The Nut,plain,spline, cataloged under National Stock Number 5310-01-074-4957, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-074-4957 |
| Primary Part Number | 12286953 |
| Item Name | Nut,plain,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hardness Rating | 40.0 ROCKWELL C NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Nut Diameter | 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Pilot Diameter | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Nut Height | 0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN |
| Nut Style | SPLINE |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 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 |
|---|---|
| 12286953 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| REA-032-SU | 5/9 Secondary reference U.S. Government activity |
| RZA12419 | 3/2 Design control — primary reference U.S. Government activity |
| 12286949 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-074-4957 is a Nut,plain,spline, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-074-4957 has 1 manufacturer part number on file: 12286953 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12286953: Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Hardness Rating: 40.0 ROCKWELL C NOMINAL; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.190 INCHES IN. 10 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.