The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-024-2461, 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 17 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-024-2461 |
| Primary Part Number | ST3M453-5D25 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 2.013 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN |
| Thread Length | 0.440 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 08524-B-17019 MANUFACTURERS STANDARD |
| Grip Length | 1.553 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.889 INCHES MINIMUM AND 1.946 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 |
|---|---|
| BM17019-5D25 | Huck International, Inc (USA) |
| FIT7047-5D25 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M453-5D25 PRIMARY | The Boeing Company Div Defense (USA) |
| 109453-5D25 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MB61-5D25 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HP5453-5D25 | Heartland Precision Fasteners Inc (USA) |
| AIC753-5D25 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF1253-5D25 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11825-5D25 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VAL23029-5D25 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M453-5D25 | Houston Precision Fasteners I Lp (USA) |
| VS3204-5D25 | Howmet Global Fastening Systems Inc (USA) |
| MB61-5D25 | Hi-Shear Corporation (USA) |
| S11-1060-5D25 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| GS1016-5D25 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| SLB252-5D25 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| WC453-5D25 | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 109453-5D25 | 5/2 Secondary reference U.S. Government activity |
| BM17019-5D25 | 5/9 Secondary reference U.S. Government activity |
| US3204-5D25 | 5/9 Secondary reference U.S. Government activity |
| KS3020-5D25 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
NSN 5306-01-024-2461 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-024-2461 has 17 manufacturer part numbers on file: BM17019-5D25 (Huck International, Inc), FIT7047-5D25 (Fastener Innovation Technology, Inc. Dba F I T), ST3M453-5D25 (The Boeing Company Div Defense), 109453-5D25 (Sps Technologies, Llc Dba PB Fasteners), MB61-5D25 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 12 more.
Key specifications for ST3M453-5D25: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 2.013 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN; Thread Length: 0.440 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN. 17 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.