The Washer,lock, cataloged under National Stock Number 5310-01-374-4516, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-374-4516 |
| Primary Part Number | 12414570-021 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Style Designator | FLAT EXTERNAL TEETH |
| Material Document and Classification | DJN 17222,CAGEC D8286 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 17.6 MILLIMETERS MINIMUM AND 18.0 MILLIMETERS MAXIMUM MM |
| Material Thickness | 0.9 MILLIMETERS NOMINAL MM |
| Material | STEEL OVERALL |
| Hole Diameter | 10.5 MILLIMETERS MINIMUM AND 10.8 MILLIMETERS MAXIMUM 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 |
|---|---|
| 12414570-021 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12414570-021 | Oshkosh Defense Llc (USA) |
| 12414570-021 | Amz Alabama Inc. (USA) |
| 12414570-021 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| DIN6797-A10.5-FST-A3D | Din Deutsches Institut Fur Normung Ev (DEU) |
| Reference | Meaning |
|---|---|
| 12414570 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-374-4516 is a Washer,lock, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-374-4516 has 5 manufacturer part numbers on file: 12414570-021 (U S Army Tank Automotive Command Amsta-Im-Mm), 12414570-021 (Oshkosh Defense Llc), 12414570-021 (Amz Alabama Inc.), 12414570-021 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), DIN6797-A10.5-FST-A3D (Din Deutsches Institut Fur Normung Ev).
7 possible matches (shared part number, not a government interchangeability claim): 5310-01-388-2043, 5310-01-470-2362, 5310-01-479-5141. Verify interchangeability with system specifications before substitution.
Key specifications for 12414570-021: Style Designator: FLAT EXTERNAL TEETH; Material Document and Classification: DJN 17222,CAGEC D8286 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 17.6 MILLIMETERS MINIMUM AND 18.0 MILLIMETERS MAXIMUM MM; Material Thickness: 0.9 MILLIMETERS NOMINAL MM. 6 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.