The Washer,flat, cataloged under National Stock Number 5310-00-741-6478, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-741-6478 |
| Primary Part Number | 7416478 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Width Across Flats | 0.650 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN |
| Length | 0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PHOSPHATE OR ZINC OVERALL |
| Peripheral Shape Style | RECTANGULAR |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.396 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN |
| Thickness | 0.0498 INCHES MINIMUM AND 0.0698 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 |
|---|---|
| 7416478 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 805842 | 5/9 Secondary reference Am General Llc |
| FF-W-92 CLASSA | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-741-6478 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-741-6478 has 1 manufacturer part number on file: 7416478 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7416478: Width Across Flats: 0.650 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN; Length: 0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PHOSPHATE OR ZINC 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.