The Nut,union, cataloged under National Stock Number 4730-01-252-7777, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hydrasearch Company, Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-252-7777 |
| Primary Part Number | 8307-10-SS |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Width Across Flats | 1.125 INCHES NOMINAL IN |
| Shoulder Step Width | 0.188 INCHES NOMINAL IN |
| Shoulder Width | 0.188 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNS |
| Supplementary Features | U/O CPV MARK VIII VALVE SYSTEM |
| Material Document and Classification | ASTM A276,UNS S31600 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Maximum Working Pressure Rating and Service for Which Designed | 3000.0 POUNDS PER SQUARE INCH (PSI) OIL LBS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.000 INCHES IN |
| Nut Height | 0.594 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP 316 OVERALL |
| Smallest Inside Diameter | 0.625 INCHES NOMINAL IN |
| Shoulder Seat Diameter | 0.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| 8307-10-SS PRIMARY | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 77A110686P1 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Div Rms |
| H850N-10-SS | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-252-7777 is a Nut,union, manufactured by Hydrasearch Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-252-7777 has 1 manufacturer part number on file: 8307-10-SS (Hydrasearch Company, Llc).
Key specifications for 8307-10-SS: Width Across Flats: 1.125 INCHES NOMINAL IN; Shoulder Step Width: 0.188 INCHES NOMINAL IN; Shoulder Width: 0.188 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.