The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-589-7704, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. Government technical data includes 26 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-589-7704 |
| Primary Part Number | 494D7 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.426 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Fifth Diameter | 1.000 INCHES NOMINAL IN |
| Head Height | 0.344 INCHES NOMINAL IN |
| Thread Length | 0.900 INCHES MINIMUM AND 0.960 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| First Diameter From Head | 0.494 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.400 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 0.600 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.387 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN |
| Width Between Flats | 0.741 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.300 INCHES NOMINAL IN |
| Fifth Diameter From Head | 0.494 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 5 |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 8740 OVERALL |
| Hole Quantity | 6 |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 0.800 INCHES NOMINAL IN |
| Third Diameter From Head | 0.494 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 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 |
|---|---|
| 494D7 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
NSN 5306-00-589-7704 is a Bolt,externally Relieved Body, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-589-7704 has 1 manufacturer part number on file: 494D7 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for 494D7: Fourth Diameter From Head: 0.426 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN; Distance From Largest Bearing Surface of Head to End of Fifth Diameter: 1.000 INCHES NOMINAL IN; Head Height: 0.344 INCHES NOMINAL IN; Thread Length: 0.900 INCHES MINIMUM AND 0.960 INCHES MAXIMUM IN. 26 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.