The Bolt,shear, cataloged under National Stock Number 5306-01-043-5711, 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 9 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-043-5711 |
| Primary Part Number | H401-8D16 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Thread Length | 0.490 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 26512-GB511B MANUFACTURERS STANDARD |
| Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Width Between Flats | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.376 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 |
|---|---|
| H401-8D16 PRIMARY | Huck International, Inc (USA) |
| GB511B8D16 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC516B8D16 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GB511B8D16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VAL22034-8FS16 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GB511B8D16 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VAL22034-8GS16 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GB511B8D16 | Hi-Shear Corporation (USA) |
| GB511B8D16 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BM17020-8-16 | 5/9 Secondary reference U.S. Government activity |
| EWSB22D8-16 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| GB511B8D16 | 5/2 Secondary reference U.S. Government activity |
| VS3071-8F16D | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| GB511B8D16 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| EWSB22D8-16 | 3/2 Design control — primary reference U.S. Government activity |
| BM17020-8-16 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| VS3071-8F16D | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-043-5711 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-043-5711 has 9 manufacturer part numbers on file: H401-8D16 (Huck International, Inc), GB511B8D16 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), AIC516B8D16 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), GB511B8D16 (Sps Technologies, Llc Dba PB Fasteners), VAL22034-8FS16 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 4 more.
Key specifications for H401-8D16: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Thread Length: 0.490 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN; Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL; Shank Unthreaded Hole Diameter: 0.101 INCHES MINIMUM AND 0.111 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.