The Washer,key, cataloged under National Stock Number 5310-00-526-5539, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-526-5539 |
| Primary Part Number | 5265539 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Internal Straight Key Width | 0.174 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.063 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Criticality Code Justification | AAUB AND ABKV AND ABLQ |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.169 INCHES MINIMUM AND 2.174 INCHES MAXIMUM IN |
| Material Thickness | 0.120 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1020 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.781 INCHES MINIMUM AND 0.786 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 5265539 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| H17269 | 5/9 Secondary reference Diebold, Incorporated Div Diebold Electronic Security |
NSN 5310-00-526-5539 is a Washer,key, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-526-5539 has 1 manufacturer part number on file: 5265539 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 5265539: Internal Straight Key Width: 0.174 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.063 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Criticality Code Justification: AAUB AND ABKV AND ABLQ. 12 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.