The Washer,lock, cataloged under National Stock Number 5310-01-200-7806, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-200-7806 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Criticality Code Justification | ZZZY |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | QQ-N-286 K-MONEL CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.743 INCHES NOMINAL IN |
| Material Thickness | 0.172 INCHES NOMINAL IN |
| Material | NICKEL ALLOY OVERALL |
| Hole Diameter | 0.506 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 250-2144291 PC 5 | 3/1 Design control — primary reference U.S. Government activity |
| 250-2144291PC5 | 5/1 Secondary reference Naval Sea Systems Command |
| 77917-53X1 PC 5 | 5/1 Secondary reference U.S. Government activity |
| FF-W-84 CLG,1/2IN,STY 2 | 5/1 Secondary reference U.S. Government activity |
NSN 5310-01-200-7806 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-211-8236. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-200-7806: Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Criticality Code Justification: ZZZY; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: QQ-N-286 K-MONEL CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 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.