The Washer,flat, cataloged under National Stock Number 5310-00-441-9773, 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11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-441-9773 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN |
| Length | 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | QQ-S-636-CANC FED SPEC 1ST MATERIAL RESPONSE AND MIL-S-7952 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-7952 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Peripheral Shape Style | RECTANGULAR |
| Material | STEEL OR STEEL COMP 1025 OR STEEL COMP 1010 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN |
| Thickness | 0.090 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 |
|---|---|
| 1019120-001 | 5/9 Secondary reference Anacomp, Inc. |
| 1019120-001 | C/1 Advisory reference — outside the item-of-supply concept Lexel Imaging Systems Inc |
| NAS1401-7-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-441-9773 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-504-0775. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-441-9773: Width Across Flats: 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN; Length: 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-S-636-CANC FED SPEC 1ST MATERIAL RESPONSE AND MIL-S-7952 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-7952 MIL SPEC 3RD 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.