PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SS-8-RA-6Reducer,pipe

Swagelok Co · NSN 4730-01-372-9700 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-372-9700 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-372-9700. Primary manufacturer part number: SS-8-RA-6.
Features
  • Reducer,pipe — FSC 4730
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Overall Length: 1.680 INCHES IN
  • Nominal Thread Size: 0.500 INCHES FIRST END IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Nominal Thread Size: 0.375 INCHES SECOND END IN
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Reducer Type: CONCENTRIC
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-01-372-9700, 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 Swagelok Co. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 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
NSN4730-01-372-9700
Primary Part NumberSS-8-RA-6
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSwagelok Co
StatusACTIVE
Connection StylePLAIN (PIPE) SECOND END
Nominal Overall Length1.680 INCHES IN
Nominal Thread Size0.500 INCHES FIRST END IN
MaterialSTEEL CORROSION RESISTING OVERALL
Nominal Thread Size0.375 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Reducer TypeCONCENTRIC
Connection TypeTHREADED INTERNAL PIPE FIRST END
Thread Series DesignatorNPTF ALL ENDS
Connection StylePLAIN (PIPE) FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-00-087-4811SAE J514-3 6-4 140139S INTERCHANGEABLE
Reducer,pipe
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
8-6-140139SA Sae International Dba Sae International (USA)
6303378 Naval Sea Systems Command (USA)
1/2 X 3/8FG-SS Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
1/2 X 3/8FG-SS Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
8-6-140139SA Society of Automotive Engineers Inc (USA)
SS-8-RA-6 PRIMARY Swagelok Co (USA)
SS-8-RA-6 Cajon Co (USA)
6303378-002 Naval Sea Systems Command (USA)
Related Parts
4730-00-087-4811INTERCHANGEABLE
REDUCER,PIPE
SAE J514-3 6-4 140139S

Frequently Asked Questions

What is NSN 4730-01-372-9700?

NSN 4730-01-372-9700 is a Reducer,pipe, manufactured by Swagelok Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-372-9700?

NSN 4730-01-372-9700 has 8 cross-referenced part numbers: 8-6-140139SA (Sae International Dba Sae International), 6303378 (Naval Sea Systems Command), 1/2 X 3/8FG-SS (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), 1/2 X 3/8FG-SS (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division), 8-6-140139SA (Society of Automotive Engineers Inc) and 3 more.

What NSN replaces 4730-01-372-9700?

There is 1 known substitute for 4730-01-372-9700: 4730-00-087-4811. Verify interchangeability with system specifications before substitution.

What are the specifications of SS-8-RA-6?

Key specifications for SS-8-RA-6: Connection Style: PLAIN (PIPE) SECOND END; Nominal Overall Length: 1.680 INCHES IN; Nominal Thread Size: 0.500 INCHES FIRST END IN; Material: STEEL CORROSION RESISTING OVERALL. 10 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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