The Washer,spring Tension, cataloged under National Stock Number 5310-01-421-9556, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-421-9556 |
| Primary Part Number | 12414560-011 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Outside Diameter | 9.2 MILLIMETERS MAXIMUM MM |
| Material Thickness | 1.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 5.1 MILLIMETERS MINIMUM AND 5.4 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 |
|---|---|
| DIN128 A5 FST-A3D | Din Deutsches Institut Fur Normung Ev (DEU) |
| 12414560-011 | Amz Alabama Inc. (USA) |
| 12414560-011 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12414560-011 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| Reference | Meaning |
|---|---|
| 12414560 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-421-9556 is a Washer,spring Tension, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-421-9556 has 4 manufacturer part numbers on file: DIN128 A5 FST-A3D (Din Deutsches Institut Fur Normung Ev), 12414560-011 (Amz Alabama Inc.), 12414560-011 (U S Army Tank Automotive Command Amsta-Im-Mm), 12414560-011 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc).
7 possible matches (shared part number, not a government interchangeability claim): 5310-01-442-1717, 5310-01-493-9741, 5310-01-560-0270. Verify interchangeability with system specifications before substitution.
Key specifications for 12414560-011: Overall Height: 1.5 MILLIMETERS MINIMUM AND 1.7 MILLIMETERS MAXIMUM MM; Style Designator: SPRING TENSION; Outside Diameter: 9.2 MILLIMETERS MAXIMUM MM; Material Thickness: 1.0 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.