The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-672-1409, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Norma Pennsylvania Inc. Div Breeze Industrial Products. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-672-1409 |
| Primary Part Number | A9200-149 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Norma Pennsylvania Inc. Div Breeze Industrial Products |
| Status | ACTIVE |
| Width Across Flats | 0.489 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Thread Series | UNS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.31 INCHES IN |
| Locking Feature | NYLON INSERT |
| Nut Height | 0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| A9200-149 PRIMARY | Norma Pennsylvania Inc. Div Breeze Industrial Products (USA) |
| Reference | Meaning |
|---|---|
| 4275321 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 5310-01-672-1409 is a Nut,self-Locking,hexagon, manufactured by Norma Pennsylvania Inc. Div Breeze Industrial Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-672-1409 has 1 manufacturer part number on file: A9200-149 (Norma Pennsylvania Inc. Div Breeze Industrial Products).
Key specifications for A9200-149: Width Across Flats: 0.489 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN; Thread Series: UNS; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.31 INCHES IN. 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.