The Bolt,shear, cataloged under National Stock Number 5306-01-394-4491, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-394-4491 |
| Primary Part Number | BACB30US5K9 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Extended Washer Thickness | 0.021 INCHES NOMINAL IN |
| Head Height | 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN |
| Fastener Length | 4.053 INCHES MINIMUM AND 4.083 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | BMS 10-85, TYPE 1, CAGE 81205 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN |
| Thread Length | 0.593 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Features Provided | DRY FILM LUBRICANT |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 3.465 INCHES MINIMUM AND 4.485 INCHES MAXIMUM IN |
| Width Between Flats | 0.418 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Color | BLACK THREADS |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 718 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 |
|---|---|
| BACB30US5K9 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30US5K9 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30US5K9 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| BACB30US5K9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30US5K9 | Federal Manufacturing Corp (USA) |
| BACB30US5K9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BACB30US5K9 | Howmet Global Fastening Systems Inc (USA) |
| BACB30US5K9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30US5K9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30US5K9 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BACB30US5K9 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30US5K9 | 5/9 Secondary reference Huck International, Inc |
| BACB30US5K9 | 5/9 Secondary reference Mecair Aerospace Industries,subsidiary of Spstechnologiesdiv Division of Sps Technologiesdba Mecair Inc. Div Division of Sps Technologies |
NSN 5306-01-394-4491 is a Bolt,shear, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-394-4491 has 10 manufacturer part numbers on file: BACB30US5K9 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), BACB30US5K9 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30US5K9 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), BACB30US5K9 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30US5K9 (Federal Manufacturing Corp) and 5 more.
Key specifications for BACB30US5K9: Extended Washer Thickness: 0.021 INCHES NOMINAL IN; Head Height: 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN; Fastener Length: 4.053 INCHES MINIMUM AND 4.083 INCHES MAXIMUM IN; Surface Treatment Document and Classification: BMS 10-85, TYPE 1, CAGE 81205 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 22 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.