The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-616-5648, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-616-5648 |
| Primary Part Number | 40-3093301A |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Extended Washer Thickness | 0.147 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Head Height | 0.430 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.644 INCHES MINIMUM AND 0.654 INCHES MAXIMUM IN |
| Thread Length | 0.880 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM OVERALL |
| First Diameter From Head | 0.352 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.432 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.620 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Minimum Tensile Strength | 170000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4037 OR STEEL COMP 4042 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 |
|---|---|
| 40-3093301A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 40-3093301A | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 5306-00-616-5648 is a Bolt,externally Relieved Body, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-616-5648 has 1 manufacturer part number on file: 40-3093301A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 40-3093301A: Extended Washer Thickness: 0.147 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN; Head Height: 0.430 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN; Fastener Length: 1.500 INCHES NOMINAL IN; Extended Washer Diameter: 0.644 INCHES MINIMUM AND 0.654 INCHES MAXIMUM 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.