The Washer,lock, cataloged under National Stock Number 5310-01-661-0612, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 8 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 | 5310-01-661-0612 |
| Primary Part Number | 4246092 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM B633, TYPE III INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | FLAT INTERNAL TEETH |
| Material Document and Classification | SAE J403 1050-1065 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.630 INCHES NOMINAL IN |
| Material Thickness | 0.060 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 1.020 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 |
|---|---|
| 4246092 PRIMARY | Oshkosh Defense Llc (USA) |
NSN 5310-01-661-0612 is a Washer,lock, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-661-0612 has 1 manufacturer part number on file: 4246092 (Oshkosh Defense Llc).
Key specifications for 4246092: Surface Treatment Document and Classification: ASTM B633, TYPE III INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: FLAT INTERNAL TEETH; Material Document and Classification: SAE J403 1050-1065 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.630 INCHES NOMINAL IN. 8 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.