The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-889-5573, 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 Tuthill Corp Hansen Coupling Div. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-889-5573 |
| Primary Part Number | B2T16 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tuthill Corp Hansen Coupling Div |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.250 INCHES ALL ENDS IN |
| Connection Style | PLAIN ALL ENDS |
| Mating End Identification | HANSEN MFG CO. COUPLING HALF,QUICK DISCONNECT,PART NO. 2S16 |
| Connection Type | THREADED INTERNAL PIPE FIRST FLUID END CONNECTION |
| Connection Type | EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END |
| Style Designator | MALE COUPLING HALF |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Material | COPPER ALLOY BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | NPT 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 |
|---|---|
| B2T16 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| BST-N2 | Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division (USA) |
| 25FPB | Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co (USA) |
| Reference | Meaning |
|---|---|
| BST-N2 | 5/9 Secondary reference U.S. Government activity |
| 7746653P71 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
NSN 4730-00-889-5573 is a Coupling Half,quick Disconnect, manufactured by Tuthill Corp Hansen Coupling Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-889-5573 has 3 manufacturer part numbers on file: B2T16 (Tuthill Corp Hansen Coupling Div), BST-N2 (Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division), 25FPB (Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co).
Key specifications for B2T16: Nominal Pipe Size Accommodated: 0.250 INCHES ALL ENDS IN; Connection Style: PLAIN ALL ENDS; Mating End Identification: HANSEN MFG CO. COUPLING HALF,QUICK DISCONNECT,PART NO. 2S16; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION. 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.