The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-431-8750, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-431-8750 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Width Across Flats | 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN |
| Head Height | 0.625 INCHES NOMINAL IN |
| Fastener Length | 6.678 INCHES MINIMUM AND 6.698 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416TII,C2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | ROUND |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT FILLISTER |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.055 INCHES NOMINAL IN |
| Head Diameter | 0.622 INCHES MINIMUM AND 0.624 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 |
| Reference | Meaning |
|---|---|
| 52108-34 | 5/9 Secondary reference Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
| MS20010H92 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-431-8750 is a Bolt,internal Wrenching, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-431-8750: Width Across Flats: 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN; Head Height: 0.625 INCHES NOMINAL IN; Fastener Length: 6.678 INCHES MINIMUM AND 6.698 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416TII,C2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.