The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-176-8091, 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 12 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 | 5310-00-176-8091 |
| Primary Part Number | USAF330-20 |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Department of the Air Force |
| Status | ACTIVE |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Quantity Per Inch | 12 |
| Nominal Thread Size | 1.250 INCHES IN |
| Thread Class | 2B |
| Nondefinitive Spec/std Data | A4 TYPE |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| Width Across Flats | 1.875 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND ZINC OVERALL |
| Thread Series | UNF |
| Material | STEEL OVERALL |
| Nut Height | 1.272 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| USAF330-20 | Department of the Air Force (USA) |
| 330-20 | Department of the Air Force (USA) |
| FFB571TYPEA4 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 5310-00-176-8091 is a Nut,plain,castellated,hexagon, manufactured by Department of the Air Force, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-176-8091 has 3 cross-referenced part numbers: USAF330-20 (Department of the Air Force), 330-20 (Department of the Air Force), FFB571TYPEA4 (Federal Specifications Promulgated by General Services Administration Washington DC).
There are 12 known substitutes for 5310-00-176-8091: 5310-00-042-7132, 5310-00-176-7897, 5310-00-176-7898 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for USAF330-20: Nut Style: CASTELLATED, HEXAGON; Thread Quantity Per Inch: 12; Nominal Thread Size: 1.250 INCHES IN; Thread Class: 2B. 12 total characteristics are documented in the Federal Logistics Information System.