The Bolt,shear, cataloged under National Stock Number 5306-01-052-1186, 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 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-052-1186 |
| Primary Part Number | H401-8-26 |
| 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 |
| Fastener Length | 2.125 INCHES MINIMUM AND 2.172 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 |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 26512-GB511B MANUFACTURERS STANDARD |
| Grip Length | 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Grip Diameter | 0.4982 INCHES MINIMUM AND 0.4991 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) |
| 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 |
|---|---|
| GB511B8-26 | Howmet Global Fastening Systems Inc (USA) |
| GB511B8-26 | Hi-Shear Corporation (USA) |
| H401-8-26 PRIMARY | Huck International, Inc (USA) |
| VAL22034-8F26 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC516B8-26 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GB511B8-26 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VS3071-8F26 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| EWSB22D8-26 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BM17020-8-26A | Huck International, Inc (USA) |
| GB511B8-26 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| GB511B8-26 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| EWSB22D8-26 | 5/9 Secondary reference U.S. Government activity |
| H401-8-26 | 5/9 Secondary reference U.S. Government activity |
| BM17020-8-26A | 5/9 Secondary reference Deutsch Fastener Corp |
| VS3071-8F26 | 5/9 Secondary reference U.S. Government activity |
| BM17020-8-26A | 5/9 Secondary reference U.S. Government activity |
| VAL22034-8G26 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
NSN 5306-01-052-1186 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-052-1186 has 10 manufacturer part numbers on file: GB511B8-26 (Howmet Global Fastening Systems Inc), GB511B8-26 (Hi-Shear Corporation), H401-8-26 (Huck International, Inc), VAL22034-8F26 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), AIC516B8-26 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 5 more.
Key specifications for H401-8-26: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 2.125 INCHES MINIMUM AND 2.172 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. 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.