The Bolt,shear, cataloged under National Stock Number 5306-01-520-8961, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc Div City of Industry Operations. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-520-8961 |
| Primary Part Number | BACB30LH3K4 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc Div City of Industry Operations |
| Status | ACTIVE |
| Fastener Length | 0.595 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | BMS10-85, TYPE I ASSN STD SINGLE TREATMENT RESPONSE HEAD |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE HEAD |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.250 INCHES NOMINAL IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM HEAD |
| Minimum Tensile Strength | 95000 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING HEAD |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.383 INCHES NOMINAL IN |
| 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 |
|---|---|
| BACB30LH3K4 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30LH3K4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LH3K4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LH3K4 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LH3K4 | Federal Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| BACB30LH3K4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-520-8961 is a Bolt,shear, manufactured by Howmet Global Fastening Systems Inc Div City of Industry Operations, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-520-8961 has 5 manufacturer part numbers on file: BACB30LH3K4 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30LH3K4 (Sps Technologies, Llc Dba PB Fasteners), BACB30LH3K4 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LH3K4 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LH3K4 (Federal Manufacturing Corp).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-684-5503. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30LH3K4: Fastener Length: 0.595 INCHES NOMINAL IN; Surface Treatment Document and Classification: BMS10-85, TYPE I ASSN STD SINGLE TREATMENT RESPONSE HEAD; Thread Length: 0.345 INCHES NOMINAL IN; Material Document and Classification: AMS5737 ASSN STD SINGLE MATERIAL RESPONSE HEAD. 18 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.