The Bolt,shoulder, cataloged under National Stock Number 5306-01-044-6540, 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 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-044-6540 |
| Primary Part Number | ST3M497-3-16 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 1.315 INCHES MINIMUM AND 1.362 INCHES MAXIMUM IN |
| Shoulder Length | 0.990 INCHES MINIMUM AND 1.010 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 |
|---|---|
| ST3M497-3-16 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M497-3-16 | Trikorium Corp (USA) |
| ST3M497-3-16 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M497-3-16 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M497-3-16 | Howmet Global Fastening Systems Inc (USA) |
| ST3M497-3-16 | Heartland Precision Fasteners Inc (USA) |
| ST3M497-3-16 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M497-3-16 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M497-3-16 | Hi-Shear Corporation (USA) |
| ST3M497-3-16 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| HP5497-3-16 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| PBF1254-3-16 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| VS3037-3-16 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| ST3M497-3-16 | 5/2 Secondary reference U.S. Government activity |
| MB88-3-16 | 5/9 Secondary reference Hi-Shear Corporation |
| 109453-3-16X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 109450-3-16 | 5/9 Secondary reference U.S. Government activity |
| 109453-3-16X | 5/9 Secondary reference U.S. Government activity |
| S11-1061-3-16 | 5/9 Secondary reference Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries |
| ST3M497-3-16 | 5/9 Secondary reference Sps Technologies Inc |
| BM17019-3-16X | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| MA5497-3-16 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| VS3037-3-16 | 5/9 Secondary reference U.S. Government activity |
| VAL23607-3-16 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| BM17019-3-16X | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-044-6540 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-6540 has 10 manufacturer part numbers on file: ST3M497-3-16 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M497-3-16 (Trikorium Corp), ST3M497-3-16 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M497-3-16 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M497-3-16 (Howmet Global Fastening Systems Inc) and 5 more.
Key specifications for ST3M497-3-16: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 1.315 INCHES MINIMUM AND 1.362 INCHES MAXIMUM IN; Shoulder Length: 0.990 INCHES MINIMUM AND 1.010 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.