The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-079-4646, 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 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-079-4646 |
| Primary Part Number | 12448437-6 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Washer Outside Diameter | 1.585 INCHES NOMINAL IN |
| Width Across Flats | 1.088 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Washer Thickness | 0.110 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 10 |
| 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 |
|---|---|
| MB219B20000 | Am General Llc (USA) |
| 12448437-6 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| RCSK14722-4D | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| RCSK14722-4D | 5/9 Secondary reference Am General Llc |
NSN 5310-01-079-4646 is a Nut,plain,extended Washer,hexago, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-079-4646 has 2 manufacturer part numbers on file: MB219B20000 (Am General Llc), 12448437-6 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12448437-6: Overall Height: 0.825 INCHES NOMINAL IN; Washer Outside Diameter: 1.585 INCHES NOMINAL IN; Width Across Flats: 1.088 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC). 11 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.