The Washer,lock, cataloged under National Stock Number 5310-01-389-7002, 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8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-389-7002 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Style Designator | FLAT INTERNAL TEETH |
| Outside Diameter | 0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| Material Thickness | 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN |
| Departure From Cited Document | AS MODIFIED BY MATERIAL |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 316 OVERALL |
| Hole Diameter | 0.168 INCHES MINIMUM AND 0.176 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 |
|---|---|
| AA55609-155 | 5/9 Secondary reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| MS35333-155 CRE S 316 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| MS35333-155 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-389-7002 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-563-8714. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-389-7002: Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN; Material Thickness: 0.018 INCHES MINIMUM AND 0.023 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.