Connectors

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Backshell Clamps

Amphenol PCD Backshell Clamps help to tidy up the cable after termination and provide strain relief at the termination area. The clamps are offered in environmental and non-environmental options, as well as EMI/RFI. The components are available in black zinc nickel, adding to the existing finishes in olive drab gray cadmium, tin, or nickel with a variety of shell sizes 11 through 48. Amphenol PCD Backshell Clamps meet MIL-DTL-38999, MIL-DTL-26482 Series II, MIL-DTL-83723 Series I and II, MIL-DTL-24308, and MIL-DTL-83513.

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Types of Circular MIL Spec Connectors

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Part #

Circular MIL Spec Strain Reliefs & Adapters 39 Backshell Strain Relief Clamp

M85049/39S19N
Amphenol PCD
1: ¥5,416.5
73In Stock

Mfr. Part #
M85049/39S19N

Mouser Part #
523-85049/39S19N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 39 Backshell Strain Relief Clamp

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Datasheet

73In Stock

¥5,416.5

¥4,692.3

¥4,396.7

¥4,187.4

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Right Angle

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR R/A SL NIC SZ 25

M85049/39S25N
Amphenol PCD
1: ¥5,866.7
102In Stock

Mfr. Part #
M85049/39S25N

Mouser Part #
523-85049/39S25N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR R/A SL NIC SZ 25

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Datasheet

102In Stock

¥5,866.7

¥5,263.7

¥4,880

¥4,725.5

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Right Angle

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR R/A SL NIC SZ 9

M85049/39S9N
Amphenol PCD
1: ¥7,632.3
279In Stock

Mfr. Part #
M85049/39S9N

Mouser Part #
523-85049/39S9N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR R/A SL NIC SZ 9

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Datasheet

279In Stock

¥7,632.3

¥7,158.9

¥4,250.5

¥3,728.9

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Right Angle

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 12

M85049/49-2-12N
Amphenol PCD
1: ¥2,131.1
358In Stock
500Expected 12/1/2026

Mfr. Part #
M85049/49-2-12N

Mouser Part #
523-85049/49-2-12N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 12

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Datasheet

358In Stock

500Expected 12/1/2026

¥2,131.1

¥1,867

¥1,739.1

¥1,666

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 14

M85049/49-2-14N
Amphenol PCD
1: ¥2,262.3
702In Stock

Mfr. Part #
M85049/49-2-14N

Mouser Part #
523-85049/49-2-14N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 14

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Datasheet

702In Stock

¥2,262.3

¥1,958.3

¥1,890.2

¥1,769

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 18

M85049/49-2-18N
Amphenol PCD
1: ¥2,561.3
302In Stock
850On Order

Mfr. Part #
M85049/49-2-18N

Mouser Part #
523-85049/49-2-18N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 18

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Datasheet

302In Stock

850On Order

¥2,561.3

¥2,445

¥2,182.6

¥2,058

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 20

M85049/49-2-20N
Amphenol PCD
1: ¥2,851.9
243In Stock

Mfr. Part #
M85049/49-2-20N

Mouser Part #
523-85049/49-2-20N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 20

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Datasheet

243In Stock

¥2,851.9

¥2,509.8

¥2,350.3

¥2,239

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 08

M85049/49-2-8N
Amphenol PCD
1: ¥2,018.1
622In Stock

Mfr. Part #
M85049/49-2-8N

Mouser Part #
523-85049/49-2-8N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST NIC SIZE 08

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Datasheet

622In Stock

¥2,018.1

¥1,744.1

¥1,632.8

¥1,556.4

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR R/A SL NIC SZ 10

M85049/51S10N
Amphenol PCD
1: ¥4,542.8
95In Stock

Mfr. Part #
M85049/51S10N

Mouser Part #
523-85049/51S10N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR R/A SL NIC SZ 10

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Datasheet

95In Stock

¥4,542.8

¥4,155.8

¥3,802

¥3,596.1

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Right Angle

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 10 STRAIN RELIEF NICKEL

M85049/52-1-10N
Amphenol PCD
1: ¥1,973.3
909In Stock
2,035On Order

Mfr. Part #
M85049/52-1-10N

Mouser Part #
523-85049/52-1-10N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 10 STRAIN RELIEF NICKEL

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Datasheet

909In Stock

2,035On Order

¥1,973.3

¥1,838.7

¥1,627.8

¥1,554.7

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

M85049/52-1-12A
Amphenol PCD
1: ¥2,177.6
424In Stock
475Expected 10/6/2026

Mfr. Part #
M85049/52-1-12A

Mouser Part #
523-85049/52-1-12A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

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Datasheet

424In Stock

475Expected 10/6/2026

¥2,177.6

¥2,031.4

¥2,011.5

¥1,956.7

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 12 STRAIN RELIEF NICKEL

M85049/52-1-12N
Amphenol PCD
1: ¥1,968.3
1,103In Stock
1,315On Order

Mfr. Part #
M85049/52-1-12N

Mouser Part #
523-85049/52-1-12N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 12 STRAIN RELIEF NICKEL

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Datasheet

1,103In Stock

1,315On Order

¥1,968.3

¥1,847

¥1,778.9

¥1,702.5

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

M85049/52-1-14N
Amphenol PCD
1: ¥2,268.9
794In Stock
575Expected 10/7/2026

Mfr. Part #
M85049/52-1-14N

Mouser Part #
523-85049/52-1-14N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

Learn More

Datasheet

794In Stock

575Expected 10/7/2026

¥2,268.9

¥1,965

¥1,782.3

¥1,692.6

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 16 STRAIN RELIEF NICKEL

M85049/52-1-16N
Amphenol PCD
1: ¥2,263.9
446In Stock
1,100On Order

Mfr. Part #
M85049/52-1-16N

Mouser Part #
523-85049/52-1-16N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 16 STRAIN RELIEF NICKEL

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Datasheet

446In Stock

1,100On Order

¥2,263.9

¥2,011.5

¥1,885.2

¥1,795.5

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

M85049/52-1-18A
Amphenol PCD
1: ¥2,770.5
200In Stock

Mfr. Part #
M85049/52-1-18A

Mouser Part #
523-85049/52-1-18A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

Learn More

Datasheet

200In Stock

¥2,770.5

¥2,506.4

¥2,375.2

¥2,342

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 18 STRAIN RELIEF NICKEL

M85049/52-1-18N
Amphenol PCD
1: ¥2,792.1
245In Stock
500On Order

Mfr. Part #
M85049/52-1-18N

Mouser Part #
523-85049/52-1-18N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 18 STRAIN RELIEF NICKEL

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Datasheet

245In Stock

500On Order

¥2,792.1

¥2,790.5

¥2,287.2

¥2,172.6

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 20 STRAIN RELIEF NICKEL

M85049/52-1-20N
Amphenol PCD
1: ¥2,421.7
199In Stock
650On Order

Mfr. Part #
M85049/52-1-20N

Mouser Part #
523-85049/52-1-20N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 20 STRAIN RELIEF NICKEL

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Datasheet

199In Stock

650On Order

¥2,421.7

¥2,134.4

¥1,999.8

¥1,905.2

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 22 STRAIN RELIEF NICKEL

M85049/52-1-22N
Amphenol PCD
1: ¥2,755.6
276In Stock
650On Order

Mfr. Part #
M85049/52-1-22N

Mouser Part #
523-85049/52-1-22N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 22 STRAIN RELIEF NICKEL

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Datasheet

276In Stock

650On Order

¥2,755.6

¥2,371.9

¥2,257.3

¥2,225.7

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Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 24 STRAIN RELIEF NICKEL

M85049/52-1-24N
Amphenol PCD
1: ¥3,587.8
254In Stock
175Expected 10/28/2026

Mfr. Part #
M85049/52-1-24N

Mouser Part #
523-85049/52-1-24N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 24 STRAIN RELIEF NICKEL

Learn More

Datasheet

254In Stock

175Expected 10/28/2026

¥3,587.8

¥3,406.7

¥3,277.2

¥2,058

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 8 STRAIN RELIEF NICKEL

M85049/52-1-8N
Amphenol PCD
1: ¥1,999.8
1,561In Stock

Mfr. Part #
M85049/52-1-8N

Mouser Part #
523-85049/52-1-8N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 8 STRAIN RELIEF NICKEL

Learn More

Datasheet

1,561In Stock

¥1,999.8

¥1,778.9

¥1,679.3

¥1,659.3

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST SL NIC SIZE 10

M85049/52S10N
Amphenol PCD
1: ¥3,489.8
645In Stock

Mfr. Part #
M85049/52S10N

Mouser Part #
523-85049/52S10N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST SL NIC SIZE 10

Learn More

Datasheet

645In Stock

¥3,489.8

¥3,401.7

¥3,400.1

¥2,782.2

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

M85049/52S12N
Amphenol PCD
1: ¥3,165.9
124In Stock
100Expected 10/5/2026

Mfr. Part #
M85049/52S12N

Mouser Part #
523-85049/52S12N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

Learn More

Datasheet

124In Stock

100Expected 10/5/2026

¥3,165.9

¥2,936.6

¥2,840.3

¥2,649.3

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST SL BLACK SZ 16

M85049/52S16A
Amphenol PCD
1: ¥4,265.4
200In Stock

Mfr. Part #
M85049/52S16A

Mouser Part #
523-85049/52S16A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SR ST SL BLACK SZ 16

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Datasheet

200In Stock

¥4,265.4

¥3,657.5

¥3,433.3

¥3,267.2

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

M85049/52S20N
Amphenol PCD
1: ¥4,551.1
106In Stock
100Expected 10/7/2026

Mfr. Part #
M85049/52S20N

Mouser Part #
523-85049/52S20N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 52 Backshell Strain Relief Clamp

Learn More

Datasheet

106In Stock

100Expected 10/7/2026

¥4,551.1

¥4,504.6

¥4,013

¥3,523

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SHR BOOT ADPTR ST BLACK SZ 14

M85049/60-1A14
Amphenol PCD
1: ¥3,031.3
192In Stock
160On Order

Mfr. Part #
M85049/60-1A14

Mouser Part #
523-85049/60-1A14

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL SHR BOOT ADPTR ST BLACK SZ 14

Learn More

Datasheet

192In Stock

160On Order

¥3,031.3

¥2,576.2

¥2,511.4

¥2,474.9

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Min.: 1
Mult.: 1

Shrink Boot Adapters

MIL-DTL-5015, MIL-DTL-26482 II

Straight

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