The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-077-1768, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Brp Us Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-077-1768 |
| Primary Part Number | 308186 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Brp Us Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.090 INCHES NOMINAL IN |
| Head Height | 0.287 INCHES NOMINAL IN |
| Fastener Length | 0.875 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.430 INCHES NOMINAL IN |
| Thread Length | 0.320 INCHES NOMINAL IN |
| First Diameter From Head | 0.248 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.337 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.555 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL 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 |
|---|---|
| 308186 PRIMARY | Brp Us Inc (USA) |
| Reference | Meaning |
|---|---|
| 308186 | 5/9 Secondary reference U.S. Government activity |
| 308186 | 5/9 Secondary reference Outboard Marine Corp Johnson Motors Div |
| 308186 | C/1 Advisory reference — outside the item-of-supply concept Evinrude Motors Product Group of Outboard Marine Corp |
| 308186 | 5/9 Secondary reference Simpson-Lawrence Ltd Johnson and Evi Rude Outboard Motors |
NSN 5306-00-077-1768 is a Bolt,externally Relieved Body, manufactured by Brp Us Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-077-1768 has 1 manufacturer part number on file: 308186 (Brp Us Inc).
Key specifications for 308186: Extended Washer Thickness: 0.090 INCHES NOMINAL IN; Head Height: 0.287 INCHES NOMINAL IN; Fastener Length: 0.875 INCHES NOMINAL IN; Extended Washer Diameter: 0.430 INCHES NOMINAL 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.