The Bolt,shoulder, cataloged under National Stock Number 5306-01-044-2960, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-044-2960 |
| Primary Part Number | HP5497-3-6 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 0.690 INCHES MINIMUM AND 0.737 INCHES MAXIMUM IN |
| Shoulder Length | 0.365 INCHES MINIMUM AND 0.385 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 |
|---|---|
| ST3M497-3-6 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 11915-3-6 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HP5497-3-6 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| PBF1254-3-6 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB88-3-6 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VAL23607-3-6 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M497-3-6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M497-3-6 PRIMARY | Huck International, Inc (USA) |
| S11-1061-3-6 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB88-3-6 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| BM17019-3-6X | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M497-3-6 | 5/9 Secondary reference Sps Technologies Inc |
| ST3M497-3-6 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| BM17019-3-6X | 5/9 Secondary reference U.S. Government activity |
| 109453-3-6X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 109450-3-6 | 5/9 Secondary reference U.S. Government activity |
| VS3037-3-6 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 109453-3-6X | 5/9 Secondary reference U.S. Government activity |
| MA5497-3-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| VS3037-3-6 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-044-2960 is a Bolt,shoulder, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-2960 has 10 manufacturer part numbers on file: ST3M497-3-6 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), 11915-3-6 (Reid Products Inc. Dba Reid Products Inc), HP5497-3-6 (Heartland Precision Fasteners Inc), PBF1254-3-6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), MB88-3-6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 5 more.
Key specifications for HP5497-3-6: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 0.690 INCHES MINIMUM AND 0.737 INCHES MAXIMUM IN; Shoulder Length: 0.365 INCHES MINIMUM AND 0.385 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.