The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-357-1907, 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 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-357-1907 |
| Primary Part Number | ST3M453-9D19 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN |
| Fastener Length | 1.897 INCHES MINIMUM AND 1.944 INCHES MAXIMUM IN |
| Thread Length | 0.699 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 08524-B-17019 MANUFACTURERS STANDARD |
| Grip Length | 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN |
| Width Between Flats | 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN |
| Grip Diameter | 0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.768 INCHES MINIMUM AND 1.825 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 |
|---|---|
| VAL23029-9D19 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M453-9D19 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| 11825-9D19 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M453-9D19 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB61-9D19 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MB61-9D19 | Hi-Shear Corporation (USA) |
| ST3M453-9D19 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M453-9D19 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M453-9D19 | J M Precision Inc (USA) |
| 109453-9D19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M453-9D19 | Midwest Sealing Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| US3204-9D19 | 5/2 Secondary reference U.S. Government activity |
| 109453-9D19 | 5/9 Secondary reference Sps Technologies Inc |
| BM17019-9D19 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M453-9D19 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| BM17019-9D19 | 5/9 Secondary reference U.S. Government activity |
| ST3M453-9D19 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
NSN 5306-00-357-1907 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-357-1907 has 11 manufacturer part numbers on file: VAL23029-9D19 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M453-9D19 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), 11825-9D19 (Reid Products Inc. Dba Reid Products Inc), ST3M453-9D19 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), MB61-9D19 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 6 more.
Key specifications for ST3M453-9D19: Head Height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN; Fastener Length: 1.897 INCHES MINIMUM AND 1.944 INCHES MAXIMUM IN; Thread Length: 0.699 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.141 INCHES MINIMUM AND 0.146 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.