The Bolt,shoulder, cataloged under National Stock Number 5306-01-258-6021, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-258-6021 |
| Primary Part Number | BACB30PU4D11 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 1.018 INCHES MINIMUM AND 1.048 INCHES MAXIMUM IN |
| Shoulder Length | 0.688 INCHES MINIMUM AND 0.708 INCHES MAXIMUM ALL SHOULDERS IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM ALL SHOULDERS IN |
| Thread Length | 0.310 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.845 INCHES MINIMUM AND 0.895 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 |
|---|---|
| BACB30PU4D11 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30PU4D11 | Howmet Global Fastening Systems Inc (USA) |
| BACB30PU4D11 | Federal Manufacturing Corp (USA) |
| BACB30PU4D11 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30PU4D11 | Huck International, Inc (USA) |
| BACB30PU4D11 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30PU4D11 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30PU4D11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30PU4D11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PU4D11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PU4D11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PU4D11 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30PU4D11 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-258-6021 is a Bolt,shoulder, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-258-6021 has 8 manufacturer part numbers on file: BACB30PU4D11 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30PU4D11 (Howmet Global Fastening Systems Inc), BACB30PU4D11 (Federal Manufacturing Corp), BACB30PU4D11 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30PU4D11 (Huck International, Inc) and 3 more.
Key specifications for BACB30PU4D11: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 1.018 INCHES MINIMUM AND 1.048 INCHES MAXIMUM IN; Shoulder Length: 0.688 INCHES MINIMUM AND 0.708 INCHES MAXIMUM ALL SHOULDERS IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.