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Home / Airframe Parts / McFarlane Aviation Products / Replacement Parts / Washers /McFarlane Washer Lock 1/2" - EC111
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McFarlane Washer Lock 1/2" - EC111

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Part# 05-16315
MFR Model# EC111

Overview

The retaining nut threads onto the threaded section of the control on the back side of the instrument panel to secure the control. Replacement retaining lock washer p/n EC111 for all McFarlane controls that attach to the instrument panel with a 1/2-20 thread.
Replacement Parts for McFarlane Push-Pull Controls



We offer a variety of replacement parts to service your McFarlane push-pull controls.
  • Adjustable Friction Lock Service Kits
  • Boots
  • Knobs
  • Retaining Nuts and Lock Washers
  • Threaded Wear Sleeve Nuts and Lock Washers
  • Miscellaneous
  • Dual Throttle Hardware Kit P/N 6408
Adjustable Friction Lock Service Kits:

Part NumberDescriptionUse Eligibility
EC12SKFriction Packing Service KitThrottle controls using a 1/2" friction nut
EC312SKFriction Packing Service KitThrottle controls using a 9/16" friction nut

Boots: Fuel, oil and temperature resistant, keeps trash out of the control and dampens vibration.
Part NumberDescriptionUse Eligibility
2353/16" Pushrod BootControls with a 3/16" pushrod
2721/4" Pushrod BootControls with a 1/4" pushrod
EC04Swivel Boot with Spring LockControls employing a swivel joint
Knobs:
Part NumberDescriptionUse Eligibility*
1536A or 1536BT-Handle: B, C, GN, L, R, W, or YVarious controls
6277Round: R, B, L, or CMCC1XXDLLL and MCUX24-LLL series controls
6277Round, engraved with "CHOKE":
RC, BC, LC, or CC		MCC1XXDLLL series controls
6277Round, engraved with "CABIN AIR":
RA, BA, LA, or CA		MCUX24-LLL series controls**
6277Round, engraved with "DEFROST":
RD, BD, LD, or CD		MCUX24-LLL series controls**
6277Round, engraved with "CABIN HEAT":
RH, BH, LH, or CH		MCUX24-LLL series controls**
6277Round, engraved with "PARK BRAKE":
RP, BP, LP, or CP		MCUX24-LLL series controls**
6307-BK Round, BlackVarious Cessna controls
6307-RD Round, RedVarious Cessna controls
6378Fuel Strainer DrainMCS1517 series controls
6417T-HandleMCTXXXX-LLL and MCTLXXX4DLLL series controls
6418T-Handle, Turn-to-LockMCTXXXX-LLL and MCTLXXX4DLLL series controls
64274 ProngMCTXXXX-LLL and MCTLXXX4DLLL series controls
64284 Prong, Turn-to-LockMCTXXXX-LLL and MCTLXXX4DLLL series controls
6429FlutedMCTXXXX-LLL and MCTLXXX4DLLL series controls
6430Fluted, Turn-to-LockMCTXXXX-LLL and MCTLXXX4DLLL series controls
6432T-Handle, ShortenedMCTXXXX-LLL and MCTLXXX4DLLL series controls
6489Square: R, B, L, or CMCUX24-LLL series controls**
6489Square, engraved with "CARB HEAT":
RB, BB, LB, or CB		MCUX24-LLL series controls**
6495Phenolic, Black: -01B, -02B, -03B, -04R or -04B MCUX24-LLL series controls**
6512Triangle: R, B, L, or CMCUX24-LLL series controls**
6570Red Vernier-Assist KnobVernier-Assist Mixture controls
66201/4-20 Black Vernier-Assist KnobVernier-Assist Throttle controls
6660T-Handle, Turn-to-Lock,
engraved with "Choke Lock"		MCTXXXX-LLL and MCTLXXX4DLLL series controls
6661Fluted, Turn-to-Lock,
engraved with "Cabin Heat Lock"		MCTXXXX-LLL and MCTLXXX4DLLL series controls
6662Fluted, Turn-to-Lock,
engraved with "Airbox Lock"		MCTXXXX-LLL and MCTLXXX4DLLL series controls
6730 Prop, Vernier-AssistMCVA Vernier-Assist controls
EC031/4-20 Black KnobThrottle controls
EC125-1Hemisphere, BlackThrottle controls
EC531/4-20 Black Ball KnobP/N MC12693-04 and MC455-139
MCT1XXDLLL, MCTLXXX4DLLL, MCTLXXXX-LLL and MCC1XXDLLL series controls
**For all knob options for the MCUX24-LLL Universal Light-Weight Controls, go to Light-Weight Control Knob Options.
Retaining Nuts and Lock Washers: The retaining nut threads onto the threaded section of the control on the back side of the instrument panel to secure the control.
Part NumberDescriptionUse Eligibility*
6060-81/2-20 Retaining NutThrottle controls using 1/2-20 threaded fittings
EC1111/2" Lock WasherThrottle controls using 1/2" threaded fittings
EC1193/4-16 Extended Panel NutControls with a 3/4-16 thread
MS35333-401/4" Steel Lock WasherMCT1XXDLLL, MCTLXXX4DLLL, MCTLXXXX-LLL, and MCC1XXDLLL series controls
MS35333-441/2" Lock Washer
6060-123/4-16 Retaining NutThrottle controls using 3/4-16 threaded fittings
EC1123/4" Lock WasherThrottle controls using 3/4" threaded fittings
MS35333-473/4" Lock Washer
61337/16-20 Retaining NutThrottle controls using 7/16-20 threaded fittings
61963/4-24 Stainless Steel Jam NutMCUX24-LLL series controls
61973/8" Lock WasherMCUX24-LLL series controls
62607/16-20 Retaining Nut, ModifiedMC6350 dual push-to-unlock controls
EC387/16" Lock WasherP/N MC565-548 series controls
EC613/8" Lock WasherP/N MC12693-04 or MC455-139
EC623/8-24 Stainless Steel Retaining NutP/N MC12693-04 or MC455-139
EC65Throttle Spacer BushingP/N MC12693-04 or MC455-139
Threaded Wear Sleeve Nuts and Lock Washers: Threaded wear sleeves are used on many McFarlane controls to secure the control to the firewall and/or mounting brackets.
Part NumberDescriptionUse Eligibility
EC331/4-20 Stainless Steel Jam Nut for KnobsThrottle controls using 1/4-20 threaded fittings
(except P/N MC12693-04 and MC455-139)
EC387/16" Lock WasherP/N MC565-548 series controls
EC7012M x 1.25 Jam NutP/N MC565 series controls
EC7212mm Lock WasherP/N MC565 series controls
Miscellaneous:
Part NumberDescriptionUse Eligibility*
61351/8" Ball BearingMC6150 and MC6250 push-to-unlock controls
7391-0.3003/8" Ball Bearing Halves
McFarlane Manufactured Beechcraft Controls
6289Decal, "Carb Heat"Piper carburetor heat controls
64090.05 Allen WrenchMCTL1014D series controls 
6290-06-12KPanel Hole ReducerAdapts a 0.375" control to a 0.75" hole
6290-08-12KPanel Hole ReducerAdapts a 0.5" control to a 0.75" hole
6416Pin, Turn-to-LockMCTLXXX4DLLL and MCTLXXXX-LLL series controls
6420Ferrule, Turn-to-Lock, BrassMCTLXXX4DLLL and MCTLXXXX-LLL series controls
6423Ferrule, Turn-to-Lock, NylonMCTLXXX4DLLL and MCTLXXXX-LLL series controls
6424Conduit TerminalMCT1XXDLLL, MCTLXXX4DLLL, and MCC1XXDLLL series controls
6433-1Conduit ClampMCQ1XXDLLL series controls
6515Barrel Stop Assembly
MCTL1014D and MCC101D series controls
EC89Wedge WasherUse on each side of instrument panel to angle a control
EC989/16" Friction Adjust WheelThrottle controls using a 9/16" friction nut
M83248/1-006O-ringMCC1XXDLLL series controls
MS35650-304Jam NutMCC1XXDLLL series controls
Dual Throttle Hardware Kit P/N 6408: 
Part NumberDescription
6408Kit contains the following:
62712 each Slip Fit Conduit Terminal Assemblies
62702 each Cable Stop Assemblies
68221 each Spring, Red, Left
72351 each Spring, Blue, Right
Hex Wrench1 each

Use Eligibility*:
Part NumberDescription
XXcable/wire type
LLLpart length
MCUX24-LLLUniversal Light-Weight Control
MCT1XXDLLLDual Throttle
MCTLXXX4DLLLDual Turn-to-Lock
MCTLXXXX-LLLSingle Turn-to-Lock
MCC1XXDLLLDual Control
MCQ1XXDLLLDual Quadrant Control
   
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Please note, Aircraft Spruce ®'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce ® assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.