The Bolt,shoulder, cataloged under National Stock Number 5306-01-202-2671, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-202-2671 |
| Primary Part Number | BACB30PU7-20 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Fastener Length | 1.813 INCHES MINIMUM AND 1.843 INCHES MAXIMUM IN |
| Shoulder Length | 1.250 INCHES MINIMUM AND 1.270 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.543 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE 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 |
|---|---|
| BACB30PU7-20 | Huck International, Inc (USA) |
| BACB30PU7-20 | Howmet Global Fastening Systems Inc (USA) |
| BACB30PU7-20 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30PU7-20 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30PU7-20 | Federal Manufacturing Corp (USA) |
| BACB30PU7-20 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| BACB30PU7-20 | 5/2 Secondary reference U.S. Government activity |
| BACB30PU7-20 | 5/2 Secondary reference U.S. Government activity |
| BACB30PU7-20 | 5/2 Secondary reference U.S. Government activity |
| BACB30PU7-20 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30PU7-20 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-202-2671 is a Bolt,shoulder, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-202-2671 has 6 manufacturer part numbers on file: BACB30PU7-20 (Huck International, Inc), BACB30PU7-20 (Howmet Global Fastening Systems Inc), BACB30PU7-20 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30PU7-20 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30PU7-20 (Federal Manufacturing Corp) and 1 more.
Key specifications for BACB30PU7-20: Head Height: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN; Fastener Length: 1.813 INCHES MINIMUM AND 1.843 INCHES MAXIMUM IN; Shoulder Length: 1.250 INCHES MINIMUM AND 1.270 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.