The Ring,retaining, cataloged under National Stock Number 5325-00-904-9756, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Aar Supply Chain, Inc Dba Aar Defense Systems & Logistics. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-904-9756 |
| Primary Part Number | 26512-18 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Aar Supply Chain, Inc Dba Aar Defense Systems & Logistics |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| End Style | VERTEX CENTER OR ABOVE |
| Material Diameter | 0.032 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.162 INCHES NOMINAL IN |
| Inside Diameter | 0.098 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 26512-18 | Aar Supply Chain, Inc Dba Aar Defense Systems & Logistics (USA) |
| 6403653 | General Motors Corp (USA) |
| 3900-021 | Woodward, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 26512-18 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
| 6403653 | 3/9 Design control — primary reference General Motors Llc Dba General Motors |
| 6403653 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 5325-00-904-9756 is a Ring,retaining, manufactured by Aar Supply Chain, Inc Dba Aar Defense Systems & Logistics, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-904-9756 has 3 manufacturer part numbers on file: 26512-18 (Aar Supply Chain, Inc Dba Aar Defense Systems & Logistics), 6403653 (General Motors Corp), 3900-021 (Woodward, Inc.).
Key specifications for 26512-18: Usage Design: EXTERNAL; End Style: VERTEX CENTER OR ABOVE; Material Diameter: 0.032 INCHES NOMINAL IN; Cross-Sectional Shape Style: ROUND. 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.