The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-199-9594, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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. 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 | 5306-01-199-9594 |
| Primary Part Number | 5189871 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.500 INCHES NOMINAL IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 3.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C NOMINAL OVERALL |
| First Diameter From Head | 0.375 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.778 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 0.872 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.466 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Head Length | 1.000 INCHES NOMINAL IN |
| Width Between Flats | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.524 INCHES NOMINAL IN |
| Locking Feature | SLOTTED GRIP |
| Externally Relieved Body Diameter Quantity | 3 |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Chamfer Angle | 45.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 1.597 INCHES NOMINAL IN |
| Third Diameter From Head | 0.436 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 5189871 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5306-01-199-9594 is a Bolt,externally Relieved Body, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-199-9594 has 1 manufacturer part number on file: 5189871 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-267-3165. Verify interchangeability with system specifications before substitution.
Key specifications for 5189871: Fourth Diameter From Head: 0.500 INCHES NOMINAL IN; Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 3.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.