The Bolt,shoulder, cataloged under National Stock Number 5306-01-044-8494, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-044-8494 |
| Primary Part Number | ST3M497-3-20 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| 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 |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| 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 |
|---|---|
| ST3M497-3-20 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MA5497-3-20 | Abounding Security Inc Div of Maa Corp (USA) |
| MA497-3-20 | Abounding Security Inc Div of Maa Corp (USA) |
| ST3M497-3-20 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M497-3-20 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M497-3-20 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M497-3-20 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M497-3-20 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M497-3-20 PRIMARY | Huck International, Inc (USA) |
| ST3M497-3-20 | The Boeing Company Div Defense (USA) |
| ST3M497-3-20 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M497-3-20 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| BM17019-3-20X | 5/9 Secondary reference U.S. Government activity |
| MB88-3-20 | 5/9 Secondary reference Hi-Shear Corporation |
| HP5497-3-20 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| 109450-3-20 | 5/9 Secondary reference U.S. Government activity |
| S11-1061-3-20 | 5/9 Secondary reference Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries |
| VS3037-3-20 | 5/9 Secondary reference U.S. Government activity |
| 109453-3-20X | 5/9 Secondary reference U.S. Government activity |
| ST3M497-3-20 | 5/9 Secondary reference Sps Technologies Inc |
| VAL23607-3-20 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| PBF1254-3-20 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| 109453-3-20X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17019-3-20X | 5/9 Secondary reference Huck International, Inc |
| ST3M497-3-20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-044-8494 is a Bolt,shoulder, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-044-8494 has 12 manufacturer part numbers on file: ST3M497-3-20 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), MA5497-3-20 (Abounding Security Inc Div of Maa Corp), MA497-3-20 (Abounding Security Inc Div of Maa Corp), ST3M497-3-20 (Heartland Precision Fasteners Inc), ST3M497-3-20 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries) and 7 more.
Key specifications for ST3M497-3-20: 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. 14 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.