PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

905-9Piston,pump

Williams Machine Co · NSN 4320-01-314-2172 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-314-2172 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-314-2172. Primary manufacturer part number: 905-9.
Features
  • Piston,pump — FSC 4320
  • Material: IRON CAST
  • 2 verified cross-references
  • Primary manufacturer: Williams Machine Co
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Iron Cast construction
General Description

The Piston,pump, cataloged under National Stock Number 4320-01-314-2172, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Williams Machine Co. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-314-2172
Primary Part Number905-9
Item NamePiston,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerWilliams Machine Co
StatusACTIVE
MaterialIRON CAST
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5930-00-262-99539059 INTERCHANGEABLE
Switch,push
Cole Hersee Company
3110-00-293-93020042980-3 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
5360-00-317-9628 INTERCHANGEABLE
Spring
2910-00-323-99265590796 INTERCHANGEABLE
Pump,fuel,cam Actuated
General Motors Llc Dba General Motors Llc
5940-00-933-7904 INTERCHANGEABLE
Terminal Board
5915-00-981-2774 INTERCHANGEABLE
Filter,low Pass
4820-01-043-45869059 INTERCHANGEABLE
Stem,fluid Valve
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
5998-01-056-90849059 INTERCHANGEABLE
Circuit Card Assembly
L3 Technologies, Inc. Div Communication Systems-West
6636-01-153-10029059 INTERCHANGEABLE
Temperature Chamber,unit Repair
Delta Design Inc Sub Cohu Inc
5950-01-171-5746921508-1 INTERCHANGEABLE
Coil,radio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Cross-Reference Index
Part NumberManufacturer
905-9 Williams Machine Co (USA)
3057-11 PIECE 6 Williams Machine Co (USA)
Related Parts
5930-00-262-9953INTERCHANGEABLE
SWITCH,PUSH
9059
3110-00-293-9302INTERCHANGEABLE
BEARING,BALL,ANNULAR
0042980-3
5360-00-317-9628INTERCHANGEABLE
SPRING
2910-00-323-9926INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
5590796
5940-00-933-7904INTERCHANGEABLE
TERMINAL BOARD
5915-00-981-2774INTERCHANGEABLE
FILTER,LOW PASS
4820-01-043-4586INTERCHANGEABLE
STEM,FLUID VALVE
9059
5998-01-056-9084INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
9059
6636-01-153-1002INTERCHANGEABLE
TEMPERATURE CHAMBER,UNIT REPAIR
9059
5950-01-171-5746INTERCHANGEABLE
COIL,RADIO FREQUENCY
921508-1
5915-01-312-2403INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
6145-01-357-3964INTERCHANGEABLE
CABLE,RADIO FREQUENCY
IMB9209DC

Frequently Asked Questions

What is NSN 4320-01-314-2172?

NSN 4320-01-314-2172 is a Piston,pump, manufactured by Williams Machine Co, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-314-2172?

NSN 4320-01-314-2172 has 2 cross-referenced part numbers: 905-9 (Williams Machine Co), 3057-11 PIECE 6 (Williams Machine Co).

What NSN replaces 4320-01-314-2172?

There are 12 known substitutes for 4320-01-314-2172: 5930-00-262-9953, 3110-00-293-9302, 5360-00-317-9628 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 905-9?

Key specifications for 905-9: Material: IRON CAST; End Item Identification: ROTARY PUMP,WILLIAMS MACHINE CO,MODEL SD; Special Features: TWO PISTONS REQUIRED PER PUMP. 3 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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