The Bolt,shoulder, cataloged under National Stock Number 5306-01-044-2974, 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 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-044-2974 |
| Primary Part Number | BM17019-5-6X |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 0.826 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN |
| Shoulder Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.327 INCHES MINIMUM AND 0.328 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-ST3-497 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 |
|---|---|
| BM17019-5-6X PRIMARY | Huck International, Inc (USA) |
| S11-1061-5-6 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB88-5-6 PRIMARY | Hi-Shear Corporation (USA) |
| HP5497-5-6 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| MB88-5-6 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| PBF1254-5-6 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M497-5-6 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| VS3037-5-6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| VAL23607-5-6 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| MA5497-5-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 109453-5-6X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M497-5-6 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 109450-5-6 | 3/2 Design control — primary reference U.S. Government activity |
| 109453-5-6X | 5/9 Secondary reference U.S. Government activity |
| VS3037-5-6 | 5/9 Secondary reference U.S. Government activity |
| BM17019-5-6X | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-044-2974 is a Bolt,shoulder, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-2974 has 9 manufacturer part numbers on file: BM17019-5-6X (Huck International, Inc), S11-1061-5-6 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), MB88-5-6 (Hi-Shear Corporation), HP5497-5-6 (Heartland Precision Fasteners Inc), MB88-5-6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 4 more.
Key specifications for BM17019-5-6X: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 0.826 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN; Shoulder Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.327 INCHES MINIMUM AND 0.328 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.