The Bolt,shear, cataloged under National Stock Number 5306-01-537-2655, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-537-2655 |
| Primary Part Number | BACB30LM4K3P |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.613 INCHES NOMINAL IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.188 INCHES NOMINAL IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.249 INCHES NOMINAL IN |
| Locking Feature | PATCH THREADS |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 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 |
|---|---|
| BACB30LM4K3P | Howmet Global Fastening Systems Inc (USA) |
| BACB30LM4K3P | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30LM4K3P | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LM4K3P | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LM4K3P | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LM4K3P | Federal Manufacturing Corp (USA) |
| BACB30LM4K3P | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30LM4K3P | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-537-2655 is a Bolt,shear, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-537-2655 has 7 manufacturer part numbers on file: BACB30LM4K3P (Howmet Global Fastening Systems Inc), BACB30LM4K3P (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30LM4K3P (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LM4K3P (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LM4K3P (Sps Technologies, Llc Dba PB Fasteners) and 2 more.
Key specifications for BACB30LM4K3P: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 0.613 INCHES NOMINAL IN; Thread Length: 0.425 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 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.