The Washer,lock, cataloged under National Stock Number 5310-00-018-0322, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-018-0322 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | FLAT INTERNAL TEETH |
| Material Document and Classification | -QQ-S-633 CANC FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.590 INCHES MINIMUM AND 0.607 INCHES MAXIMUM IN |
| Material Thickness | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | A TYPE |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Material | STEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL |
| Hole Diameter | 0.320 INCHES MINIMUM AND 0.332 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 |
|---|---|
| BEAX3B1 | 5/9 Secondary reference CAGE 00000 |
| 70X514 | 3/2 Design control — primary reference U.S. Government activity |
| MILW6986TYPEA | 4/1 Identification reference U.S. Government activity |
| 180322 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 180322 | 5/9 Secondary reference General Motors Corp |
NSN 5310-00-018-0322 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5365-01-158-7807, 5360-01-371-3371, 5360-01-395-4634. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-018-0322: Style Designator: FLAT INTERNAL TEETH; Material Document and Classification: -QQ-S-633 CANC FED SPEC ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.590 INCHES MINIMUM AND 0.607 INCHES MAXIMUM IN; Material Thickness: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN. 8 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.