The Bolt,shoulder, cataloged under National Stock Number 5306-01-045-9540, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 16 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-045-9540 |
| Primary Part Number | ST3M507-4-6 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Fastener Length | 0.756 INCHES MINIMUM AND 0.803 INCHES MAXIMUM IN |
| Shoulder Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.2802 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-507 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL 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 |
|---|---|
| 11921-4-6 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HP5507-4-6 | Heartland Precision Fasteners Inc (USA) |
| ST3M507-4-6 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| PBF1366-4-6 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M507-4-6 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| S11-1062-4-6 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M507-4-6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB89-4-6 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VS3038-4-6 | Howmet Global Fastening Systems Inc (USA) |
| VAL23608-4-6 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 109451-4-6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M507-4-6 PRIMARY | The Boeing Company Div Defense (USA) |
| MB89-4-6 | Hi-Shear Corporation (USA) |
| BM17019-4-6Y | Huck International, Inc (USA) |
| WC507-4-6 | West Coast Aerospace, Inc. (USA) |
| ST3M507-4-6 | Houston Precision Fasteners I Lp (USA) |
| Reference | Meaning |
|---|---|
| 109453-4-6Y | 5/9 Secondary reference U.S. Government activity |
| VS3038-4-6 | 5/9 Secondary reference U.S. Government activity |
| 109453-4-6Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 5306PL1922795 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MA5507-4-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 109451-4-6 | 5/2 Secondary reference U.S. Government activity |
| 8109451-4-6 | 5/9 Secondary reference Wilkes Co Inc the Chamfer Master Tool Div |
| BM17019-4-6Y | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-045-9540 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-045-9540 has 16 manufacturer part numbers on file: 11921-4-6 (Reid Products Inc. Dba Reid Products Inc), HP5507-4-6 (Heartland Precision Fasteners Inc), ST3M507-4-6 (Fastener Innovation Technology, Inc. Dba F I T), PBF1366-4-6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M507-4-6 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace) and 11 more.
Key specifications for ST3M507-4-6: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 0.756 INCHES MINIMUM AND 0.803 INCHES MAXIMUM IN; Shoulder Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.2802 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM FIRST SHOULDER IN. 15 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.