The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-781-1221, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Transdigm Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-781-1221 |
| Primary Part Number | 5004-4 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Transdigm Inc |
| Status | ACTIVE |
| Hole Type and Quantity | 1 DRILLED |
| Thread Direction | RIGHT-HAND |
| Bearing Surface Type | CHAMFERED |
| Thread Series | UNF |
| Nominal Thread Size | 0.500 INCHES IN |
| Hole Configuration Style | CONFIGURATION B |
| Thread Quantity Per Inch | 20 |
| Surface Treatment | OXIDE FILM OVERALL |
| Thread Class | 3B |
| Material | ALUMINUM ALLOY OVERALL |
| Width Across Flats | 0.338 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Drilled Hole Diameter | 0.039 INCHES NOMINAL IN |
| Nut Height | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 5004-4 PRIMARY | Transdigm Inc (USA) |
NSN 5310-00-781-1221 is a Nut,plain,hexagon, manufactured by Transdigm Inc, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-781-1221 has 1 cross-referenced part number: 5004-4 (Transdigm Inc).
There are 9 known substitutes for 5310-00-781-1221: 4820-00-218-6273, 5815-00-228-6697, 5330-00-291-3352 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 5004-4: Hole Type and Quantity: 1 DRILLED; Thread Direction: RIGHT-HAND; Bearing Surface Type: CHAMFERED; Thread Series: UNF. 15 total characteristics are documented in the Federal Logistics Information System.