The Bolt,shoulder, cataloged under National Stock Number 5306-01-266-8525, 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 17 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-266-8525 |
| Primary Part Number | BACB30PW4U11 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 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 | 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.249 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.320 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS 5737 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) |
| 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 |
|---|---|
| BACB30PW4U11 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30PU4-11 | Howmet Global Fastening Systems Inc (USA) |
| BACB30PW4U11 | Howmet Global Fastening Systems Inc (USA) |
| BACB30PW4U11 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30PW4U11 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30PW4U11 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30PW4U11 | Federal Manufacturing Corp (USA) |
| BACB30PW4U11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30PW4U11 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30PU4-11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PU4-11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PU4-11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PW4U11 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30PU4-11 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| BACB30PU4-11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PU4-11 | 5/9 Secondary reference U.S. Government activity |
| BACB30PU4-11 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| BACB30PU4-11 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| BACB30PU4-11 | 5/9 Secondary reference Federal Manufacturing Corp |
NSN 5306-01-266-8525 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-266-8525 has 9 manufacturer part numbers on file: BACB30PW4U11 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30PU4-11 (Howmet Global Fastening Systems Inc), BACB30PW4U11 (Howmet Global Fastening Systems Inc), BACB30PW4U11 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30PW4U11 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 4 more.
Key specifications for BACB30PW4U11: 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: 0.678 INCHES MINIMUM AND 0.698 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.