PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21397Mounting Flange Subassembly

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 4320-00-360-1638 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-360-1638 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-360-1638. Primary manufacturer part number: 21397.
Features
  • Mounting Flange Subassembly — FSC 4320
  • General Characteristics Item Description: CONSISTS OF 1 MTG P/N 66638,13 SELF THREADING INSERTS P/N MS51836-310L
  • 3 verified cross-references
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Mounting Flange Subassembly, cataloged under National Stock Number 4320-00-360-1638, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-360-1638
Primary Part Number21397
Item NameMounting Flange Subassembly
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
General Characteristics Item DescriptionCONSISTS OF 1 MTG P/N 66638,13 SELF THREADING INSERTS P/N MS51836-310L
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5130-00-293-2014 INTERCHANGEABLE
Brush,wire,rotary Wheel
5310-00-595-759921397 INTERCHANGEABLE
Washer,spring Tension
Telemechanics Inc
5950-00-658-4950 INTERCHANGEABLE
Transformer,audio Frequency
5315-00-753-96637539663 INTERCHANGEABLE
Pin,straight,headed
U S Army Tank Automotive Command Amsta-Im-Mm
5905-00-931-699921397 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ward Leonard Ct Llc
4920-00-944-6935 INTERCHANGEABLE
Bearing,ball Assemb
5950-00-974-6171 INTERCHANGEABLE
Coil,radio Frequency
5961-01-036-4459TP2020 INTERCHANGEABLE
Transistor
Micro Uspd Inc
5930-01-181-636066742 INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
3120-01-372-933421397 INTERCHANGEABLE
Bearing,sleeve
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
66742 Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
21397 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
21397 Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations (USA)
Related Parts
5130-00-293-2014INTERCHANGEABLE
BRUSH,WIRE,ROTARY WHEEL
5310-00-595-7599INTERCHANGEABLE
WASHER,SPRING TENSION
21397
5950-00-658-4950INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5315-00-753-9663INTERCHANGEABLE
PIN,STRAIGHT,HEADED
7539663
5905-00-931-6999INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
21397
4920-00-944-6935INTERCHANGEABLE
BEARING,BALL ASSEMB
5950-00-974-6171INTERCHANGEABLE
COIL,RADIO FREQUENCY
5961-01-036-4459INTERCHANGEABLE
TRANSISTOR
TP2020
5930-01-181-6360INTERCHANGEABLE
SWITCH,FLOW
66742
3120-01-372-9334INTERCHANGEABLE
BEARING,SLEEVE
21397
5110-01-536-7908INTERCHANGEABLE
CUTTER,TUBE
66742

Frequently Asked Questions

What is NSN 4320-00-360-1638?

NSN 4320-00-360-1638 is a Mounting Flange Subassembly, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-360-1638?

NSN 4320-00-360-1638 has 3 cross-referenced part numbers: 66742 (Parker Hannifin Corporation Div Hydraulic Systems Division), 21397 (Parker Hannifin Corporation Div Hydraulic Systems Division), 21397 (Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations).

What NSN replaces 4320-00-360-1638?

There are 11 known substitutes for 4320-00-360-1638: 5130-00-293-2014, 5310-00-595-7599, 5950-00-658-4950 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21397?

Key specifications for 21397: General Characteristics Item Description: CONSISTS OF 1 MTG P/N 66638,13 SELF THREADING INSERTS P/N MS51836-310L. 1 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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