The Bolt,internal Wrenching, cataloged under National Stock Number 5306-00-411-0728, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-411-0728 |
| Primary Part Number | 431B501PC20 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES HEAD |
| Width Across Flats | 0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN |
| Head Height | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Fastener Length | 5.000 INCHES NOMINAL IN |
| Thread Length | 0.875 INCHES MINIMUM IN |
| Material Document and Classification | C50A-400,GR B1601289,FSCM 24446 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.381 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 4.125 INCHES NOMINAL IN |
| Surface Treatment | COPPER AND CADMIUM OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.863 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 431B501PC20 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 431B501PC20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-411-0728 is a Bolt,internal Wrenching, manufactured by General Electric Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-411-0728 has 1 manufacturer part number on file: 431B501PC20 (General Electric Company).
Key specifications for 431B501PC20: Surface Finish: 63.0 MICROINCHES HEAD; Width Across Flats: 0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN; Head Height: 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Fastener Length: 5.000 INCHES NOMINAL IN. 17 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.