The Bolt,shear, cataloged under National Stock Number 5306-01-144-3903, 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 17 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-144-3903 |
| Primary Part Number | GB511B7-24 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Fastener Length | 1.950 INCHES MINIMUM AND 1.997 INCHES MAXIMUM IN |
| Thread Length | 0.440 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.678 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN |
| Grip Diameter | 0.4358 INCHES MINIMUM AND 0.4367 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 |
|---|---|
| VAL22034-7F24 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC516B7-24 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF10783-7-24 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GB511B7-24 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| EWSB22D7A24 | 5/9 Secondary reference U.S. Government activity |
| EWSB22D7A24 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| VS3071-7F24 | 5/9 Secondary reference U.S. Government activity |
| BM17020-7A24 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM17020-7A24 | 5/9 Secondary reference U.S. Government activity |
| VS3071-7F24 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
NSN 5306-01-144-3903 is a Bolt,shear, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-144-3903 has 4 manufacturer part numbers on file: VAL22034-7F24 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), AIC516B7-24 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF10783-7-24 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GB511B7-24 (Northrop Grumman Systems Corporation).
Key specifications for GB511B7-24: Head Height: 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Fastener Length: 1.950 INCHES MINIMUM AND 1.997 INCHES MAXIMUM IN; Thread Length: 0.440 INCHES MINIMUM AND 0.507 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.