The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-01-235-3172, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-235-3172 |
| Primary Part Number | W-249456 PIECE 153 |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Thread Series | UNF |
| Material Document and Classification | ASTM B164 NATIONAL SPEC SINGLE MATERIAL RESPONSE NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| 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 |
|---|---|
| W-249456 PIECE 153 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 31A4-X-8 | 3/9 Design control — primary reference U.S. Government activity |
| 31A4-M-8 | 5/9 Secondary reference U.S. Government activity |
| 31A4-X-8RH | 5/9 Secondary reference U.S. Government activity |
| 31A4-X-8 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| W-249456 PIECE 153 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-235-3172 is a Nut,plain,castellated,hexagon, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-235-3172 has 1 manufacturer part number on file: W-249456 PIECE 153 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-258-8918. Verify interchangeability with system specifications before substitution.
Key specifications for W-249456 PIECE 153: Thread Series: UNF; Material Document and Classification: ASTM B164 NATIONAL SPEC SINGLE MATERIAL RESPONSE NUT; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.750 INCHES IN. 8 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.