The Flange,pipe, cataloged under National Stock Number 4730-01-185-8138, 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 Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-185-8138 |
| Primary Part Number | 999R0142 PIECE 100 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Face Seating Surface Condition | GROUND |
| Nominal Pipe Size for Which Designed | 0.500 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT WATER DEGF |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | PLAIN FACE, BRAZING NECK |
| Style Designator | ROUND, NO BOLT HOLES |
| Material Document and Classification | FED-STD-151 FED STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 81349-MIL-F-20042C GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | PR TYPE |
| Precious Material and Location | BRAZING RING SILVER |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 999R0142 PIECE 100 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| CS4730-0108A025GJ | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| 999R0142 | D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps |
| MIL-PRF-20042 | 4/1 Identification reference U.S. Government activity |
| MIL-F-20042 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-185-8138 is a Flange,pipe, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-185-8138 has 2 manufacturer part numbers on file: 999R0142 PIECE 100 (Circor Naval Solutions Llc Dba Warren Pumps), CS4730-0108A025GJ (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-185-9565. Verify interchangeability with system specifications before substitution.
Key specifications for 999R0142 PIECE 100: Face Seating Surface Condition: GROUND; Nominal Pipe Size for Which Designed: 0.500 INCHES IN; Maximum Operating Temp and Media for Which Designed: 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT WATER DEGF; Operating Pressure and Type: 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS. 11 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.