The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-135-5508, 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 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-135-5508 |
| Primary Part Number | ST3M453-7D15 |
| 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 | 1.521 INCHES MINIMUM AND 1.568 INCHES MAXIMUM IN |
| Thread Length | 0.573 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN |
| Width Between Flats | 0.678 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4670 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.400 INCHES MINIMUM AND 1.457 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 |
|---|---|
| GS1016-7D15 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| PBF1253-7D15 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M453-7D15 PRIMARY | The Boeing Company Div Defense (USA) |
| VAL23029-7D15 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| S353-7D15 PRIMARY | Huck International, Inc (USA) |
| AIC753-7D15 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB61-7D15 | Hi-Shear Corporation (USA) |
| 11825-7D15 | Reid Products Inc. Dba Reid Products Inc (USA) |
| MB61-7D15 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M453-7D15 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M453-7D15 | Heartland Precision Fasteners Inc (USA) |
| S11-1060-7D15 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| BM17019-7D15 PRIMARY | Huck International, Inc (USA) |
| VS3204-7D15 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| FIT7047-7D15 | C/1 Advisory reference — outside the item-of-supply concept Fastener Innovation Technology, Inc. Dba F I T |
| 109453-7D15 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M453-7D15 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| KS3020-7D15 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| VS3204-7D15 | 5/9 Secondary reference U.S. Government activity |
| BM17019-7D15 | 5/9 Secondary reference U.S. Government activity |
| ST3M453-7D15 | 5/9 Secondary reference M P Pumps Inc |
| S353-7D15 | 5/9 Secondary reference U.S. Government activity |
| 109453-7D15 | 5/2 Secondary reference U.S. Government activity |
| HP5453-7D15 | C/1 Advisory reference — outside the item-of-supply concept Heartland Precision Fasteners Inc |
| MA5453-7D15 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 10115941 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5306-01-135-5508 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-135-5508 has 14 manufacturer part numbers on file: GS1016-7D15 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), PBF1253-7D15 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M453-7D15 (The Boeing Company Div Defense), VAL23029-7D15 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), S353-7D15 (Huck International, Inc) and 9 more.
Key specifications for ST3M453-7D15: Head Height: 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Fastener Length: 1.521 INCHES MINIMUM AND 1.568 INCHES MAXIMUM IN; Thread Length: 0.573 INCHES MINIMUM AND 0.640 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.