The Washer,flat, cataloged under National Stock Number 5310-00-044-6165, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Stewart-Warner Corporation. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-044-6165 |
| Primary Part Number | 64460 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Stewart-Warner Corporation |
| Status | ACTIVE |
| Overall Diameter | 0.438 INCHES NOMINAL IN |
| Material Document and Classification | QQ-B-611,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.219 INCHES NOMINAL IN |
| Thickness | 0.049 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 |
| Part Number | Manufacturer |
|---|---|
| 64460 | Stewart-Warner Corporation (USA) |
| Reference | Meaning |
|---|---|
| 446165 | 3/9 Design control — primary reference General Motors Corp |
| 446165 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 5310-00-044-6165 is a Washer,flat, manufactured by Stewart-Warner Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-044-6165 has 1 manufacturer part number on file: 64460 (Stewart-Warner Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 6240-01-344-9557, 5935-01-365-1791. Verify interchangeability with system specifications before substitution.
Key specifications for 64460: Overall Diameter: 0.438 INCHES NOMINAL IN; Material Document and Classification: QQ-B-611,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 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.