PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D1.25Coupling,pipe

Piedmont Pacific Corp · NSN 4730-01-621-4437 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-621-4437 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-621-4437. Primary manufacturer part number: D1.25.
Features
  • Coupling,pipe — FSC 4730
  • Nominal Length: 3.65 INCHES ALL ENDS IN
  • Nominal Width: 1.68 INCHES ALL ENDS IN
  • Operating Pressure: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Material: STEEL STAINLESS - USE STB000 BALL BEARING
  • 2 verified cross-references
  • Primary manufacturer: Piedmont Pacific Corp
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Stainless - Use STB000 Ball Bearing construction
General Description

The Coupling,pipe, cataloged under National Stock Number 4730-01-621-4437, 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-621-4437
Primary Part NumberD1.25
Item NameCoupling,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerPiedmont Pacific Corp
StatusACTIVE
Nominal Length3.65 INCHES ALL ENDS IN
Nominal Width1.68 INCHES ALL ENDS IN
Operating Pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MaterialSTEEL STAINLESS - USE STB000 BALL BEARING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6105-00-136-9142 INTERCHANGEABLE
Motor,alternating Current
5940-00-147-6804D125-00 INTERCHANGEABLE
Ferrule,metallic Shielded Cable,
Te Connectivity Corporation Dba Raychem Product Division
5340-01-004-4951D721-2-234-S INTERCHANGEABLE
Bracket,angle
Industrial Acoustics Company, Inc. Dba I a C Div Iac Acoustics
9150-01-307-3343 INTERCHANGEABLE
Calibrating Oil,standard
5365-01-357-1764SK56Y21-92-1 SIZE D-125 INTERCHANGEABLE
Spacer,plate
Naval Sea Systems Command
5210-01-412-8020D1-25 INTERCHANGEABLE
Tape,measuring
L.s. Starrett Company (the) Div Tool Division
Cross-Reference Index
Part NumberManufacturer
D1.25 PRIMARY Piedmont Pacific Corp (USA)
SR-00034-C Seprotech Systems Inc (CAN)
Related Parts
6105-00-136-9142INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5940-00-147-6804INTERCHANGEABLE
FERRULE,METALLIC SHIELDED CABLE,
D125-00
5340-01-004-4951INTERCHANGEABLE
BRACKET,ANGLE
D721-2-234-S
9150-01-307-3343INTERCHANGEABLE
CALIBRATING OIL,STANDARD
5365-01-357-1764INTERCHANGEABLE
SPACER,PLATE
SK56Y21-92-1 SIZE D-125
5210-01-412-8020INTERCHANGEABLE
TAPE,MEASURING
D1-25

Frequently Asked Questions

What is NSN 4730-01-621-4437?

NSN 4730-01-621-4437 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 4730-01-621-4437?

NSN 4730-01-621-4437 has 2 cross-referenced part numbers: D1.25 (Piedmont Pacific Corp), SR-00034-C (Seprotech Systems Inc).

What NSN replaces 4730-01-621-4437?

There are 6 known substitutes for 4730-01-621-4437: 6105-00-136-9142, 5940-00-147-6804, 5340-01-004-4951 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D1.25?

Key specifications for D1.25: Nominal Length: 3.65 INCHES ALL ENDS IN; Nominal Width: 1.68 INCHES ALL ENDS IN; Operating Pressure: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: STEEL STAINLESS - USE STB000 BALL BEARING. 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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