The Bolt,shoulder, cataloged under National Stock Number 5306-01-046-1198, 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 17 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through both NSN and commercial part number lookups. 16 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-046-1198 |
| Primary Part Number | ST3M497-3D20 |
| 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 | 1.565 INCHES MINIMUM AND 1.612 INCHES MAXIMUM IN |
| Shoulder Length | 1.240 INCHES MINIMUM AND 1.260 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 |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN |
| 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) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.444 INCHES MINIMUM AND 1.501 INCHES MAXIMUM FIRST HOLE IN |
| 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 |
|---|---|
| ST3M497-3D20 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M497-3D20 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M497-3D20 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M497-3D20 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M497-3D20 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M497-3D20 | J M Precision Inc (USA) |
| ST3M497-3D20 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M497-3D20 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M497-3D20 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| BM17019-3D20X | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| VAL23607-3D20 | 5/1 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| BM17019-3D20X | 5/9 Secondary reference U.S. Government activity |
| 109450-3D20 | 5/1 Secondary reference U.S. Government activity |
| ST3M497-3D20 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| ST3M497-3D20 | 5/2 Secondary reference U.S. Government activity |
| S11-1061-3D2D | 5/1 Secondary reference Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries |
| 109453-3D20X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| VS3037-3D20 | 5/9 Secondary reference U.S. Government activity |
| MB88-3D20 | 5/1 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| VS3037-3D20 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| MA5497-3D20 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 109453-3D20X | 5/9 Secondary reference U.S. Government activity |
| ST3M497 | D/9 Drawing number reference only The Boeing Company Div Defense |
| PBF1254-3D20 | 5/1 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| MB88-3D20 | 5/1 Secondary reference Hi-Shear Corporation |
NSN 5306-01-046-1198 is a Bolt,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-046-1198 has 9 manufacturer part numbers on file: ST3M497-3D20 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M497-3D20 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M497-3D20 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M497-3D20 (The Boeing Company Div Defense), ST3M497-3D20 (Sps Technologies, Llc Dba PB Fasteners) and 4 more.
3 possible matches (shared part number, not a government interchangeability claim): 5306-01-475-2169, 5306-01-475-2619, 5306-01-475-2628. Verify interchangeability with system specifications before substitution.
Key specifications for ST3M497-3D20: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 1.565 INCHES MINIMUM AND 1.612 INCHES MAXIMUM IN; Shoulder Length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.202 INCHES MINIMUM AND 0.203 INCHES MAXIMUM FIRST SHOULDER IN. 17 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.