The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-176-7897, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Department of the Air Force. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-176-7897 |
| Primary Part Number | USAF330-4 |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Department of the Air Force |
| Status | ACTIVE |
| Nominal Thread Size | 0.250 INCHES IN |
| Thread Class | 2B |
| Width Across Flats | 0.438 INCHES NOMINAL IN |
| Nut Style | CASTELLATED, HEXAGON |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Thread Direction | RIGHT-HAND |
| Material | STEEL OVERALL |
| Thread Series | UNF |
| Nut Height | 0.288 INCHES NOMINAL IN |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| Thread Quantity Per Inch | 28 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| USAF330-4 | Department of the Air Force (USA) |
| 330-4 | Department of the Air Force (USA) |
| FFB571TYPEA4 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 5310-00-176-7897 is a Nut,plain,castellated,hexagon, manufactured by Department of the Air Force, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-176-7897 has 3 cross-referenced part numbers: USAF330-4 (Department of the Air Force), 330-4 (Department of the Air Force), FFB571TYPEA4 (Federal Specifications Promulgated by General Services Administration Washington DC).
There are 12 known substitutes for 5310-00-176-7897: 5310-00-042-7132, 5310-00-176-7898, 5310-00-176-7899 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for USAF330-4: Nominal Thread Size: 0.250 INCHES IN; Thread Class: 2B; Width Across Flats: 0.438 INCHES NOMINAL IN; Nut Style: CASTELLATED, HEXAGON. 11 total characteristics are documented in the Federal Logistics Information System.