The Washer,key, cataloged under National Stock Number 5310-01-511-1664, 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 12 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 | 5310-01-511-1664 |
| Primary Part Number | 7767350 |
| 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 | QQ-P-416, TYPE I, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OR 11-Z-325, TYPE II, CLAS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Inside of Prebent Key | 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-698, COMMERCIAL QUALITY, TEMPER 2 OR 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.530 INCHES NOMINAL IN |
| External Tapered Key Width | 0.300 INCHES NOMINAL IN |
| Material Thickness | 0.048 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE OR ZINC OVERALL |
| External Prebent Key Width | 0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Angle Between External Keys | 60.0 DEGREES NOMINAL |
| Hole Diameter | 0.325 INCHES MINIMUM AND 0.330 INCHES MAXIMUM 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 |
|---|---|
| 7767350 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-01-511-1664 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 5310-01-511-1664 has 1 manufacturer part number on file: 7767350 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7767350: Surface Treatment Document and Classification: QQ-P-416, TYPE I, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OR 11-Z-325, TYPE II, CLAS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance From Centerline to Inside of Prebent Key: 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: QQ-S-698, COMMERCIAL QUALITY, TEMPER 2 OR 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 12 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.