The Washer,flat, cataloged under National Stock Number 5310-00-044-6257, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Borgwarner Pds (anderson), L.l.c.. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-044-6257 |
| Primary Part Number | 1948686 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Borgwarner Pds (anderson), L.l.c. |
| Status | ACTIVE |
| Overall Diameter | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Departure From Cited Document | AS MODIFIED BY SURFACE TREATMENT |
| Nondefinitive Spec/std Data | A TYPE |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Thickness | 0.122 INCHES MINIMUM AND 0.177 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 |
| Part Number | Manufacturer |
|---|---|
| 1948686 | General Motors Llc Dba General Motors Llc (USA) |
| 446257 | General Motors Llc Dba General Motors Llc (USA) |
| 1948686 PRIMARY | Borgwarner Pds (anderson), L.l.c. (USA) |
| 446257 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| 446257 | 5/9 Secondary reference General Motors Corp |
| 1948686 | 5/9 Secondary reference General Motors Corp Delco Remy Div |
| 1948686 | 5/9 Secondary reference General Motors Corp |
| MILW1085TYPEA | 4/1 Identification reference U.S. Government activity |
| 828292-00 | 5/9 Secondary reference Defense Reduction Agency |
NSN 5310-00-044-6257 is a Washer,flat, manufactured by Borgwarner Pds (anderson), L.l.c., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-044-6257 has 4 manufacturer part numbers on file: 1948686 (General Motors Llc Dba General Motors Llc), 446257 (General Motors Llc Dba General Motors Llc), 1948686 (Borgwarner Pds (anderson), L.l.c.), 446257 (Army Weapons Command Attn Amswe-Ree-S).
Key specifications for 1948686: Overall Diameter: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN; Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Departure From Cited Document: AS MODIFIED BY SURFACE TREATMENT. 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.