PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M52525/16-12Flange,pipe,swivel Retaining

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-074-6595 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-074-6595 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-074-6595. Primary manufacturer part number: M52525/16-12.
Features
  • Flange,pipe,swivel Retaining — FSC 4730
  • Recess Diameter: 1.531 INCHES NOMINAL IN
  • Center to Center Distance Between Bolt Holes Along Length: 1.875 INCHES NOMINAL IN
  • Surface Treatment Document and Classification: QQ-Z-325,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
  • Outside Edge to Bolt Hole Center Distance Along Width: 0.343 INCHES NOMINAL IN
  • Specification/standard Data: 81349-MIL-F-52525 GOVERNMENT SPECIFICATION
  • Maximum Operating Temp and Media for Which Designed: 212.0 FAHRENHEIT FUEL/OIL, HYDROCARBON DEGF
  • Material: STEEL OR IRON
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel or Iron construction
General Description

The Flange,pipe,swivel Retaining, cataloged under National Stock Number 4730-01-074-6595, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-074-6595
Primary Part NumberM52525/16-12
Item NameFlange,pipe,swivel Retaining
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Recess Diameter1.531 INCHES NOMINAL IN
Center to Center Distance Between Bolt Holes Along Length1.875 INCHES NOMINAL IN
Surface Treatment Document and ClassificationQQ-Z-325,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
Outside Edge to Bolt Hole Center Distance Along Width0.343 INCHES NOMINAL IN
Specification/standard Data81349-MIL-F-52525 GOVERNMENT SPECIFICATION
Maximum Operating Temp and Media for Which Designed212.0 FAHRENHEIT FUEL/OIL, HYDROCARBON DEGF
MaterialSTEEL OR IRON
Center to Center Distance Between Bolt Holes Along Width0.876 INCHES NOMINAL IN
Face Seating Surface ConditionGROUND
Flange Width2.040 INCHES NOMINAL IN
Flange Section StylePLAIN FACE, SOCKET NECK
Bolt Hole Quantity4
Surface TreatmentZINC
Socket Depth0.245 INCHES NOMINAL IN
Style DesignatorRECTANGULAR, WITH BOLT HOLES
Bolt Hole Diameter0.406 INCHES NOMINAL IN
Outside Edge to Bolt Hole Center Distance Along Length0.580 INCHES NOMINAL IN
Thickness0.560 INCHES NOMINAL IN
Flange Length2.560 INCHES NOMINAL IN
Nominal Pipe Size for Which Designed0.750 INCHES IN
Operating Pressure and Type5000.0 POUNDS PER SQUARE INCH (PSI) HYDROCARBON FUEL OR OIL MAXIMUM REQUIRED LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-089-3406 INTERCHANGEABLE
Flange,pipe,swivel Retaining
4730-00-116-5229 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
Cross-Reference Index
Part NumberManufacturer
M52525/16-12 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-52525/16 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M52525/16-12G 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
Related Parts
4730-00-089-3406INTERCHANGEABLE
FLANGE,PIPE,SWIVEL RETAINING
4730-00-116-5229INTERCHANGEABLE
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

Frequently Asked Questions

What is NSN 4730-01-074-6595?

NSN 4730-01-074-6595 is a Flange,pipe,swivel Retaining, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-074-6595?

NSN 4730-01-074-6595 has 4 cross-referenced part numbers: M52525/16-12 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-52525/16 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M52525/16-12G (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).

What NSN replaces 4730-01-074-6595?

There are 5 known substitutes for 4730-01-074-6595: 4730-00-089-3406, 4730-00-116-5229, 4730-00-255-0560 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M52525/16-12?

Key specifications for M52525/16-12: Recess Diameter: 1.531 INCHES NOMINAL IN; Center to Center Distance Between Bolt Holes Along Length: 1.875 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-Z-325,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE; Outside Edge to Bolt Hole Center Distance Along Width: 0.343 INCHES NOMINAL IN. 22 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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