The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-321-9350, 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 14 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-321-9350 |
| Primary Part Number | ST3M453-7-10 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Fastener Length | 1.208 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Thread Length | 0.573 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 08524-B-17010 MANUFACTURERS STANDARD |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.678 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| ST3M453-7-10 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M453-7-10 | Tactair Fluid Controls Inc (USA) |
| ST3M453-7-10 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M453-7-10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M453-7-10 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| 11825-7-10 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M453-7-10 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M453-7-10 | Hi-Shear Corporation (USA) |
| ST3M453-7-10 | J M Precision Inc (USA) |
| ST3M453-7-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M453-7-10 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| Reference | Meaning |
|---|---|
| US3204-7-10 | 5/9 Secondary reference U.S. Government activity |
| 109453-7-10 | 5/9 Secondary reference Sps Technologies Inc |
| VAL23029-7-10 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| MB61-7-10 | 5/9 Secondary reference Hi-Shear Corporation |
| 109453-7-10 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17019-7-10 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-321-9350 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-321-9350 has 11 manufacturer part numbers on file: ST3M453-7-10 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M453-7-10 (Tactair Fluid Controls Inc), ST3M453-7-10 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M453-7-10 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M453-7-10 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries) and 6 more.
Key specifications for ST3M453-7-10: Head Height: 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Fastener Length: 1.208 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN; Thread Length: 0.573 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.438 INCHES IN. 14 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.