The Bolt,machine, cataloged under National Stock Number 5306-01-685-5718, 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 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-685-5718 |
| Primary Part Number | BACB30PN4-19 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc Div City of Industry Operations |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Extended Washer Thickness | 0.042 INCHES NOMINAL IN |
| Head Height | 0.225 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN |
| Fastener Length | 1.188 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS2700, METHOD 1, TY 2 OR TY 8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.470 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5962 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.187 INCHES NOMINAL IN |
| Width Between Flats | 0.347 INCHES MINIMUM AND 0.361 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2490 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| BACB30PN4-19 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30PN4-19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30PN4-19 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30PN4-19 | Federal Manufacturing Corp (USA) |
| BACB30PN4-19 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30PN4-19 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30PN4-19 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BACB30PN4-19 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5306-01-685-5718 is a Bolt,machine, manufactured by Howmet Global Fastening Systems Inc Div City of Industry Operations, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-685-5718 has 7 manufacturer part numbers on file: BACB30PN4-19 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30PN4-19 (Sps Technologies, Llc Dba PB Fasteners), BACB30PN4-19 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), BACB30PN4-19 (Federal Manufacturing Corp), BACB30PN4-19 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 2 more.
Key specifications for BACB30PN4-19: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Extended Washer Thickness: 0.042 INCHES NOMINAL IN; Head Height: 0.225 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN. 20 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.