The Coupling,tube, cataloged under National Stock Number 4730-00-901-3687, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-901-3687 |
| Primary Part Number | 810-1385944PC3,SIZE 1/4 INCHL1 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Connection Style | REDUCED SOCKET W/ GROOVE (PIPE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.036 INCHES FIRST END IN |
| Nominal Overall Length | 0.904 INCHES IN |
| Criticality Code Justification | ZZZY |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Style Designator | BEVELED BOTH ENDS |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.252 INCHES FIRST END IN |
| Material | COPPER ALLOY OVERALL |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 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 |
|---|---|
| 810-1385944PC3,SIZE 1/4 INCHL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 810-1385944PC3,SIZE 1/4 INCH | 5/1 Secondary reference U.S. Government activity |
| 810-1385944PC3 | 3/1 Design control — primary reference U.S. Government activity |
| 810-1385944PC3L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4730-00-901-3687 is a Coupling,tube, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-901-3687 has 1 manufacturer part number on file: 810-1385944PC3,SIZE 1/4 INCHL1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 810-1385944PC3,SIZE 1/4 INCHL1: Connection Style: REDUCED SOCKET W/ GROOVE (PIPE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.036 INCHES FIRST END IN; Nominal Overall Length: 0.904 INCHES IN; Criticality Code Justification: ZZZY. 10 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.