The Nut,sleeve, cataloged under National Stock Number 5310-01-228-3299, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-228-3299 |
| Primary Part Number | 12339924 |
| Item Name | Nut,sleeve |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Nut Length | 1.25 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-46168 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Length | 0.750 INCHES NOMINAL OVERALL IN |
| Nut Width Across Flats | 0.750 INCHES NOMINAL IN |
| Material Document and Classification | ASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Cross-Sectional Shape | SQUARE BOTH ENDS |
| Surface Treatment | PLASTIC OVERALL |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | ALUMINUM ALLOY 6061 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 |
|---|---|
| 12339924 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5590138 | 3/9 Design control — primary reference Am General Llc |
NSN 5310-01-228-3299 is a Nut,sleeve, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-228-3299 has 1 manufacturer part number on file: 12339924 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12339924: Nut Length: 1.25 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-46168 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Length: 0.750 INCHES NOMINAL OVERALL IN. 13 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.