The Bolt,internal Wrenching, cataloged under National Stock Number 5306-00-404-6355, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-404-6355 |
| Primary Part Number | 431B502PC26 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Width Across Flats | 0.875 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Head Height | 1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Fastener Length | 2.250 INCHES NOMINAL IN |
| Thread Length | 1.625 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A193,GR B16 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 1.069 INCHES MINIMUM AND 1.074 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 1.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.625 INCHES NOMINAL IN |
| Surface Treatment | COPPER OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 8 |
| Material | STEEL OVERALL |
| Thread Series Designator | UN |
| Head Diameter | 1.859 INCHES MINIMUM AND 1.875 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 |
|---|---|
| 431B502PC26 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 431B502PC26 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-404-6355 is a Bolt,internal Wrenching, manufactured by General Electric Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-404-6355 has 1 manufacturer part number on file: 431B502PC26 (General Electric Company).
Key specifications for 431B502PC26: Width Across Flats: 0.875 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN; Head Height: 1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN; Fastener Length: 2.250 INCHES NOMINAL IN; Thread Length: 1.625 INCHES NOMINAL IN. 16 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.