The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-660-0122, 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 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-660-0122 |
| Primary Part Number | ST3M747-6-9 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 1.0625 INCHES MINIMUM AND 1.1095 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2700,METHOD 1 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.516 INCHES NOMINAL IN |
| Material Document and Classification | PH13-8MO CRES PER 23-112,TYPE B MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.3750 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-747 MANUFACTURERS STANDARD |
| Grip Length | 0.5525 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.582 INCHES NOMINAL IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| 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 |
|---|---|
| S397-6-9 | Huck International, Inc (USA) |
| MB155-6-9 | Hi-Shear Corporation (USA) |
| VCG0002-6-9 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M747-6-9 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 122896-6-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC688-6-9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HP7747-6-9 | Heartland Precision Fasteners Inc (USA) |
| PBF1266-6-9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M747-6-9 PRIMARY | The Boeing Company Div Defense (USA) |
| GS1031-6-9 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M747-6-9 | Houston Precision Fasteners I Lp (USA) |
| SLB254-6-9 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| VS3191-6-9 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 122896-6-9 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-660-0122 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-660-0122 has 13 manufacturer part numbers on file: S397-6-9 (Huck International, Inc), MB155-6-9 (Hi-Shear Corporation), VCG0002-6-9 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M747-6-9 (Fastener Innovation Technology, Inc. Dba F I T), 122896-6-9 (Sps Technologies, Llc Dba PB Fasteners) and 8 more.
Key specifications for ST3M747-6-9: Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 1.0625 INCHES MINIMUM AND 1.1095 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2700,METHOD 1 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.516 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.