The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-683-7565, 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 16 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 | 5310-01-683-7565 |
| Primary Part Number | 12286996-2 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Washer Outside Diameter | 0.786 INCHES MAXIMUM IN |
| Width Across Flats | 0.618 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2411 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Precious Material | SILVER |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.100 INCHES MINIMUM IN |
| Material Document and Classification | AMS 7251 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS 5737 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.5000 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | SILVER OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| 12286996-2 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-01-683-7565 is a Nut,self-Locking,extended Washer, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-683-7565 has 1 manufacturer part number on file: 12286996-2 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12286996-2: Overall Height: 0.565 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN; Washer Outside Diameter: 0.786 INCHES MAXIMUM IN; Width Across Flats: 0.618 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2411 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL. 16 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.