PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S40-6Coupling Assembly,quick Disconne

Safeway Hydraulics Inc. · NSN 4730-00-066-0921 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-066-0921 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-066-0921. Primary manufacturer part number: S40-6.
Features
  • Coupling Assembly,quick Disconne — FSC 4730
  • Material: STEEL OVERALL
  • Features Provided: SELF-SEALING
  • Surface Treatment: CADMIUM AND DICHROMATE OVERALL
  • Thread Series Designator: NPTF FIRST FLUID END CONNECTION
  • Leg Length: 0.594 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Connection Style: PLAIN FIRST FLUID END CONNECTION
  • Style Designator: COUPLING ASSEMBLY
Applications
  • Applications requiring Steel Overall construction
General Description

The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-00-066-0921, 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 Safeway Hydraulics Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-066-0921
Primary Part NumberS40-6
Item NameCoupling Assembly,quick Disconne
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSafeway Hydraulics Inc.
StatusACTIVE
MaterialSTEEL OVERALL
Features ProvidedSELF-SEALING
Surface TreatmentCADMIUM AND DICHROMATE OVERALL
Thread Series DesignatorNPTF FIRST FLUID END CONNECTION
Leg Length0.594 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Connection StylePLAIN FIRST FLUID END CONNECTION
Style DesignatorCOUPLING ASSEMBLY
Quick Disconnect Nominal Size0.812 INCHES ALL ENDS IN
Nominal Thread Size0.750 INCHES FIRST FLUID END CONNECTION IN
Quick Disconnect MethodSPRING PUSH-PULL ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-099-0301S406 INTERCHANGEABLE
Packing,preformed
Tyco Fire Products Lp
6240-01-055-5121UNI INTERCHANGEABLE
Lamp,flashtube
Whelen Engineering Company, Inc. Dba Whelen Engineering Co Inc Div Whelen Engineering Company
3040-01-116-2956S406 INTERCHANGEABLE
Control Assembly,push-Pull
Simmonds Precision Products Inc
1005-01-302-6774 INTERCHANGEABLE
Pin,firing
Cross-Reference Index
Part NumberManufacturer
4000-5 Parker-Hannifin Corporation Div Quick Coupling Division (USA)
4000-5L0FL0 Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
4000-5 Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
4000-5 Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division (USA)
S40-6 PRIMARY Safeway Hydraulics Inc. (USA)
Related Parts
5330-00-099-0301INTERCHANGEABLE
PACKING,PREFORMED
S406
6240-01-055-5121INTERCHANGEABLE
LAMP,FLASHTUBE
UNI
3040-01-116-2956INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
S406
1005-01-302-6774INTERCHANGEABLE
PIN,FIRING

Frequently Asked Questions

What is NSN 4730-00-066-0921?

NSN 4730-00-066-0921 is a Coupling Assembly,quick Disconne, manufactured by Safeway Hydraulics Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-066-0921?

NSN 4730-00-066-0921 has 5 cross-referenced part numbers: 4000-5 (Parker-Hannifin Corporation Div Quick Coupling Division), 4000-5L0FL0 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), 4000-5 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), 4000-5 (Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division), S40-6 (Safeway Hydraulics Inc.).

What NSN replaces 4730-00-066-0921?

There are 4 known substitutes for 4730-00-066-0921: 5330-00-099-0301, 6240-01-055-5121, 3040-01-116-2956 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S40-6?

Key specifications for S40-6: Material: STEEL OVERALL; Features Provided: SELF-SEALING; Surface Treatment: CADMIUM AND DICHROMATE OVERALL; Overall Length: 3.688 INCHES MINIMUM AND 3.828 INCHES MAXIMUM IN. 11 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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