The Coupling,tube, cataloged under National Stock Number 4730-01-166-5837, 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 General Dynamics Land Systems Canadacorp. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-166-5837 |
| Primary Part Number | 10503171 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | General Dynamics Land Systems Canadacorp |
| Status | ACTIVE |
| Connection Style | INVERTED FLARE (TUBE) ALL ENDS |
| Nominal Overall Length | 1.000 INCHES IN |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Style Designator | RIGID, SHORT CENTER WRENCHING FACILITY |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.437 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Thread Class | 3B ALL ENDS |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| 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 |
|---|---|
| 10503171 | General Dynamics Land Systems Canadacorp (CAN) |
| Reference | Meaning |
|---|---|
| 10503171 | 3/9 Design control — primary reference Knoch Mfg Co Ltd |
| 76006422 | 5/9 Secondary reference Dana Corp Weatherhead Div |
| 76006422 | 5/9 Secondary reference Danfoss Power Solutions II, Llc |
NSN 4730-01-166-5837 is a Coupling,tube, manufactured by General Dynamics Land Systems Canadacorp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-166-5837 has 1 manufacturer part number on file: 10503171 (General Dynamics Land Systems Canadacorp).
Key specifications for 10503171: Connection Style: INVERTED FLARE (TUBE) ALL ENDS; Nominal Overall Length: 1.000 INCHES IN; Connection Type: THREADED INTERNAL TUBE ALL ENDS; Style Designator: RIGID, SHORT CENTER WRENCHING FACILITY. 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.