The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-357-1901, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-357-1901 |
| Primary Part Number | 109453-6D61 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Fastener Length | 4.312 INCHES MINIMUM AND 4.359 INCHES MAXIMUM IN |
| Thread Length | 0.490 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 08524-B-17019 MANUFACTURERS STANDARD |
| Grip Length | 3.802 INCHES MINIMUM AND 3.822 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.187 INCHES MINIMUM AND 4.244 INCHES MAXIMUM 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 |
|---|---|
| 11825-6D61 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M453-6D61 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 109453-6D61 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M453-6D61 | The Boeing Company Div Defense (USA) |
| GS1016-6D61 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M453-6D61 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB61-6D61 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| VAL23029-6D61 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BM1719-6D61 PRIMARY | Huck International, Inc (USA) |
| ST3M453-6D61 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M453-6D61 | J M Precision Inc (USA) |
| MB61-6D61 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| ST3M453-6D61 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| BM17019-6D61 | 5/9 Secondary reference U.S. Government activity |
| US3204-6D61 | 3/2 Design control — primary reference U.S. Government activity |
| 109453-6D61 | 5/9 Secondary reference Sps Technologies Inc |
| ST3M453-6D61 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
NSN 5306-00-357-1901 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-357-1901 has 12 manufacturer part numbers on file: 11825-6D61 (Reid Products Inc. Dba Reid Products Inc), ST3M453-6D61 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 109453-6D61 (Sps Technologies, Llc Dba PB Fasteners), ST3M453-6D61 (The Boeing Company Div Defense), GS1016-6D61 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace) and 7 more.
Key specifications for 109453-6D61: Head Height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Fastener Length: 4.312 INCHES MINIMUM AND 4.359 INCHES MAXIMUM IN; Thread Length: 0.490 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE 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.