The Washer,flat, cataloged under National Stock Number 5310-00-576-8010, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-576-8010 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 0.438 INCHES NOMINAL IN |
| Hardness Rating | 10.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.203 INCHES NOMINAL IN |
| Thickness | 0.016 INCHES NOMINAL 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 |
|---|---|
| Q8H380-1 | 5/9 Secondary reference Bae Systems Technology Solutions & Services Inc. |
| Q8H380-1 | 5/9 Secondary reference General Dynamics Corp Convair Div Lindbergh Field Facility |
| Q8H380-1 | 3/9 Design control — primary reference Tracor Flight Systems Inc Sub of Tracor Inc |
| FF-W-92B | 4/1 Identification reference U.S. Government activity |
| AMS-QQ-P-416B | 5/9 Secondary reference U.S. Government activity |
| AMS-QQ-P-416B | 5/1 Secondary reference Sae International Dba Sae International |
| Q8H380-1 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
NSN 5310-00-576-8010 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-576-8010: Overall Diameter: 0.438 INCHES NOMINAL IN; Hardness Rating: 10.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM; Material Document and Classification: MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.