PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

637-4Tube,coupling

Superior Valve Co · NSN 4730-01-121-4717 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-121-4717 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-121-4717. Primary manufacturer part number: 637-4.
Features
  • Tube,coupling — FSC 4730
  • 1 verified cross-reference
  • Primary manufacturer: Superior Valve Co
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Tube,coupling, cataloged under National Stock Number 4730-01-121-4717, 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 Superior Valve Co. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameTube,coupling
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersSuperior Valve Co (CAGE 58553)
Technical Specifications
ParameterValue
NSN4730-01-121-4717
Primary Part Number637-4
Item NameTube,coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSuperior Valve Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
8345-00-233-2952 INTERCHANGEABLE
Flag,national
8345-00-682-6428 INTERCHANGEABLE
Flag,national
6220-01-215-35066374 INTERCHANGEABLE
Directional Light,vehicular
893 Mfg, Llc
6695-01-307-1101 INTERCHANGEABLE
Filter,panel,elect
5915-01-381-4202CC-231047-1 INTERCHANGEABLE
Filter,radio Frequency Interfere
Marconi Communications Inc
3120-01-397-6869 INTERCHANGEABLE
Bearing,washer,thrust
5130-01-493-9094 INTERCHANGEABLE
Brush,wire,rotary Cup
6515-01-561-9740RSR03 INTERCHANGEABLE
Sheath,guiding,vascular
Terumo Medical Corp
Cross-Reference Index
Part NumberManufacturer
637-4 PRIMARY Superior Valve Co (USA)
Related Parts
8345-00-233-2952INTERCHANGEABLE
FLAG,NATIONAL
8345-00-682-6428INTERCHANGEABLE
FLAG,NATIONAL
6220-01-215-3506INTERCHANGEABLE
DIRECTIONAL LIGHT,VEHICULAR
6374
6695-01-307-1101INTERCHANGEABLE
FILTER,PANEL,ELECT
5915-01-381-4202INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
CC-231047-1
3120-01-397-6869INTERCHANGEABLE
BEARING,WASHER,THRUST
5130-01-493-9094INTERCHANGEABLE
BRUSH,WIRE,ROTARY CUP
6515-01-561-9740INTERCHANGEABLE
SHEATH,GUIDING,VASCULAR
RSR03

Frequently Asked Questions

What is NSN 4730-01-121-4717?

NSN 4730-01-121-4717 is a Tube,coupling, manufactured by Superior Valve Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-121-4717?

NSN 4730-01-121-4717 has 1 cross-referenced part number: 637-4 (Superior Valve Co).

What NSN replaces 4730-01-121-4717?

There are 8 known substitutes for 4730-01-121-4717: 8345-00-233-2952, 8345-00-682-6428, 6220-01-215-3506 and 5 more. Verify interchangeability with system specifications before substitution.

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