The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-104-1465, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-104-1465 |
| Primary Part Number | ST3M729-5H8 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.161 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN |
| Fastener Length | 0.765 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Hole Configuration Style | DOUBLE HEXAGON FLATS |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.4840 INCHES MINIMUM AND 0.5160 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.092 INCHES MINIMUM AND 0.094 INCHES MAXIMUM 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 |
|---|---|
| MB145-5H8 | Hi-Shear Corporation (USA) |
| ST3M729-5H8 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M729-5H8 | Houston Precision Fasteners I Lp (USA) |
| ST3M729-5H8 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M729-5H8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M729-5H8 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11933-5H8 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MB145-5H8 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M729-5H8 | Huck International, Inc (USA) |
| ST3M729-5H8 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M729-5H8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M729-5H8 | Heartland Precision Fasteners Inc (USA) |
| ST3M729-5H8 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M729-5H8 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| WC729-5H8 | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| ST3M729-5H8 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M729-5H8 | 5/2 Secondary reference U.S. Government activity |
| ST3M729-5H8 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-104-1465 is a Bolt,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-104-1465 has 15 manufacturer part numbers on file: MB145-5H8 (Hi-Shear Corporation), ST3M729-5H8 (Howmet Global Fastening Systems Inc), ST3M729-5H8 (Houston Precision Fasteners I Lp), ST3M729-5H8 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), ST3M729-5H8 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 10 more.
Key specifications for ST3M729-5H8: Head Height: 0.161 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN; Fastener Length: 0.765 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL IN; Hole Configuration Style: DOUBLE HEXAGON FLATS. 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.