The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-653-0068, 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 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-653-0068 |
| Primary Part Number | 4181936002 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Width Across Flats | 0.557 INCHES NOMINAL IN |
| Material Document and Classification | AMS-B18.16.6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 4181936002 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 4181936 | D/9 Drawing number reference only Oshkosh Defense Llc |
NSN 5310-01-653-0068 is a Nut,self-Locking,extended Washer, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-653-0068 has 1 manufacturer part number on file: 4181936002 (Oshkosh Defense Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-658-7404. Verify interchangeability with system specifications before substitution.
Key specifications for 4181936002: Overall Height: 0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN; Width Across Flats: 0.557 INCHES NOMINAL IN; Material Document and Classification: AMS-B18.16.6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: NUT HEX LOCKING-.31-18, DIAMETER-0.31, WIDTH ACCROSS POINTS-0.557, HEX HIGHT-0.250, LOCKING FEATURE-NYLON INSERT. 5 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.