The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-381-9901, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-381-9901 |
| Primary Part Number | 12412478-04 |
| 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 |
| Lubrication | DRY FILM LUBRICANT |
| Width Across Flats | 0.362 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.413 INCHES MINIMUM AND 0.433 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| 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 |
|---|---|
| 12412478-04 | Texas Starwares Inc Dba Texas Starwares Inc (USA) |
| 12412478-04 | Landoll Company, Llc (USA) |
| 12412478-04 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12412478-04 | Amz Alabama Inc. (USA) |
| 12412478-04 | Mac Lean-Fogg Company Dba Mac Lean Fasteners Div Maclean Power Systems (USA) |
| 12412478-04 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| Reference | Meaning |
|---|---|
| 12412478 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-381-9901 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 5310-01-381-9901 has 6 manufacturer part numbers on file: 12412478-04 (Texas Starwares Inc Dba Texas Starwares Inc), 12412478-04 (Landoll Company, Llc), 12412478-04 (U S Army Tank Automotive Command Amsta-Im-Mm), 12412478-04 (Amz Alabama Inc.), 12412478-04 (Mac Lean-Fogg Company Dba Mac Lean Fasteners Div Maclean Power Systems) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-581-2327. Verify interchangeability with system specifications before substitution.
Key specifications for 12412478-04: Lubrication: DRY FILM LUBRICANT; Width Across Flats: 0.362 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); 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.