The Ring,retaining, cataloged under National Stock Number 5325-00-940-7397, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-940-7397 |
| Primary Part Number | 6771157 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Material Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| End Style | VERTEX OUTSIDE PERIPHERY |
| Material Document and Classification | FED STD NO. 66,AISI C1060 THRU C1095 FED STD SINGLE MATERIAL RESPONSE OR SAE 1060 THRU 1095 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.712 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Major Thickness | 0.076 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Inside Diameter | 0.560 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5325-00-940-7397 is a Ring,retaining, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-940-7397 has 2 manufacturer part numbers on file: 6771157 (Penn Power Group Llc Div Government Services Department), 6771157 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6771157: Material Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; End Style: VERTEX OUTSIDE PERIPHERY; Material Document and Classification: FED STD NO. 66,AISI C1060 THRU C1095 FED STD SINGLE MATERIAL RESPONSE OR SAE 1060 THRU 1095 ASSN STD SINGLE MATERIAL RESPONSE. 11 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.