PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51H-32Flange,pipe,swivel Retaining

Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division · NSN 4730-00-116-5229 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-116-5229 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-116-5229. Primary manufacturer part number: 51H-32.
Features
  • Flange,pipe,swivel Retaining — FSC 4730
  • Style Designator: RECTANGULAR, WITH BOLT HOLES
  • Bolt Hole Diameter: 0.531 INCHES NOMINAL IN
  • Surface Treatment Document and Classification: QQ-Z-325,TYPE @2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
  • Material: STEEL
  • Surface Treatment: ZINC
  • Thickness: 0.750 INCHES NOMINAL IN
  • Face Seating Surface Condition: GROUND
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel construction
General Description

The Flange,pipe,swivel Retaining, cataloged under National Stock Number 4730-00-116-5229, 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 Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-116-5229
Primary Part Number51H-32
Item NameFlange,pipe,swivel Retaining
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerParker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
StatusCANCELLED
Style DesignatorRECTANGULAR, WITH BOLT HOLES
Bolt Hole Diameter0.531 INCHES NOMINAL IN
Surface Treatment Document and ClassificationQQ-Z-325,TYPE @2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
MaterialSTEEL
Surface TreatmentZINC
Thickness0.750 INCHES NOMINAL IN
Face Seating Surface ConditionGROUND
Outside Edge to Bolt Hole Center Distance Along Length1.050 INCHES NOMINAL IN
Center to Center Distance Between Bolt Holes Along Length3.062 INCHES NOMINAL IN
Flange Length4.000 INCHES NOMINAL IN
Flange Section StylePLAIN RECESSED FACE
Flange Width3.720 INCHES NOMINAL IN
Recess Depth0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
Recess Diameter2.844 INCHES NOMINAL IN
Tube Outside Diameter for Which Designed2.000 INCHES NOMINAL IN
Bolt Hole Quantity4
Center to Center Distance Between Bolt Holes Along Width1.620 INCHES NOMINAL IN
Outside Edge to Bolt Hole Center Distance Along Width0.469 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
4730-00-089-3406 INTERCHANGEABLE
Flange,pipe,swivel Retaining
4730-00-255-0560 INTERCHANGEABLE
Flange,pipe,swivel Retaining
4730-00-400-6544 INTERCHANGEABLE
Flange,pipe,swivel Retaining
4730-00-755-7609 INTERCHANGEABLE
Flange,pipe,swivel Retaining
4730-01-074-6595 INTERCHANGEABLE
Flange,pipe,swivel Retaining
Cross-Reference Index
Part NumberManufacturer
51H-32 Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
4730001165229 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
M52525/16-32 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-52525 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
903160C1 Rtx Corporation Div Pratt & Whitney (USA)
6-4644-32 Danfoss Power Solutions II, Llc (USA)
MIL-DTL-52525/16 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-089-3406INTERCHANGEABLE
FLANGE,PIPE,SWIVEL RETAINING
4730-00-255-0560INTERCHANGEABLE
FLANGE,PIPE,SWIVEL RETAINING
4730-00-400-6544INTERCHANGEABLE
FLANGE,PIPE,SWIVEL RETAINING
4730-00-755-7609INTERCHANGEABLE
FLANGE,PIPE,SWIVEL RETAINING
4730-01-074-6595INTERCHANGEABLE
FLANGE,PIPE,SWIVEL RETAINING

Frequently Asked Questions

What is NSN 4730-00-116-5229?

NSN 4730-00-116-5229 is a Flange,pipe,swivel Retaining, manufactured by Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-116-5229?

NSN 4730-00-116-5229 has 7 cross-referenced part numbers: 51H-32 (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division), 4730001165229 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), M52525/16-32 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-52525 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 903160C1 (Rtx Corporation Div Pratt & Whitney) and 2 more.

What NSN replaces 4730-00-116-5229?

There are 5 known substitutes for 4730-00-116-5229: 4730-00-089-3406, 4730-00-255-0560, 4730-00-400-6544 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51H-32?

Key specifications for 51H-32: Special Features: SPLIT FLANGE TYPE; Style Designator: RECTANGULAR, WITH BOLT HOLES; Bolt Hole Diameter: 0.531 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-Z-325,TYPE @2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-116-5229 still in active supply?

NSN 4730-00-116-5229 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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