The Washer,lock, cataloged under National Stock Number 5310-00-515-9962, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-515-9962 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.487 INCHES MAXIMUM IN |
| Material Thickness | 0.062 INCHES MINIMUM IN |
| Material | STEEL COMP 1060 OR STEEL COMP 1065 OVERALL |
| Hole Diameter | 0.252 INCHES MINIMUM AND 0.260 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 | X |
| Reference | Meaning |
|---|---|
| FF-W-84 | 5/9 Secondary reference U.S. Government activity |
| B18.21.1 | 5/9 Secondary reference U.S. Government activity |
| B18.21.1 1/4 IN. | C/1 Advisory reference — outside the item-of-supply concept The American Society of Mechanical Engineers |
| FFW84CLASSASTYLE21-4INWASHERL0CK | 5/9 Secondary reference U.S. Government activity |
| 772-116 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| FF-W-84 CLAST2 | 5/9 Secondary reference U.S. Government activity |
| ASME-B18.21.1 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 5310-00-515-9962 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-576-7612, 5310-00-637-9541. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-515-9962: Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.487 INCHES MAXIMUM IN. 7 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.