The Ring,retaining, cataloged under National Stock Number 5325-00-776-8100, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-776-8100 |
| Primary Part Number | 7768100 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Material Hardness Rating | 42.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| Material Document and Classification | ASTM A108, COMP 1035 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 5.315 INCHES MINIMUM AND 5.325 INCHES MAXIMUM IN |
| Major Thickness | 0.107 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN |
| Inside Diameter | 4.565 INCHES MINIMUM AND 4.575 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL STEPPED |
| Material | STEEL COMP 1035 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5325-00-776-8100 is a Ring,retaining, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-776-8100 has 2 manufacturer part numbers on file: 7768100 (U S Army Tank Automotive Command Amsta-Im-Mm), 8892828 (General Motors Corp).
Key specifications for 7768100: Material Hardness Rating: 42.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Material Document and Classification: ASTM A108, COMP 1035 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.