The Coupling,pipe, cataloged under National Stock Number 4730-01-517-3131, 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 Mcmaster-Carr Supply Co. Government technical data includes 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-517-3131 |
| Primary Part Number | 6696K61 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Nominal Width Across Flats | 2.500 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.750 INCHES ALL ENDS IN |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 1.875 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | FLANGED |
| Material Document and Classification | QQ-S-766,CLASS 316, 1/4HARD FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES AND 1.625 INCHES FIRST END IN |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 1.625 INCHES CENTER BULKHEAD IN |
| Surface Treatment | PASSIVATE BODY |
| Thread Class | 2A CENTER BULKHEAD A |
| Thread Quantity Per Inch | 16 CENTER BULKHEAD |
| Material | STEEL COMP 316 BODY |
| Material | RUBBER GASKET |
| Material | STEEL COMP 316 LOCK NUT |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT AND UN FIRST END |
| Nominal Thickness | 0.250 INCHES SECOND END IN |
| 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 |
|---|---|
| 6696K61 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 4730-01-517-3131 is a Coupling,pipe, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-517-3131 has 1 manufacturer part number on file: 6696K61 (Mcmaster-Carr Supply Co).
Key specifications for 6696K61: Nominal Width Across Flats: 2.500 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.750 INCHES ALL ENDS IN; Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 1.875 INCHES IN. 20 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.