The Bolt,machine, cataloged under National Stock Number 5306-01-381-7338, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-381-7338 |
| Primary Part Number | 90291A537 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Head Height | 0.500 INCHES NOMINAL IN |
| Fastener Length | 9.000 INCHES NOMINAL IN |
| Thread Length | 1.250 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.220 INCHES NOMINAL THREADS IN |
| Material Document and Classification | SAE J429, GRADE 5 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 7.750 INCHES NOMINAL IN |
| Width Between Flats | 1.620 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 8.620 INCHES NOMINAL THREADS 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 |
|---|---|
| 90291A537 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| PWA70408-27 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5306-01-381-7338 is a Bolt,machine, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-381-7338 has 2 manufacturer part numbers on file: 90291A537 (Mcmaster-Carr Supply Co), PWA70408-27 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 90291A537: Head Height: 0.500 INCHES NOMINAL IN; Fastener Length: 9.000 INCHES NOMINAL IN; Thread Length: 1.250 INCHES NOMINAL IN; Shank Unthreaded Hole Diameter: 0.220 INCHES NOMINAL THREADS 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.