The Bolt,shoulder, cataloged under National Stock Number 5306-01-044-6539, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. 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through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-044-6539 |
| Primary Part Number | BM17019-3-12X |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 1.065 INCHES MINIMUM AND 1.112 INCHES MAXIMUM IN |
| Shoulder Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.202 INCHES MINIMUM AND 0.203 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-497 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| BM17019-3-12X PRIMARY | Huck International, Inc (USA) |
| ST3M497-3-12 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| ST3M497-3-12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| S11-1061-3-12 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M497-3-12 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| PBF1254-3-12 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11915-3-12 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| VAL23607-3-12 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB88-3-12 PRIMARY | Hi-Shear Corporation (USA) |
| HP5497-3-12 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| WC497-3-12 PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M497-3-12 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M497-3-12 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M497-3-12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BM17019-3-12X | 5/9 Secondary reference U.S. Government activity |
| MB88-3-12 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| 109453-3-12X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 109450-3-12 | 3/2 Design control — primary reference U.S. Government activity |
| VS3037-3-12 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| ST3M497-3-12 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| VS3037-3-12 | 5/9 Secondary reference U.S. Government activity |
| 109453-3-12X | 5/9 Secondary reference U.S. Government activity |
| ST3M497-3-12 | 5/9 Secondary reference J M Precision Inc |
| MA5497-3-12 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| ST3M497-3-12 | 5/2 Secondary reference U.S. Government activity |
| ST3M497-3-12 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
NSN 5306-01-044-6539 is a Bolt,shoulder, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-6539 has 14 manufacturer part numbers on file: BM17019-3-12X (Huck International, Inc), ST3M497-3-12 (Houston Precision Fasteners I Lp), ST3M497-3-12 (Sps Technologies, Llc Dba PB Fasteners), S11-1061-3-12 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M497-3-12 (Fastener Innovation Technology, Inc. Dba F I T) and 9 more.
Key specifications for BM17019-3-12X: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 1.065 INCHES MINIMUM AND 1.112 INCHES MAXIMUM IN; Shoulder Length: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.202 INCHES MINIMUM AND 0.203 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.