The Washer,flat, cataloged under National Stock Number 5310-01-392-8519, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Land Systems Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-392-8519 |
| Primary Part Number | 12387279-58 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Dynamics Land Systems Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM B633, TY 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1008 OR STEEL COMP 1020 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.407 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| Thickness | 0.025 INCHES MINIMUM AND 0.040 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 |
|---|---|
| 12387279-58 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12387279-58 PRIMARY | General Dynamics Land Systems Inc. (USA) |
NSN 5310-01-392-8519 is a Washer,flat, manufactured by General Dynamics Land Systems Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-392-8519 has 2 manufacturer part numbers on file: 12387279-58 (U S Army Tank Automotive Command Amsta-Im-Mm), 12387279-58 (General Dynamics Land Systems Inc.).
Key specifications for 12387279-58: Surface Treatment Document and Classification: ASTM B633, TY 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: ZINC AND CHROMATE 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.