The Washer,flat, cataloged under National Stock Number 5310-01-409-1661, 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 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-409-1661 |
| Primary Part Number | 12417963-008 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | DIN 267 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 25.0 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 12.0 MILLIMETERS NOMINAL MM |
| Thickness | 2.0 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 |
|---|---|
| 12417963-008 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| 12417963-008 | Amz Alabama Inc. (USA) |
| 12417963-008 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| DIN1440 -A12-ST-A3D | Din Deutsches Institut Fur Normung Ev (DEU) |
NSN 5310-01-409-1661 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 5310-01-409-1661 has 4 manufacturer part numbers on file: 12417963-008 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 12417963-008 (Amz Alabama Inc.), 12417963-008 (U S Army Tank Automotive Command Amsta-Im-Mm), DIN1440 -A12-ST-A3D (Din Deutsches Institut Fur Normung Ev).
Key specifications for 12417963-008: Surface Treatment Document and Classification: DIN 267 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 25.0 MILLIMETERS NOMINAL MM; 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.