PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

D0.75Coupling,pipe

Piedmont Pacific Corp · NSN 4730-01-621-4446 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-621-4446 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-621-4446. Primary manufacturer part number: D0.75.
Features
  • Coupling,pipe — FSC 4730
  • Nominal Width: 1.71 INCHES ALL ENDS IN
  • Nominal Length: 3.20 INCHES ALL ENDS IN
  • Operating Pressure: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Material: STEEL STAINLESS - USE STB000 OVERALL
  • 2 verified cross-references
  • Primary manufacturer: Piedmont Pacific Corp
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Stainless - Use STB000 Overall construction
General Description

The Coupling,pipe, cataloged under National Stock Number 4730-01-621-4446, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Piedmont Pacific Corp. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-621-4446
Primary Part NumberD0.75
Item NameCoupling,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerPiedmont Pacific Corp
StatusACTIVE
Nominal Width1.71 INCHES ALL ENDS IN
Nominal Length3.20 INCHES ALL ENDS IN
Operating Pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MaterialSTEEL STAINLESS - USE STB000 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5365-01-358-3122SK56Y21-92-1 SIZE D-075 INTERCHANGEABLE
Spacer,plate
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
SR-00032-C Seprotech Systems Inc (CAN)
D0.75 PRIMARY Piedmont Pacific Corp (USA)
Related Parts
5365-01-358-3122INTERCHANGEABLE
SPACER,PLATE
SK56Y21-92-1 SIZE D-075

Frequently Asked Questions

What is NSN 4730-01-621-4446?

NSN 4730-01-621-4446 is a Coupling,pipe, manufactured by Piedmont Pacific Corp, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-621-4446?

NSN 4730-01-621-4446 has 2 cross-referenced part numbers: SR-00032-C (Seprotech Systems Inc), D0.75 (Piedmont Pacific Corp).

What NSN replaces 4730-01-621-4446?

There is 1 known substitute for 4730-01-621-4446: 5365-01-358-3122. Verify interchangeability with system specifications before substitution.

What are the specifications of D0.75?

Key specifications for D0.75: Nominal Width: 1.71 INCHES ALL ENDS IN; Nominal Length: 3.20 INCHES ALL ENDS IN; Operating Pressure: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Part Name Assigned by Controlling Agency: PIPE COUPLING. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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