Circular MIL Spec Backshells

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Single Arm Composite Backshells

SUNBANK Single Arm Composite Backshells are designed to mate with MIL-DTL-38999 I, II, III, and IV connectors and incorporate self-locking coupling. The self-locking feature of these SUNBANK backshells withstands high vibrations. Single Arm Backshells comprise lightweight, aerospace-grade composite materials up to 40% lighter than aluminum. The backshells are available with electroless nickel plating, meeting the requirements of AS85049 and RoHS/REACH compliance. A Ground Lug option allows soldering directly to the body.

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Part #

Circular MIL Spec Backshells Natural Straight Adapter Assembly

09F7S721XB17
Sunbank / Souriau
1: $81.83
3In Stock

Mfr. Part No.
09F7S721XB17

Mouser Part No
649-09F7S721XB17

Sunbank / Souriau

Circular MIL Spec Backshells Natural Straight Adapter Assembly

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Datasheet

3In Stock

$81.83

$72.74

$69.94

$67.60

$63.87

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Plated Straight Adapter Assembly

09F7S721XN17G
Sunbank / Souriau
1: $378.68
22In Stock

Mfr. Part No.
09F7S721XN17G

Mouser Part No
649-09F7S721XN17G

Sunbank / Souriau

Circular MIL Spec Backshells Plated Straight Adapter Assembly

Learn More

Datasheet

22In Stock

$378.68

$344.45

$332.10

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

09F7R721XN15G
Sunbank / Souriau
1: $199.28
24In Stock

Mfr. Part No.
09F7R721XN15G

Mouser Part No
649-09F7R721XN15G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

Learn More

Datasheet

24In Stock

$199.28

$172.06

$165.89

$164.64

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

09F7R721XN17G
Sunbank / Souriau
1: $379.15
23In Stock

Mfr. Part No.
09F7R721XN17G

Mouser Part No
649-09F7R721XN17G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

Learn More

Datasheet

23In Stock

$379.15

$344.87

$332.50

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

09F7R721XN11G
Sunbank / Souriau
1: $375.67
24In Stock

Mfr. Part No.
09F7R721XN11G

Mouser Part No
649-09F7R721XN11G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

Learn More

Datasheet

24In Stock

$375.67

$341.71

$329.46

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Black Straight Adapter Assembly

09F7S721XM13
Sunbank / Souriau
1: $119.55
22In Stock

Mfr. Part No.
09F7S721XM13

Mouser Part No
649-09F7S721XM13

Sunbank / Souriau

Circular MIL Spec Backshells Black Straight Adapter Assembly

Learn More

Datasheet

22In Stock

$119.55

$109.02

$104.83

$101.33

$95.73

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Plated Straight Adapter Assembly

09F7S721XN11G
Sunbank / Souriau
1: $378.76
24In Stock

Mfr. Part No.
09F7S721XN11G

Mouser Part No
649-09F7S721XN11G

Sunbank / Souriau

Circular MIL Spec Backshells Plated Straight Adapter Assembly

Learn More

Datasheet

24In Stock

$378.76

$344.52

$332.16

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Black 90degree Adapter Assembly

09F7R721XM11
Sunbank / Souriau
1: $82.46
22In Stock
Factory Special Order

Mfr. Part No.
09F7R721XM11

Mouser Part No
649-09F7R721XM11

Factory Special Order

Sunbank / Souriau

Circular MIL Spec Backshells Black 90degree Adapter Assembly

Learn More

Datasheet

22In Stock

$82.46

$73.41

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Black 90degree Adapter Assembly

09F7R721XM13
Sunbank / Souriau
1: $85.79
22In Stock
Factory Special Order

Mfr. Part No.
09F7R721XM13

Mouser Part No
649-09F7R721XM13

Factory Special Order

Sunbank / Souriau

Circular MIL Spec Backshells Black 90degree Adapter Assembly

Learn More

Datasheet

22In Stock

$85.79

$76.31

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Black 90degree Adapter Assembly

09F7R721XM23
Sunbank / Souriau
1: $99.62
25In Stock
Factory Special Order

Mfr. Part No.
09F7R721XM23

Mouser Part No
649-09F7R721XM23

Factory Special Order

Sunbank / Souriau

Circular MIL Spec Backshells Black 90degree Adapter Assembly

Learn More

Datasheet

25In Stock

$99.62

$90.85

$90.39

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Black 90degree Adapter Assembly

09F7R721XM15
Sunbank / Souriau
1: $71.31
22In Stock
Factory Special Order

Mfr. Part No.
09F7R721XM15

Mouser Part No
649-09F7R721XM15

Factory Special Order

Sunbank / Souriau

Circular MIL Spec Backshells Black 90degree Adapter Assembly

Learn More

Datasheet

22In Stock

$71.31

$63.69

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Black Straight Adapter Assembly

09F7S721XM17
Sunbank / Souriau
1: $140.61
45Expected 25/09/2026

Mfr. Part No.
09F7S721XM17

Mouser Part No
649-09F7S721XM17

Sunbank / Souriau

Circular MIL Spec Backshells Black Straight Adapter Assembly

Learn More

Datasheet

45Expected 25/09/2026

$140.61

$129.05

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Black 45degree Adapter Assembly

09F7A721XM11
Sunbank / Souriau
50: $95.51
Non-Stocked

Mfr. Part No.
09F7A721XM11

Mouser Part No
649-09F7A721XM11

Sunbank / Souriau

Circular MIL Spec Backshells Black 45degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$95.51

$90.24

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

09F7A721XN11G
Sunbank / Souriau
50: $329.35
Non-Stocked

Mfr. Part No.
09F7A721XN11G

Mouser Part No
649-09F7A721XN11G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$329.35

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

09F7A721XN13G
Sunbank / Souriau
50: $160.60
Non-Stocked

Mfr. Part No.
09F7A721XN13G

Mouser Part No
649-09F7A721XN13G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$160.60

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

09F7A721XN15G
Sunbank / Souriau
50: $108.90
Non-Stocked

Mfr. Part No.
09F7A721XN15G

Mouser Part No
649-09F7A721XN15G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$108.90

$102.89

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

09F7A721XN17G
Sunbank / Souriau
50: $332.50
Non-Stocked

Mfr. Part No.
09F7A721XN17G

Mouser Part No
649-09F7A721XN17G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$332.50

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

09F7A721XN19G
Sunbank / Souriau
50: $145.22
Non-Stocked

Mfr. Part No.
09F7A721XN19G

Mouser Part No
649-09F7A721XN19G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$145.22

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

09F7A721XN25G
Sunbank / Souriau
50: $335.21
Non-Stocked

Mfr. Part No.
09F7A721XN25G

Mouser Part No
649-09F7A721XN25G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 45 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$335.21

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

09F7R721XN13G
Sunbank / Souriau
50: $160.60
Non-Stocked

Mfr. Part No.
09F7R721XN13G

Mouser Part No
649-09F7R721XN13G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$160.60

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

09F7R721XN21G
Sunbank / Souriau
50: $85.22
Non-Stocked

Mfr. Part No.
09F7R721XN21G

Mouser Part No
649-09F7R721XN21G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$85.22

$80.52

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

09F7R721XN23G
Sunbank / Souriau
50: $179.23
Non-Stocked

Mfr. Part No.
09F7R721XN23G

Mouser Part No
649-09F7R721XN23G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$179.23

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

09F7R721XN25G
Sunbank / Souriau
50: $335.21
Non-Stocked

Mfr. Part No.
09F7R721XN25G

Mouser Part No
649-09F7R721XN25G

Sunbank / Souriau

Circular MIL Spec Backshells Plated 90 degree Adapter Assembly

Learn More

Datasheet

Non-Stocked

$335.21

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated Straight Adapter Assembly

09F7S721XN13G
Sunbank / Souriau
50: $162.51
Non-Stocked

Mfr. Part No.
09F7S721XN13G

Mouser Part No
649-09F7S721XN13G

Sunbank / Souriau

Circular MIL Spec Backshells Plated Straight Adapter Assembly

Learn More

Datasheet

Non-Stocked

$162.51

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Circular MIL Spec Backshells Plated Straight Adapter Assembly

09F7S721XN15G
Sunbank / Souriau
50: $166.36
Non-Stocked

Mfr. Part No.
09F7S721XN15G

Mouser Part No
649-09F7S721XN15G

Sunbank / Souriau

Circular MIL Spec Backshells Plated Straight Adapter Assembly

Learn More

Datasheet

Non-Stocked

$166.36

Min.: 50
Mult.: 50

MIL-DTL-38999 III, IV

Band Lock Adapters

Nickel

Thermoplastic (TP)

Single Arm Composite Backshells

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