The Bolt,shoulder, cataloged under National Stock Number 5306-01-280-5671, 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 20 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-280-5671 |
| Primary Part Number | BACB30FD12-45Y |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Head Height | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Fastener Length | 3.740 INCHES MINIMUM AND 3.820 INCHES MAXIMUM IN |
| Shoulder Length | 2.802 INCHES MINIMUM AND 2.822 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.7792 INCHES MINIMUM AND 0.7802 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.968 INCHES MINIMUM AND 1.018 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.792 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR CHROMATE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP E4340 OR STEEL COMP 8740 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 |
|---|---|
| BACB30FD12-45Y PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30FD12-45Y | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30FD12-45Y | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30FD12-45Y | 5/2 Secondary reference U.S. Government activity |
| BACB30FD12-45Y | 7/2 Vendor item drawing reference U.S. Government activity |
| BACB30FD12-45Y | 5/9 Secondary reference U.S. Government activity |
| BACB30FD12-45Y | 5/9 Secondary reference A-Aba Cellophane Products Corp |
NSN 5306-01-280-5671 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 5306-01-280-5671 has 3 manufacturer part numbers on file: BACB30FD12-45Y (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30FD12-45Y (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30FD12-45Y (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for BACB30FD12-45Y: Extended Washer Thickness: 0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Head Height: 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN; Fastener Length: 3.740 INCHES MINIMUM AND 3.820 INCHES MAXIMUM IN; Shoulder Length: 2.802 INCHES MINIMUM AND 2.822 INCHES MAXIMUM FIRST SHOULDER IN. 20 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.