The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-357-1727, 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 13 specifications, cited from the U.S. Government catalog. The record lists 18 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-357-1727 |
| Primary Part Number | ST3M453-3-3 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 0.503 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN |
| Thread Length | 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| FIT7047-3-3 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| AIC753-3-3 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF1253-3-3 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GS1016-3-3 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| VAL23029-3-3 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| SII-1060-3-3 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M453-3-3 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| MB61-3-3 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M453-3-3 PRIMARY | The Boeing Company Div Defense (USA) |
| 11825-3-3 | Reid Products Inc. Dba Reid Products Inc (USA) |
| BM17019-3-3 | Huck International, Inc (USA) |
| ST3M453-3-3 | Houston Precision Fasteners I Lp (USA) |
| 109453-3-3 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3204-3-3 | Howmet Global Fastening Systems Inc (USA) |
| HP5453-3-3 | Heartland Precision Fasteners Inc (USA) |
| MB61-3-3 | Hi-Shear Corporation (USA) |
| WC453-3-3 | West Coast Aerospace, Inc. (USA) |
| SLB252-3-3 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| 109453-3-3 | 5/2 Secondary reference U.S. Government activity |
| BM17019-3-3 | 5/9 Secondary reference U.S. Government activity |
| US3204-3-3 | 5/9 Secondary reference U.S. Government activity |
| 109453-3-3 | 5/9 Secondary reference Sps Technologies Inc |
| HP4553-3-3 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
NSN 5306-00-357-1727 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-357-1727 has 18 manufacturer part numbers on file: FIT7047-3-3 (Fastener Innovation Technology, Inc. Dba F I T), AIC753-3-3 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF1253-3-3 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GS1016-3-3 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), VAL23029-3-3 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 13 more.
Key specifications for ST3M453-3-3: Head Height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Fastener Length: 0.503 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN; Thread Length: 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN. 13 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.