The Washer,key, cataloged under National Stock Number 5310-00-404-3209, 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 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-404-3209 |
| Primary Part Number | 11659880 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-P-16232 TYPE Z CLASS 1 OR JBCQQ-Z-325 TYPE 1 CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Inside of Prebent Key | 1.2262 INCHES NOMINAL IN |
| External Prebent Key Length | 0.250 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 2.024 INCHES NOMINAL IN |
| Hardness Rating | 64.0 ROCKWELL B NOMINAL |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Material Thickness | 0.0478 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE OR ZINC OVERALL |
| External Prebent Key Width | 0.305 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1012 OVERALL |
| Hole Diameter | 0.531 INCHES NOMINAL 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 |
|---|---|
| 11659880 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-00-404-3209 is a Washer,key, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-404-3209 has 1 manufacturer part number on file: 11659880 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11659880: Surface Treatment Document and Classification: MIL-P-16232 TYPE Z CLASS 1 OR JBCQQ-Z-325 TYPE 1 CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OVERALL; Distance From Centerline to Inside of Prebent Key: 1.2262 INCHES NOMINAL IN; External Prebent Key Length: 0.250 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN; Overall Distance Including Keys: 2.024 INCHES NOMINAL IN. 13 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.