The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-286-8473, 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 18 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through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-286-8473 |
| Primary Part Number | ST3M747-9D43 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.328 INCHES NOMINAL IN |
| Fastener Length | 3.397 INCHES MINIMUM AND 3.444 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.725 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.678 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.908 INCHES NOMINAL IN |
| Grip Diameter | 0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.564 INCHES NOMINAL 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 |
|---|---|
| ST3M747-9D43 | Hi-Shear Corporation (USA) |
| ST3M747-9D43 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M747-9D43 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M747-9D43 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M747-9D43 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M747-9D43 | Huck International, Inc (USA) |
| ST3M747-9D43 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| AIC688-9D43 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| ST3M747-9D43 | 5/2 Secondary reference U.S. Government activity |
| S397-9D43 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 122896-9D43 | 5/9 Secondary reference U.S. Government activity |
| S397-9D43 | 5/9 Secondary reference U.S. Government activity |
| PBF 1266-9D43 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| VS3191-9D43 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| VS3191-9D43 | 5/9 Secondary reference U.S. Government activity |
| MB155-9D43 | 5/9 Secondary reference Hi-Shear Corporation |
| VCG0002-9D43 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| ST3M747-9D43 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-286-8473 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-286-8473 has 7 manufacturer part numbers on file: ST3M747-9D43 (Hi-Shear Corporation), ST3M747-9D43 (The Boeing Company Div Defense), ST3M747-9D43 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M747-9D43 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M747-9D43 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 2 more.
Key specifications for ST3M747-9D43: Head Height: 0.328 INCHES NOMINAL IN; Fastener Length: 3.397 INCHES MINIMUM AND 3.444 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.725 INCHES NOMINAL IN. 18 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.