The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-126-8445, 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 Danfoss Power Solutions II, Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-126-8445 |
| Primary Part Number | W17691 |
| Item Name | Adapter,straight,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Danfoss Power Solutions II, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 SHORT COUPLING NUT |
| Nominal Pipe Size Accommodated | 0.500 INCHES SECOND END IN |
| Connection Style | COMPRESSION (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Seat Nominal Radius | 0.050 INCHES FIRST END IN |
| Nominal Overall Length | 1.510 INCHES IN |
| Nominal Outside Diameter Tube Accommodated | 0.688 INCHES FIRST END IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Reduced Passage Nominal Inside Diameter | 0.406 INCHES FIRST END IN |
| Nominal Thread Size | 0.687 INCHES FIRST END IN |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Maximum Operating Temp | -65.0 CELSIUS FIRST RESPONSE DEGC |
| Maximum Operating Temp | 250.0 CELSIUS SECOND RESPONSE DEGC |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | COPPER ALLOY 345 OR COPPER ALLOY 360 OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | NPT SECOND END |
| 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 |
|---|---|
| W17691 PRIMARY | Danfoss Power Solutions II, Llc (USA) |
| 217691N PRIMARY | Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA) |
| 415934 | Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA) |
| H0-168-8X8 PRIMARY | Velvac Inc (USA) |
| Reference | Meaning |
|---|---|
| W17691 | 5/9 Secondary reference Dana Corp Weatherhead Div |
| 52766 | 5/9 Secondary reference U.S. Government activity |
| 41X321 | 5/9 Secondary reference Haldex Brake Products Corporation |
| 68AB-8-8 | 3/2 Design control — primary reference U.S. Government activity |
| VS68AB-8-8 | 3/2 Design control — primary reference U.S. Government activity |
| 217691 | 5/9 Secondary reference Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems |
| 468-F-08X08 | 5/9 Secondary reference Imperial |
| 95552R11 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 95552R11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-126-8445 is a Adapter,straight,pipe to Tube, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-126-8445 has 4 manufacturer part numbers on file: W17691 (Danfoss Power Solutions II, Llc), 217691N (Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems), 415934 (Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)), H0-168-8X8 (Velvac Inc).
3 possible matches (shared part number, not a government interchangeability claim): 5365-00-234-7858, 2810-00-306-5956, 5935-01-483-7560. Verify interchangeability with system specifications before substitution.
Key specifications for W17691: Furnished Items and Quantity: 1 SHORT COUPLING NUT; Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN; Connection Style: COMPRESSION (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 19 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.