The Bolt,shear, cataloged under National Stock Number 5306-01-043-5721, 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 22 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-043-5721 |
| Primary Part Number | H381-5412 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| Head Height | 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Thread Length | 0.455 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 26512-GB511W PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.055 INCHES NOMINAL 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 |
|---|---|
| AIC515-5H12 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VEP220121-5FH12 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| PBF1079-5H12 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VEP220121-5VH12 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| H381-5412 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| GB511W5H12 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| VS3070F5H12 | 5/9 Secondary reference U.S. Government activity |
| LWB22-5H12 | 5/2 Secondary reference U.S. Government activity |
| BM3315-5H12 | 5/9 Secondary reference U.S. Government activity |
| LWB22-5H12 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| H381-5H12 | 5/9 Secondary reference U.S. Government activity |
| H381-5H12 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM3315-5H12 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-043-5721 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-043-5721 has 5 manufacturer part numbers on file: AIC515-5H12 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VEP220121-5FH12 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), PBF1079-5H12 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VEP220121-5VH12 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), H381-5412 (Huck International, Inc).
Key specifications for H381-5412: Extended Washer Thickness: 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN; Head Height: 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN; Extended Washer Diameter: 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN; Thread Length: 0.455 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN. 22 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.