The Bolt,shear, cataloged under National Stock Number 5306-01-043-5725, 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 17 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-043-5725 |
| Primary Part Number | BM17020-10-21 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Thread Length | 0.607 INCHES MINIMUM AND 0.674 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.136 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 26512-GB511B PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN |
| Width Between Flats | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.825 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| BM17020-10-21 PRIMARY | Huck International, Inc (USA) |
| VAL22034-10FS21 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC516B10D21 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VAL22034-10GS21 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| VS3071-10F21D PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BM17020-10-21 | 5/9 Secondary reference U.S. Government activity |
| VS3071-10F21D | 5/9 Secondary reference U.S. Government activity |
| H401-10D21 | 5/9 Secondary reference U.S. Government activity |
| EWSB22D10-21 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| EWSB22D10-21 | 5/2 Secondary reference U.S. Government activity |
| GB511B10D21 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5306-01-043-5725 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-043-5725 has 5 manufacturer part numbers on file: BM17020-10-21 (Huck International, Inc), VAL22034-10FS21 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), AIC516B10D21 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VAL22034-10GS21 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), VS3071-10F21D (Howmet Global Fastening Systems Inc).
Key specifications for BM17020-10-21: Head Height: 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN; Thread Length: 0.607 INCHES MINIMUM AND 0.674 INCHES MAXIMUM IN; Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL; Shank Unthreaded Hole Diameter: 0.136 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE 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.