The Washer,lock, cataloged under National Stock Number 5310-01-057-3769, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-057-3769 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Heat Treatment | COLD DRAWN AND COLD DRAWN AND AGE HARDENINGAGE HARDENING |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM40.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | QQ-N-286,CL A,FM 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.550 INCHES MAXIMUM0.550 INCHES MAXIMUM IN |
| Material Thickness | 0.125 INCHES MINIMUM0.125 INCHES MINIMUM IN |
| Departure From Cited Document | AS MODIFIED BY MATERIAL |
| Nondefinitive Spec/std Data | G CLASS |
| Minimum Tensile Strength | 155000 POUNDS PER SQUARE INCH155000 POUNDS PER SQUARE INCH LBS |
| Material | NICKEL ALLOY OVERALL |
| Hole Diameter | 0.377 INCHES MINIMUM AND 0.377 INCHES MINIMUM AND 0.385 INCHES MAXIMUM0.385 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 |
|---|---|
| 4398602-A-107 | 5/9 Secondary reference Naval Ship Engineering Center Philadelphia Division Submarine Antenna Quality Assurance |
| FF-W-84 | 4/1 Identification reference U.S. Government activity |
| MS51848-12MONEL | 4/1 Identification reference U.S. Government activity |
| SS-585-4398602 ITEM 107 | 3/9 Design control — primary reference Naval Ship Engineering Center Philadelphia Division Submarine Antenna Quality Assurance |
| 4398602-A-107 | 5/9 Secondary reference Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-057-3769 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-057-3769: Heat Treatment: COLD DRAWN AND COLD DRAWN AND AGE HARDENINGAGE HARDENING; Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM40.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: QQ-N-286,CL A,FM 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 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.