The Washer,flat, cataloged under National Stock Number 5310-01-528-1439, 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 8 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-528-1439 |
| Primary Part Number | 12417963-003 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Overall Diameter | 10.000 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 5.000 MILLIMETERS NOMINAL MM |
| Thickness | 0.800 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 12417963-003 | Oshkosh Defense Llc (USA) |
| 12417963-003 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| DIN1440-ST-A2D | Din Deutsches Institut Fur Normung Ev (DEU) |
| 12417963-003 | Amz Alabama Inc. (USA) |
| 12417963-003 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12417963-003 | 5/9 Secondary reference Oshkosh Corp |
| 12417963 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-528-1439 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 5310-01-528-1439 has 5 manufacturer part numbers on file: 12417963-003 (Oshkosh Defense Llc), 12417963-003 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), DIN1440-ST-A2D (Din Deutsches Institut Fur Normung Ev), 12417963-003 (Amz Alabama Inc.), 12417963-003 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-582-2365, 5310-01-597-4987, 5310-01-645-3672. Verify interchangeability with system specifications before substitution.
Key specifications for 12417963-003: Overall Diameter: 10.000 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: ZINC OVERALL; 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.