The Flange,pipe, cataloged under National Stock Number 4730-01-318-4157, 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 Derbyshire Machine & Tool Co. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-318-4157 |
| Primary Part Number | 4687676-B8AG |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Nominal Pipe Size for Which Designed | 0.500 INCHES IN |
| Operating Pressure and Type | 700.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Material | COPPER ALLOY AND NICKEL 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 |
|---|---|
| 4687676-B8AG PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 704-4685289 | D/9 Drawing number reference only U.S. Government activity |
| 704-4685289 ITEM F9 | 5/2 Secondary reference U.S. Government activity |
| 4687676-B8AG | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-318-4157 is a Flange,pipe, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-318-4157 has 1 manufacturer part number on file: 4687676-B8AG (Derbyshire Machine & Tool Co).
Key specifications for 4687676-B8AG: Nominal Pipe Size for Which Designed: 0.500 INCHES IN; Operating Pressure and Type: 700.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS; Special Features: FLANGE 0.250IN. THICK; SOCKET WELD,RED; 0.023 RF ORVD IN; End Item Identification: WEAPONS SYSTEM 23N,SSBN TRIDENT CLASS. 3 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.