The Bolt,machine, cataloged under National Stock Number 5306-01-475-2628, 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 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-475-2628 |
| Primary Part Number | ST3M497-5-27 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 2.139 INCHES MINIMUM AND 2.186 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.487 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN |
| Width Between Flats | 0.502 INCHES NOMINAL IN |
| Grip Diameter | 0.3271 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 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 |
|---|---|
| ST3M497-5-27 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M497-5-27 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M497-5-27 | Heartland Precision Fasteners Inc (USA) |
| ST3M497-5-27 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M497-5-27 | Hi-Shear Corporation (USA) |
| ST3M497-5-27 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M497-5-27 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST3M497 | D/9 Drawing number reference only The Boeing Company Div Defense |
| ST3M497-5-27 | 5/2 Secondary reference U.S. Government activity |
| ST3M497-5-27 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-475-2628 is a Bolt,machine, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-475-2628 has 7 manufacturer part numbers on file: ST3M497-5-27 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M497-5-27 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M497-5-27 (Heartland Precision Fasteners Inc), ST3M497-5-27 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M497-5-27 (Hi-Shear Corporation) and 2 more.
Key specifications for ST3M497-5-27: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 2.139 INCHES MINIMUM AND 2.186 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.487 INCHES NOMINAL 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.