The Washer,lock, cataloged under National Stock Number 5310-00-007-1607, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Philadelphia Steel and Wire Corp. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-007-1607 |
| Primary Part Number | QR816 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Philadelphia Steel and Wire Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.832 INCHES MINIMUM AND 0.842 INCHES MAXIMUM IN |
| Material Thickness | 0.120 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1060 OVERALL |
| Hole Diameter | 0.502 INCHES MINIMUM AND 0.512 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 |
|---|---|
| 5597361 | Am General Llc (USA) |
| QR816 PRIMARY | Philadelphia Steel and Wire Corp (USA) |
| 11648629-5 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-00-007-1607 is a Washer,lock, manufactured by Philadelphia Steel and Wire Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-007-1607 has 3 manufacturer part numbers on file: 5597361 (Am General Llc), QR816 (Philadelphia Steel and Wire Corp), 11648629-5 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for QR816: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE 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.