The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-170-1349, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-170-1349 |
| Primary Part Number | BACB30LJ5-22 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Fastener Length | 1.814 INCHES MINIMUM AND 1.844 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.429 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | UNDERCUT HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| BACB30LJ5-22 | Heartland Precision Fasteners Inc (USA) |
| BACB30LJ5-22 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACB30LJ5-22 | Federal Manufacturing Corp (USA) |
| BACB30LJ5-22 | Boeing Defence Australia Ltd (AUS) |
| BACB30LJ5-22 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LJ5-22 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LJ5-22 | Briles Aerospace, Llc (USA) |
| BACB30LJ5-22 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30LJ5-22 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30LJ5-22 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30LJ5-22 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LJ5-22 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACB30LJ5-22 | 5/2 Secondary reference U.S. Government activity |
| BACB30LJ5-22 | 5/9 Secondary reference Huck International, Inc |
| BACB30LJ5-22 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ5-22 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ5-22 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
NSN 5306-01-170-1349 is a Bolt,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-170-1349 has 10 manufacturer part numbers on file: BACB30LJ5-22 (Heartland Precision Fasteners Inc), BACB30LJ5-22 (Boeing Defence Australia Ltd Div Defense, Space & Security), BACB30LJ5-22 (Federal Manufacturing Corp), BACB30LJ5-22 (Boeing Defence Australia Ltd), BACB30LJ5-22 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 5 more.
Key specifications for BACB30LJ5-22: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN. 19 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.