The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-472-5160, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 27 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-472-5160 |
| Primary Part Number | HS6033-6-26 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Head Height | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.564 INCHES MINIMUM AND 0.632 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| FTC7812-6-26 | Fastener Technology Corp (USA) |
| ST3M453-6-26 | The Boeing Company Div Defense (USA) |
| GS1016-6-26 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| HS6033-6-26 PRIMARY | The Boeing Company (USA) |
| HS6033-6-26 | Acufast Aircraft Products (USA) |
| Reference | Meaning |
|---|---|
| MB61-6-26 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| ST3M453-6-26 | 5/9 Secondary reference Huck International, Inc |
| ST3M453-6-26 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| WC453-6-26 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HP5453-6-26 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| ST3M453-6-26 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| ST3M453-6-26 | 5/9 Secondary reference Hi-Shear Corporation |
| VS3204-6-26 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 109453-6-26 | 5/2 Secondary reference U.S. Government activity |
| MB61-6-26 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M453-6-26 | 5/9 Secondary reference Houston Precision Fasteners I Lp |
| ST3M453-6-26 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| FIT7047-6-26 | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| ST3M453-6-26 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| ST3M453-6-26 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| S11-1060-6-26 | 5/9 Secondary reference Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries |
| ST3M453-6-26 | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| PBF1253-6-26 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| 11825-6-26 | 5/9 Secondary reference Reid Products Inc. Dba Reid Products Inc |
| BM17019-6-26 | 5/9 Secondary reference Huck International, Inc |
NSN 5306-01-472-5160 is a Bolt,close Tolerance, manufactured by The Boeing Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-472-5160 has 5 manufacturer part numbers on file: FTC7812-6-26 (Fastener Technology Corp), ST3M453-6-26 (The Boeing Company Div Defense), GS1016-6-26 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), HS6033-6-26 (The Boeing Company), HS6033-6-26 (Acufast Aircraft Products).
Key specifications for HS6033-6-26: Head Height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN; Head Style: DOUBLE HEXAGON; Thread Direction: RIGHT-HAND. 9 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.