The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-338-2832, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 19 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-338-2832 |
| Primary Part Number | BACB30LJ4-17 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 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 | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 1.436 INCHES MINIMUM AND 1.466 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.389 INCHES NOMINAL IN |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2479 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| BACB30LJ4-17 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LJ4-17 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LJ4-17 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LJ4-17 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30LJ4-17 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30LJ4-17 | Federal Manufacturing Corp (USA) |
| BACB30LJ4-17 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| BACB30LJ4-17 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ4-17 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACB30LJ4-17 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ4-17 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LJ4-17 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-338-2832 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-338-2832 has 7 manufacturer part numbers on file: BACB30LJ4-17 (Sps Technologies, Llc Dba PB Fasteners), BACB30LJ4-17 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LJ4-17 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LJ4-17 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), BACB30LJ4-17 (Howmet Global Fastening Systems Inc Div City of Industry Operations) and 2 more.
Key specifications for BACB30LJ4-17: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.125 INCHES MINIMUM AND 0.140 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.