The Tailpiece,union, cataloged under National Stock Number 4730-01-039-1986, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-039-1986 |
| Primary Part Number | 803-1385946,PC 3,1/4 NPS L1 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 0.250 INCHES IN |
| Flange Thickness | 0.195 INCHES NOMINAL IN |
| End Connection Type | BRAZED |
| Criticality Code Justification | ZZZY |
| Seat Type | STRAIGHT FACE |
| Material | COPPER ALLOY 922 |
| Flange Outside Diameter | 1.063 INCHES NOMINAL IN |
| Working Pressure and Service Type | 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER AND 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL LBS |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 803-1385946,PC 3,1/4 NPS L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| B7566.001.130L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 20257 FIND 31L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 810-1385946PC3-1/4IN-SL BRZ-L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| B7566.001.130 | 5/1 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 803-1385946,PC 3,1/4 NPS | 3/1 Design control — primary reference U.S. Government activity |
| 810-1385946PC3-1/4IN-SL-BRZ | 5/1 Secondary reference Naval Sea Systems Command |
| 20257 FIND 31 | 5/1 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4730-01-039-1986 is a Tailpiece,union, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-039-1986 has 4 manufacturer part numbers on file: 803-1385946,PC 3,1/4 NPS L1 (Naval Inventory Control Point Mechanicsburg), B7566.001.130L1 (Naval Inventory Control Point Mechanicsburg), 20257 FIND 31L1 (Naval Inventory Control Point Mechanicsburg), 810-1385946PC3-1/4IN-SL BRZ-L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 803-1385946,PC 3,1/4 NPS L1: Nominal Pipe Size Designation: 0.250 INCHES IN; Flange Thickness: 0.195 INCHES NOMINAL IN; End Connection Type: BRAZED; Criticality Code Justification: ZZZY. 9 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.