The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-056-7252, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Federal Manufacturing Corp. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-056-7252 |
| Primary Part Number | BACB30NF14D54 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Federal Manufacturing Corp |
| 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 | 0.438 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Fastener Length | 4.122 INCHES MINIMUM AND 4.152 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.737 INCHES MINIMUM AND 0.787 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Head Style | UNDERCUT HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 3.365 INCHES MINIMUM AND 3.385 INCHES MAXIMUM IN |
| Width Between Flats | 1.239 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN |
| Grip Diameter | 0.8730 INCHES MINIMUM AND 0.8740 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.978 INCHES MINIMUM AND 4.028 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| BACB30NF14D54 | Federal Manufacturing Corp (USA) |
| BACB30NF14D54 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30NF14D54 | Howmet Global Fastening Systems Inc (USA) |
| BACB30NF14D54 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30NF14D54 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30NF14D54 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BACB30NF14D54 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30NF14D54 | 5/9 Secondary reference U.S. Government activity |
| BACB30NF14D54 | 5/9 Secondary reference Voi-Shan/chatsworth Div of Vsi Corp Sub of Fairchild Industries Inc |
NSN 5306-01-056-7252 is a Bolt,close Tolerance, manufactured by Federal Manufacturing Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-056-7252 has 6 manufacturer part numbers on file: BACB30NF14D54 (Federal Manufacturing Corp), BACB30NF14D54 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30NF14D54 (Howmet Global Fastening Systems Inc), BACB30NF14D54 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30NF14D54 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 1 more.
Key specifications for BACB30NF14D54: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.438 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN. 21 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.