The Bolt,shear, cataloged under National Stock Number 5306-01-161-4002, 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 19 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-161-4002 |
| Primary Part Number | GB511EB8-91 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 6.304 INCHES MINIMUM AND 6.351 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS672 ASSN STD 1ST TREATMENT RESPONSE OR MIL-C-8837 TY 2 CL 2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.616 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 5.688 INCHES NOMINAL 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 OR CADMIUM AND CHROMATE 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 |
|---|---|
| GB511EB8-91 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GB511EB8-91 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GB511EB8-91 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GB511EB8-91 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| GB511EB8-91 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| AIC558-8-91 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| PBF1290-8-91 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| H408F8-91 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM17035-8-91-A | 5/9 Secondary reference U.S. Government activity |
| VCD0004-8-91F | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| GB511EB8-91 | 5/2 Secondary reference U.S. Government activity |
| VS3244F-8-91 | 5/9 Secondary reference U.S. Government activity |
| BM17035-8-91-A | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 79894D8-91 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| H408F8-91 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-161-4002 is a Bolt,shear, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-161-4002 has 5 manufacturer part numbers on file: GB511EB8-91 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GB511EB8-91 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), GB511EB8-91 (Sps Technologies, Llc Dba PB Fasteners), GB511EB8-91 (Northrop Grumman Systems Corporation), GB511EB8-91 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for GB511EB8-91: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 6.304 INCHES MINIMUM AND 6.351 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS672 ASSN STD 1ST TREATMENT RESPONSE OR MIL-C-8837 TY 2 CL 2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL. 19 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.