The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-657-3538, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-657-3538 |
| Primary Part Number | 12600461-001 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Width Across Flats | 18.67 MILLIMETERS MINIMUM AND 19.00 MILLIMETERS MAXIMUM MM |
| Thread Series | M |
| Thread Pitch in Millimeters | 1.75 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 12.0 MILLIMETERS MM |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 11.00 MILLIMETERS MINIMUM AND 12.00 MILLIMETERS MAXIMUM MM |
| Surface Treatment | PHOSPHATE ZINC OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 6H |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED OR FLAT |
| 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 |
|---|---|
| 12600461-001 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 3862295001 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 3862295 | D/9 Drawing number reference only Oshkosh Defense Llc |
NSN 5310-01-657-3538 is a Nut,self-Locking,hexagon, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-657-3538 has 2 manufacturer part numbers on file: 12600461-001 (U S Army Tank Automotive Command Amsta-Im-Mm), 3862295001 (Oshkosh Defense Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-658-3096, 5310-01-661-5058, 5310-01-661-5080. Verify interchangeability with system specifications before substitution.
Key specifications for 12600461-001: Width Across Flats: 18.67 MILLIMETERS MINIMUM AND 19.00 MILLIMETERS MAXIMUM MM; Thread Series: M; Thread Pitch in Millimeters: 1.75; Thread Direction: RIGHT-HAND. 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.