The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-059-1205, 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 19 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-059-1205 |
| Primary Part Number | 3M33-3H2 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.531 INCHES NOMINAL IN |
| Thread Length | 0.406 INCHES MINIMUM IN |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.125 INCHES NOMINAL IN |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Grip Diameter | 0.1889 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.046 INCHES NOMINAL 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 |
|---|---|
| 3M33-3H2 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M33-3H2 | Huck International, Inc (USA) |
| 3M33-3H2 | Federal Manufacturing Corp (USA) |
| 3M33-3H2 | Howmet Global Fastening Systems Inc (USA) |
| 3M33-3H2 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| 3M33-3H2 | 5/9 Secondary reference Newport Aeronautical Sales |
| 3M33-3H2 | 5/2 Secondary reference U.S. Government activity |
| 3M33-3H2 | C/1 Advisory reference — outside the item-of-supply concept Grimes Aerospace Company |
| 3M33-3H2 | 5/2 Secondary reference U.S. Government activity |
| 3M33-3H2 | 5/2 Secondary reference U.S. Government activity |
| 3M33-3H2 | 5/9 Secondary reference U.S. Government activity |
| 3M33-3H2 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-059-1205 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-059-1205 has 5 manufacturer part numbers on file: 3M33-3H2 (The Boeing Company Div Defense), 3M33-3H2 (Huck International, Inc), 3M33-3H2 (Federal Manufacturing Corp), 3M33-3H2 (Howmet Global Fastening Systems Inc), 3M33-3H2 (Valley-Todeco, Inc. Dba Arconic Fastening Systems).
Key specifications for 3M33-3H2: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 0.531 INCHES NOMINAL IN; Thread Length: 0.406 INCHES MINIMUM IN. 19 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.