The Bolt,shear, cataloged under National Stock Number 5306-01-042-4431, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-042-4431 |
| Primary Part Number | BM17020-5-10A |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Thread Length | 0.325 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 26512-GB511B PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| BM17020-5-10A PRIMARY | Huck International, Inc (USA) |
| VS3071-5F10 | Howmet Global Fastening Systems Inc (USA) |
| H401-5-10 | Huck International, Inc (USA) |
| AIC516B5-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| BM17020-5-10A | 5/9 Secondary reference U.S. Government activity |
| GB511B5-10 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| EWSB22D5A10 | 5/2 Secondary reference U.S. Government activity |
| H401-5-10 | 5/9 Secondary reference U.S. Government activity |
| VS3071-5F10 | 5/9 Secondary reference U.S. Government activity |
| EWSB22D5A10 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5306-01-042-4431 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-042-4431 has 4 manufacturer part numbers on file: BM17020-5-10A (Huck International, Inc), VS3071-5F10 (Howmet Global Fastening Systems Inc), H401-5-10 (Huck International, Inc), AIC516B5-10 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for BM17020-5-10A: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Thread Length: 0.325 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN; Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL; Nominal Thread Diameter: 0.312 INCHES IN. 13 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.