The Nut,plain,round, cataloged under National Stock Number 5310-01-423-8523, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-423-8523 |
| Primary Part Number | 12373955 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Thread Series | UNF |
| Material Document and Classification | L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Diameter | 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN |
| Nut Thickness | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 28 |
| Material | PLASTIC POLYAMIDE NYLON OR PLASTIC POLYHEXAMETHYLENE ADIPAMIDE 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 |
|---|---|
| 12373955 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
| 1581R-N.750N | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
| Reference | Meaning |
|---|---|
| 12373955 | 5/9 Secondary reference General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc |
NSN 5310-01-423-8523 is a Nut,plain,round, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-423-8523 has 2 manufacturer part numbers on file: 12373955 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems), 1581R-N.750N (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
Key specifications for 12373955: Thread Series: UNF; Material Document and Classification: L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.250 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.