PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30311Piston,floating

The Boeing Company Div Defense · NSN 1650-00-946-8749 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-946-8749 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-946-8749. Primary manufacturer part number: 30311.
Features
  • Piston,floating — FSC 1650
  • General Characteristics Item Description: ALUMINUM ALLOY,1.032 IN. LG; 1.609 IN. O/A OD; ONE GROOVE 0.193 IN. W; EIGHT 0.070 IN. DIA HOLES EQUALLY SPACED IN
  • 1 verified cross-reference
  • Primary manufacturer: The Boeing Company Div Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston,floating, cataloged under National Stock Number 1650-00-946-8749, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN1650-00-946-8749
Primary Part Number30311
Item NamePiston,floating
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
General Characteristics Item DescriptionALUMINUM ALLOY,1.032 IN. LG; 1.609 IN. O/A OD; ONE GROOVE 0.193 IN. W; EIGHT 0.070 IN. DIA HOLES EQUALLY SPACED IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2530-00-047-445526574 INTERCHANGEABLE
Valve,brake Pneumatic
Blue Bird Body Co
5950-00-070-186180ES26T26CT INTERCHANGEABLE
Transformer,power
Abbott Technologies, Inc
3110-00-156-8137 INTERCHANGEABLE
Bearing,ball,annular
4520-00-240-8311 INTERCHANGEABLE
Heater,space,electric
3110-00-657-2204206K INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
5940-00-894-922530-211 INTERCHANGEABLE
Splice,conductor
Ideal Industries, Inc.
6320-00-931-485530-311 INTERCHANGEABLE
Two Line Unit Assem
Kidde Technologies, Inc Div Kidde Aerospace and Defense
3110-01-057-957930311 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
5930-01-202-245430311 INTERCHANGEABLE
Switch,toggle
L & R Manufacturing Company
3230-01-235-747930311 INTERCHANGEABLE
Bit,router
Black and Decker Us Inc
Cross-Reference Index
Part NumberManufacturer
30311 The Boeing Company Div Defense (USA)
Related Parts
2530-00-047-4455INTERCHANGEABLE
VALVE,BRAKE PNEUMATIC
26574
5950-00-070-1861INTERCHANGEABLE
TRANSFORMER,POWER
80ES26T26CT
3110-00-156-8137INTERCHANGEABLE
BEARING,BALL,ANNULAR
4520-00-240-8311INTERCHANGEABLE
HEATER,SPACE,ELECTRIC
3110-00-657-2204INTERCHANGEABLE
BEARING,BALL,ANNULAR
206K
5940-00-894-9225INTERCHANGEABLE
SPLICE,CONDUCTOR
30-211
6320-00-931-4855INTERCHANGEABLE
TWO LINE UNIT ASSEM
30-311
3110-01-057-9579INTERCHANGEABLE
BEARING,ROLLER,TAPERED
30311
5930-01-202-2454INTERCHANGEABLE
SWITCH,TOGGLE
30311
3230-01-235-7479INTERCHANGEABLE
BIT,ROUTER
30311
5930-01-244-7522INTERCHANGEABLE
SWITCH,CODE INDICATING WHEEL
4730-01-357-1296INTERCHANGEABLE
BUSHING,PIPE
5118-3-4-1 1/4X1

Frequently Asked Questions

What is NSN 1650-00-946-8749?

NSN 1650-00-946-8749 is a Piston,floating, manufactured by The Boeing Company Div Defense, classified under FSC 1650 (No Item Name Available). Status: active.

What are the part numbers for NSN 1650-00-946-8749?

NSN 1650-00-946-8749 has 1 cross-referenced part number: 30311 (The Boeing Company Div Defense).

What NSN replaces 1650-00-946-8749?

There are 12 known substitutes for 1650-00-946-8749: 2530-00-047-4455, 5950-00-070-1861, 3110-00-156-8137 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30311?

Key specifications for 30311: General Characteristics Item Description: ALUMINUM ALLOY,1.032 IN. LG; 1.609 IN. O/A OD; ONE GROOVE 0.193 IN. W; EIGHT 0.070 IN. DIA HOLES EQUALLY SPACED IN. 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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