PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8640Piston,compressor

Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor · NSN 4310-01-251-6253 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-251-6253 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-251-6253. Primary manufacturer part number: 8640.
Features
  • Piston,compressor — FSC 4310
  • Integral Connecting Rod: NOT INCLUDED
  • Surface Finish: FINISHED
  • Pin Hole Bushing: NOT INCLUDED
  • Retaining Ring Groove: INCLUDED
  • Material: ALUMINUM
  • Finished Size Designation: OVERSIZE
  • Pin: NOT INCLUDED
Applications
  • Applications requiring Aluminum construction
General Description

The Piston,compressor, cataloged under National Stock Number 4310-01-251-6253, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. Government technical data includes 8 verified specifications, 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
NSN4310-01-251-6253
Primary Part Number8640
Item NamePiston,compressor
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerQuincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
StatusACTIVE
Integral Connecting RodNOT INCLUDED
Surface FinishFINISHED
Pin Hole BushingNOT INCLUDED
Retaining Ring GrooveINCLUDED
MaterialALUMINUM
Finished Size DesignationOVERSIZE
PinNOT INCLUDED
RingNOT INCLUDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-086-885708140 INTERCHANGEABLE
Stem,fluid Valve
Elkay Mfg Co Water Cooler Div
5935-00-087-5752 INTERCHANGEABLE
Socket,plug-in Electronic Compon
7025-00-139-63688140 INTERCHANGEABLE
Search Unit,tape
Emcore Corporation Div Concord Division
5940-00-171-02450165PC8 INTERCHANGEABLE
Terminal Board
Lockheed Martin Corporation Div Rms - Mitchel Field
6240-00-570-9884640 INTERCHANGEABLE
Lamp,incandescent
Industrial Electronic Engineers, Inc.
5950-00-648-67688140 INTERCHANGEABLE
Transformer,power
Instruments and Flight Research, Inc.
5930-00-849-08651MR1169AP1 INTERCHANGEABLE
Switch,pressure
Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations
1680-00-907-36258640 INTERCHANGEABLE
Actuator,electro-Mechanical,line
Aerocontrolex Group, Inc. Div Talley Actuators
4320-01-185-60888140 INTERCHANGEABLE
Deflector,dirt and Liquid
Air & Liquid Systems Corporation Dba Buffalo Pumps
6640-01-198-13118140 INTERCHANGEABLE
Tube,centrifuge
Corning Glass Works
Cross-Reference Index
Part NumberManufacturer
8640 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
8140 Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
Related Parts
4820-00-086-8857INTERCHANGEABLE
STEM,FLUID VALVE
08140
5935-00-087-5752INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
7025-00-139-6368INTERCHANGEABLE
SEARCH UNIT,TAPE
8140
5940-00-171-0245INTERCHANGEABLE
TERMINAL BOARD
0165PC8
6240-00-570-9884INTERCHANGEABLE
LAMP,INCANDESCENT
640
5950-00-648-6768INTERCHANGEABLE
TRANSFORMER,POWER
8140
5930-00-849-0865INTERCHANGEABLE
SWITCH,PRESSURE
1MR1169AP1
1680-00-907-3625INTERCHANGEABLE
ACTUATOR,ELECTRO-MECHANICAL,LINE
8640
4320-01-185-6088INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
8140
6640-01-198-1311INTERCHANGEABLE
TUBE,CENTRIFUGE
8140
5940-01-204-4162INTERCHANGEABLE
TERMINAL JUNCTION BLOCK,SECTIONA
8-140
6670-01-270-9888INTERCHANGEABLE
SCALE,WEIGHING

Frequently Asked Questions

What is NSN 4310-01-251-6253?

NSN 4310-01-251-6253 is a Piston,compressor, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-251-6253?

NSN 4310-01-251-6253 has 2 cross-referenced part numbers: 8640 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor), 8140 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).

What NSN replaces 4310-01-251-6253?

There are 12 known substitutes for 4310-01-251-6253: 4820-00-086-8857, 5935-00-087-5752, 7025-00-139-6368 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8640?

Key specifications for 8640: Integral Connecting Rod: NOT INCLUDED; Surface Finish: FINISHED; Pin Hole Bushing: NOT INCLUDED; Retaining Ring Groove: INCLUDED. 9 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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