The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-01-657-3485, 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 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-657-3485 |
| Primary Part Number | 12544120-1 |
| Item Name | Nut,plain,slotted,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Nominal Thread Size | 2.5 INCHES IN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | SLOTTED, HEXAGON |
| Thread Class | 2B |
| 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 |
|---|---|
| 12544120-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12544120 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-01-657-3485 is a Nut,plain,slotted,hexagon, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-657-3485 has 2 manufacturer part numbers on file: 12544120-1 (U S Army Tank Automotive Command Amsta-Im-Mm), 12544120 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12544120-1: Thread Series: UNIFIED NATIONAL COARSE (UNC); Nominal Thread Size: 2.5 INCHES IN; Special Features: SFTTDZINC TYPE II CLASS 5 IAW SAE AMS-C-81562; Surface Treatment: ZINC OVERALL. 6 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.