The Bolt,shoulder, cataloged under National Stock Number 5306-01-046-2018, 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 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-046-2018 |
| Primary Part Number | ST3M507-5-8 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 0.951 INCHES MINIMUM AND 0.998 INCHES MAXIMUM IN |
| Shoulder Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-507 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| ST3M507-5-8 | Huck International, Inc (USA) |
| ST3M507-5-8 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M507-5-8 | Howmet Global Fastening Systems Inc (USA) |
| ST3M507-5-8 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M507-5-8 | Hi-Shear Corporation (USA) |
| ST3M507-5-8 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M507-5-8 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M507-5-8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M507-5-8 | West Coast Aerospace, Inc. (USA) |
| ST3M507-5-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M507-5-8 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M507-5-8 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M507-5-8 | Heartland Precision Fasteners Inc (USA) |
| ST3M507-5-8 | Houston Precision Fasteners I Lp (USA) |
| Reference | Meaning |
|---|---|
| MB89-5-8 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| VS3038-5-8 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| ST3M507-5-8 | 5/2 Secondary reference U.S. Government activity |
| 109453-5-8Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M507-5-8 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| ST3M507-5-8 | 5/2 Secondary reference U.S. Government activity |
| ST3M507-5-8 | 5/9 Secondary reference Mecair Aerospace Industries Inc Sub of Mecair Inc |
| VAL23608-5-& | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| MB89-5-8 | 5/9 Secondary reference Hi-Shear Corporation |
| 109453-5-8Y | 5/9 Secondary reference U.S. Government activity |
| BM17019-5-8Y | 5/9 Secondary reference U.S. Government activity |
| VS3038-5-8 | 5/9 Secondary reference U.S. Government activity |
| BM17019-5-8Y | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-046-2018 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-046-2018 has 14 manufacturer part numbers on file: ST3M507-5-8 (Huck International, Inc), ST3M507-5-8 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M507-5-8 (Howmet Global Fastening Systems Inc), ST3M507-5-8 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M507-5-8 (Hi-Shear Corporation) and 9 more.
Key specifications for ST3M507-5-8: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 0.951 INCHES MINIMUM AND 0.998 INCHES MAXIMUM IN; Shoulder Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.3427 INCHES MINIMUM AND 0.3432 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.