The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-057-2127, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-057-2127 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 1.247 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC 2ND TREATMENT RESPONSE |
| Body Style | PLAIN |
| First End Thread Class | 3A A |
| Cotter Pin Hole Diameter | 0.060 INCHES NOMINAL IN |
| First End Thread Quantity Per Inch | 20 |
| Concentric Hole Depth | 1.180 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.167 INCHES MINIMUM AND 0.207 INCHES MAXIMUM IN |
| First End Thread Length | 0.423 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Wrenching Feature Style | HEXAGON |
| Material Document and Classification | AMS5659 15-5PH ASSN STD SINGLE MATERIAL RESPONSE |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 1.595 INCHES MINIMUM AND 1.615 INCHES MAXIMUM IN |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.600 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.234 INCHES NOMINAL IN |
| Distance From Bolt End to Hole Center | 1.680 INCHES MINIMUM AND 1.700 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OR CADMIUM |
| First Radial Fluid Hole Diameter | 0.219 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.980 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| First Diameter From Wrenching Feature | 0.494 INCHES MINIMUM AND 0.496 INCHES MAXIMUM IN |
| First End Nominal Thread Size | 0.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 41003746 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-057-2127 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-057-2127: First End Thread Series Designator: UNF; Width Across Flats: 0.750 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Length From Bearing Surface of Wrenching Feature to End of First Diameter: 1.247 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN. 25 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.