The Nut,self-Locking,cone Seat,hexag, cataloged under National Stock Number 5310-01-523-2131, 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. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Nut,self-Locking,cone Seat,hexag |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | U S Army Tank Automotive Command Amsta-Im-Mm (CAGE 19207); Fastenal Company Dba Fastenal Co (CAGE 0Y3H3); Oshkosh Defense Llc (CAGE 75Q65) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-523-2131 |
| Primary Part Number | 12601928 |
| Item Name | Nut,self-Locking,cone Seat,hexag |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| 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 |
|---|---|
| 12601928 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 10823-01948 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
| 3222701 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 3222701 | 5/9 Secondary reference Oshkosh Corp |
NSN 5310-01-523-2131 is a Nut,self-Locking,cone Seat,hexag, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-523-2131 has 3 manufacturer part numbers on file: 12601928 (U S Army Tank Automotive Command Amsta-Im-Mm), 10823-01948 (Fastenal Company Dba Fastenal Co), 3222701 (Oshkosh Defense Llc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-610-8966. Verify interchangeability with system specifications before substitution.
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.