The Bolt,u, cataloged under National Stock Number 5306-00-090-1744, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Regal Air, Inc.. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-090-1744 |
| Primary Part Number | 0642133 |
| Item Name | Bolt,u |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Regal Air, Inc. |
| Status | ACTIVE |
| Inside Distance Between Shanks | 1.750 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES MINIMUM IN |
| Hardness Rating | 27.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL |
| Distance From Inside Center of Bend to Bolt End | 1.781 INCHES NOMINAL IN |
| Style Designator | SQUARE BEND |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4130 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 0642133 PRIMARY | Regal Air, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 0642133 | 5/9 Secondary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 5306-00-090-1744 is a Bolt,u, manufactured by Regal Air, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-090-1744 has 1 manufacturer part number on file: 0642133 (Regal Air, Inc.).
Key specifications for 0642133: Inside Distance Between Shanks: 1.750 INCHES NOMINAL IN; Thread Length: 0.500 INCHES MINIMUM IN; Hardness Rating: 27.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL; Distance From Inside Center of Bend to Bolt End: 1.781 INCHES NOMINAL IN. 14 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.