The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-144-2218, 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 16 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-144-2218 |
| Primary Part Number | ST3M747-10-20 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.350 INCHES NOMINAL IN |
| Fastener Length | 2.011 INCHES MINIMUM AND 2.058 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.751 INCHES MINIMUM AND 0.818 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.970 INCHES MINIMUM AND 0.978 INCHES MAXIMUM IN |
| Grip Diameter | 0.6235 INCHES MINIMUM AND 0.6240 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) |
| 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 |
|---|---|
| ST3M747-10-20 PRIMARY | The Boeing Company Div Defense (USA) |
| PBF1266-10-20 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB155-10-20 PRIMARY | Hi-Shear Corporation (USA) |
| 11833-10-20 | Reid Products Inc. Dba Reid Products Inc (USA) |
| AIC688-10-20 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB155-10-20 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VCG0002-10-20 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| S397-10-20 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 122896-10-20 | 3/2 Design control — primary reference U.S. Government activity |
| S397-10-20 | 5/9 Secondary reference U.S. Government activity |
| VS3191-10-20 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| VS3191-10-20 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-144-2218 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-144-2218 has 7 manufacturer part numbers on file: ST3M747-10-20 (The Boeing Company Div Defense), PBF1266-10-20 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), MB155-10-20 (Hi-Shear Corporation), 11833-10-20 (Reid Products Inc. Dba Reid Products Inc), AIC688-10-20 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 2 more.
Key specifications for ST3M747-10-20: Head Height: 0.350 INCHES NOMINAL IN; Fastener Length: 2.011 INCHES MINIMUM AND 2.058 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.751 INCHES MINIMUM AND 0.818 INCHES MAXIMUM IN. 16 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.