PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

188-78045-2-40Flange,pipe,swivel Retaining

Danfoss Power Solutions II, Llc · NSN 4730-00-903-8642 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-903-8642 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-903-8642. Primary manufacturer part number: 188-78045-2-40.
Features
  • Flange,pipe,swivel Retaining — FSC 4730
  • Material: COPPER ALLOY
  • Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE
  • Nondefinitive Spec/std Data: EF TYPE
  • Style Designator: ROUND, ONE BOLT HOLE CIRCLE
  • Operating Pressure and Type: 250.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 250.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 250.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 250.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
  • Maximum Operating Temp and Media for Which Designed: 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT WATER DEGF
  • Specification/standard Data: 81349-MIL-F-20042 GOVERNMENT SPECIFICATION
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy construction
General Description

The Flange,pipe,swivel Retaining, cataloged under National Stock Number 4730-00-903-8642, 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 Danfoss Power Solutions II, Llc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN4730-00-903-8642
Primary Part Number188-78045-2-40
Item NameFlange,pipe,swivel Retaining
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerDanfoss Power Solutions II, Llc
StatusACTIVE
MaterialCOPPER ALLOY
Material Document and ClassificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE
Nondefinitive Spec/std DataEF TYPE
Style DesignatorROUND, ONE BOLT HOLE CIRCLE
Operating Pressure and Type250.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 250.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 250.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 250.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
Maximum Operating Temp and Media for Which Designed425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT WATER DEGF
Specification/standard Data81349-MIL-F-20042 GOVERNMENT SPECIFICATION
Thickness0.810 INCHES NOMINAL IN
Bolt Hole Quantity6
Nominal Pipe Size for Which Designed2.000 INCHES IN
Face Seating Surface ConditionMACHINED
Bolt Hole Diameter0.690 INCHES NOMINAL IN
Bolt Circle Diameter4.440 INCHES NOMINAL IN
Flange Diameter5.560 INCHES NOMINAL IN
Flange Section StylePLAIN FACE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5133-01-399-074145 3780 INTERCHANGEABLE
Drill,twist
Greenfield Industries Inc
Cross-Reference Index
Part NumberManufacturer
188-78045-2-40 PRIMARY Danfoss Power Solutions II, Llc (USA)
3-78045-2-40 Danfoss Power Solutions II, Llc (USA)
MIL-F-20042 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
3-74045-2-40 Danfoss Power Solutions II, Llc (USA)
3-78045 Danfoss Power Solutions II, Llc (USA)
Related Parts
5133-01-399-0741INTERCHANGEABLE
DRILL,TWIST
45 3780

Frequently Asked Questions

What is NSN 4730-00-903-8642?

NSN 4730-00-903-8642 is a Flange,pipe,swivel Retaining, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-903-8642?

NSN 4730-00-903-8642 has 5 cross-referenced part numbers: 188-78045-2-40 (Danfoss Power Solutions II, Llc), 3-78045-2-40 (Danfoss Power Solutions II, Llc), MIL-F-20042 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 3-74045-2-40 (Danfoss Power Solutions II, Llc), 3-78045 (Danfoss Power Solutions II, Llc).

What NSN replaces 4730-00-903-8642?

There is 1 known substitute for 4730-00-903-8642: 5133-01-399-0741. Verify interchangeability with system specifications before substitution.

What are the specifications of 188-78045-2-40?

Key specifications for 188-78045-2-40: Material: COPPER ALLOY; Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE; Nondefinitive Spec/std Data: EF TYPE; Style Designator: ROUND, ONE BOLT HOLE CIRCLE. 15 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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