The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-067-3398, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-067-3398 |
| Primary Part Number | BM17019-4D23 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Fastener Length | 1.819 INCHES MINIMUM AND 1.866 INCHES MAXIMUM IN |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | 23-112 TY B FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.698 INCHES MINIMUM AND 1.755 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 |
|---|---|
| ST3M453-4D23 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M453-4D23 | Hi-Shear Corporation (USA) |
| AIC753-4D23 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VAL23029-4D23 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BM17019-4D23 PRIMARY | Huck International, Inc (USA) |
| ST3M453-4D23 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M453-4D23 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M453-4D23 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| S353-4D23 | Huck International, Inc (USA) |
| 11825-4D23 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M453-4D23 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| BM17019-4D23 | 5/9 Secondary reference U.S. Government activity |
| 109453-4D23 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| S353-4D23 | 5/9 Secondary reference U.S. Government activity |
| US3204-4D23 | 5/2 Secondary reference U.S. Government activity |
| ST3M453-4D23 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 109453-4D23 | 5/2 Secondary reference U.S. Government activity |
| ST3M453-4D23 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| MB61-4D23 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-067-3398 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-067-3398 has 10 manufacturer part numbers on file: ST3M453-4D23 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M453-4D23 (Hi-Shear Corporation), AIC753-4D23 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), VAL23029-4D23 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BM17019-4D23 (Huck International, Inc) and 5 more.
Key specifications for BM17019-4D23: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 1.819 INCHES MINIMUM AND 1.866 INCHES MAXIMUM IN; Thread Length: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.081 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.