The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-166-4533, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Plc Div Defense (europe). Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-166-4533 |
| Primary Part Number | BLT5018 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rolls-Royce Plc Div Defense (europe) |
| Status | ACTIVE |
| Head Height | 0.156 INCHES NOMINAL IN |
| Fastener Length | 1.141 INCHES NOMINAL IN |
| Thread Length | 0.659 INCHES NOMINAL IN |
| First Diameter From Head | 0.210 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.240 INCHES NOMINAL IN |
| Width Between Flats | 0.439 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| BLT5018 PRIMARY | Rolls-Royce Plc Div Defense (europe) (GBR) |
| Reference | Meaning |
|---|---|
| 99-781-1467 | 6/9 Informative reference only U.S. Government activity |
NSN 5306-01-166-4533 is a Bolt,externally Relieved Body, manufactured by Rolls-Royce Plc Div Defense (europe), classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-166-4533 has 1 manufacturer part number on file: BLT5018 (Rolls-Royce Plc Div Defense (europe)).
Key specifications for BLT5018: Head Height: 0.156 INCHES NOMINAL IN; Fastener Length: 1.141 INCHES NOMINAL IN; Thread Length: 0.659 INCHES NOMINAL IN; First Diameter From Head: 0.210 INCHES NOMINAL IN. 14 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.