The Bolt,shear, cataloged under National Stock Number 5306-01-052-1185, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-052-1185 |
| Primary Part Number | GB511B8-15 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 1.438 INCHES MINIMUM AND 1.485 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 | 0.928 INCHES MINIMUM AND 0.948 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 |
| 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 |
|---|---|
| GB511B8-15 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GB511B8-15 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GB511B8-15 | Huck International, Inc (USA) |
| GB511B8-15 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GB511B8-15 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| GB511B8-15 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VAL22034-8F15 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| GB511B8-15 | 5/2 Secondary reference U.S. Government activity |
| BM17020-8-15A | 5/9 Secondary reference U.S. Government activity |
| H401-8-15 | 5/9 Secondary reference U.S. Government activity |
| VS3071-8F15 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| EWSB22D8-A15 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| AIC516B8-15 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| VS3071-8F15 | 5/9 Secondary reference U.S. Government activity |
| BM17020-8-15A | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| EWSB22D8-A15 | 5/9 Secondary reference U.S. Government activity |
| VAL22034-8G15 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
NSN 5306-01-052-1185 is a Bolt,shear, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-052-1185 has 6 manufacturer part numbers on file: GB511B8-15 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GB511B8-15 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), GB511B8-15 (Huck International, Inc), GB511B8-15 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), GB511B8-15 (Northrop Grumman Systems Corporation) and 1 more.
Key specifications for GB511B8-15: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 1.438 INCHES MINIMUM AND 1.485 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. 16 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.