Hardware

Back-up rings

Back-up rings for aviation maintenance and overhaul sourcing. Search by manufacturer part number or NSN. Listings are PartsPerk-owned observations for review — not live inventory or airworthiness approval.

Search PN / NSN Request sourcing

63 owned part identities in this path

Parts in this category

63 PartsPerk-owned part identities in this path.

Grid Table

All manufacturers AIRBUS Boeing Military Standard

MS16624-3031
Military Standard MS16624-3031 Steel Ring, Retaining
Military Standard
SKU SGP133092
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-803-7313
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-3043
Military Standard MS16624-3043 Steel Ring, Retaining - 10/Pack
Military Standard
SKU SGP32799-X10
Observed pack 10/Pack · sale increment 1
NSN 5365-00-753-3929
- Country of Origin: United States
- Observed pack description: Pack - (Pack = 10 ea)
- Observed unit of measure: 10/Pack
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MS16624-3050
Military Standard MS16624-3050 Steel Ring, Retaining
Military Standard
SKU SGP183189
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-3056
Military Standard MS16624-3056 Steel Ring, Retaining
Military Standard
SKU SGP165823
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-3078
Military Standard MS16624-3078 Steel Ring, Retaining - 100/Pack
Military Standard
SKU SGP133094-X100
Observed pack 100/Pack · sale increment 1
NSN 5325-01-580-6137
- Country of Origin: United States
- Observed pack description: Pack - (Pack = 100 ea)
- Observed unit of measure: 100/Pack
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MS16624-37
Military Standard MS16624-37 Steel Ring, Retaining
Military Standard
SKU SGP133095
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-715-1152
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4025
Military Standard MS16624-4025 Steel Ring, Retaining - 15/Pack
Military Standard
SKU SGP133096-X15
Observed pack 15/Pack · sale increment 1
NSN 5325-01-127-1807
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Pack - (Pack = 15 ea)
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MS16624-4028
Military Standard MS16624-4028 Steel Ring, Retaining
Military Standard
SKU SGP133097
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-910-9516
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4031
Military Standard MS16624-4031 Steel Ring, Retaining
Military Standard
SKU SGP133098
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-263-5915
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-4034
Military Standard MS16624-4034 Steel Ring, Retaining
Military Standard
SKU SGP133099
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-550-5936
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4035
Military Standard MS16624-4035 Steel Ring, Retaining
Military Standard
SKU SGP133100
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-804-7642
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4037
Military Standard MS16624-4037 Steel Ring, Retaining
Military Standard
SKU SGP133101
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-01-203-5612
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-4039
Military Standard MS16624-4039 Steel Ring, Retaining
Military Standard
SKU SGP133102
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-804-7701
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4040
Military Standard MS16624-4040 Steel Ring, Retaining
Military Standard
SKU SGP133103
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-804-7643
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4043
Military Standard MS16624-4043 Steel Ring, Retaining - 20/Pack
Military Standard
SKU SGP133104-X20
Observed pack 20/Pack · sale increment 1
NSN 5325-00-818-0872
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Pack - (Pack = 20 ea)
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MS16624-4046
Military Standard MS16624-4046 Steel Ring, Retaining
Military Standard
SKU SGP165826
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4050
Military Standard MS16624-4050 Steel Ring, Retaining - 30/Pack
Military Standard
SKU SGP133105-X30
Observed pack 30/Pack · sale increment 1
NSN 5325-00-804-7645
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Pack - (Pack = 30 ea)
Open compare View part RFQ
MS16624-4056
Military Standard MS16624-4056 Steel Ring, Retaining
Military Standard
SKU SGP133106
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-804-7646
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4062
Military Standard MS16624-4062 Steel Ring, Retaining
Military Standard
SKU SGP133107
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-753-3699
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4066
Military Standard MS16624-4066 Steel Ring, Retaining
Military Standard
SKU SGP133108
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-634-7446
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-4075
Military Standard MS16624-4075 Steel Ring, Retaining
Military Standard
SKU SGP133109
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-808-7913
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-4087
Military Standard MS16624-4087 Steel Ring, Retaining - 20/Pack
Military Standard
SKU SGP133110-X20
Observed pack 20/Pack · sale increment 1
NSN 5325-00-514-0393
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Pack - (Pack = 20 ea)
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MS16624-4093
Military Standard MS16624-4093 Steel Ring, Retaining
Military Standard
SKU SGP133111
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-804-2184
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-4098
Military Standard MS16624-4098 Steel Ring, Retaining - 30/Pack
Military Standard
SKU SGP133112-X30
Observed pack 30/Pack · sale increment 1
NSN 5325-00-807-8151
- Country of Origin: United States
- Observed pack description: Pack - (Pack = 30 ea)
- Observed unit of measure: 30/Pack
Open compare View part RFQ

Related hardware

Frequently asked questions

How do I pick the correct part?

Start with the manufacturer part number from the illustrated parts catalog or maintenance manual. If an NSN is listed, search that next. Confirm finish, dash number, and engine or airframe applicability before opening an RFQ.

Are these listings in stock or certified?

No. Category pages show PartsPerk-owned observations for sourcing review. Stock, price, trace, and airworthiness stay off the page until a separate publication review.

Can fleet and shop orders be reviewed together?

Yes. Submit quantity, required documents, and need-by date through the sourcing desk. Volume review is human — these pages do not auto-discount.

PartsPerk catalog pages show PartsPerk-owned observations only. They are not live stock, not certification, and not OEM affiliation. Exact PN/NSN identity is for sourcing review; publication and sellability require separate approval.

Back-up rings

Parts in this category

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