The Nipple,tube, cataloged under National Stock Number 4730-01-149-2013, 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 The Boeing Company Div Defense. Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-149-2013 |
| Primary Part Number | 7M637BT-6D |
| Item Name | Nipple,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Nominal Overall Length | 2.219 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | FLARED W/ BULKHEAD THREAD |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES ALL ENDS IN |
| Leg Length | 0.550 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.281 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.563 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.563 INCHES FIRST END BULKHEAD IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Surface Treatment | ALUMINUM OVERALL |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Thread Series Designator | UNF FIRST END BULKHEAD |
| 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 |
|---|---|
| 7M637BT-6D PRIMARY | The Boeing Company Div Defense (USA) |
| 7M637BT-6D | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| 7M637BT-6D | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| 7M637BT-6D | Nelson Aero Space, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 7M637BT-6D | 5/9 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
| 7M637BT-6D | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| 10108778 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4730-01-149-2013 is a Nipple,tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-149-2013 has 4 manufacturer part numbers on file: 7M637BT-6D (The Boeing Company Div Defense), 7M637BT-6D (Sps Technologies, Llc Dba Airdrome Precision Components), 7M637BT-6D (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply), 7M637BT-6D (Nelson Aero Space, Inc.).
Key specifications for 7M637BT-6D: Connection Style: FLARED (TUBE) ALL ENDS; Nominal Overall Length: 2.219 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST END BULKHEAD; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 17 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.