The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-207-5149, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Motors Corp. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-207-5149 |
| Primary Part Number | 815018 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Head Height | 0.234 INCHES NOMINAL IN |
| Fastener Length | 7.031 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES MINIMUM IN |
| First Diameter From Head | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 6.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.271 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN |
| Width Between Flats | 0.427 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.250 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 815018 | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 815018 | 5/9 Secondary reference General Motors Corp AC-Delco Div Government Order Dept |
| 815018 | C/1 Advisory reference — outside the item-of-supply concept Borgwarner Pds (anderson), L.l.c. |
| 815018 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 815018 | 3/9 Design control — primary reference General Motors Corp Delco Remy Div |
| 1600834 | 5/9 Secondary reference Ready Power Co the |
NSN 5306-00-207-5149 is a Bolt,externally Relieved Body, manufactured by General Motors Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-207-5149 has 1 manufacturer part number on file: 815018 (General Motors Corp).
1 possible match (shared part number, not a government interchangeability claim): 5999-00-242-2712. Verify interchangeability with system specifications before substitution.
Key specifications for 815018: Head Height: 0.234 INCHES NOMINAL IN; Fastener Length: 7.031 INCHES NOMINAL IN; Thread Length: 0.750 INCHES MINIMUM IN; First Diameter From Head: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM 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.