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Part Number EC03

KNOB, Black, 1/4-20

P/N: EC03

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Approval FAA PMA Sub-Component
Condition New
Manufacturer McFarlane Aviation
Unit of Measure Each
Retail Price $16.64
Your Price $13.71 Free Shipping on Orders over $500
Stock Status In Stock

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Product Details

Replacement knob for McFarlane throttle controls.

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:

Part Number Description Use Eligibility
EC12SK Friction Packing Service Kit Throttle controls using a 1/2" friction nut
EC312SK Friction Packing Service Kit Throttle controls using a 9/16" friction nut

Boots: Fuel, oil and temperature resistant, keeps trash out of the control and dampens vibration.

Part Number Description Use Eligibility
235 3/16" Pushrod Boot Controls with a 3/16" pushrod
272 1/4" Pushrod Boot Controls with a 1/4" pushrod
EC04 Swivel Boot with Spring Lock Controls employing a swivel joint

Knobs:

Part Number Description Use Eligibility*
1536A or 1536B T-Handle: B, C, GN, L, R, W, or Y Various controls
6277 Round: R, B, L, or C MCC1XXDLLL and MCUX24-LLL series controls
6277 Round, engraved with "CHOKE":
RC, BC, LC, or CC		 MCC1XXDLLL series controls
6277 Round, engraved with "CABIN AIR":
RA, BA, LA, or CA		 MCUX24-LLL series controls**
6277 Round, engraved with "DEFROST":
RD, BD, LD, or CD		 MCUX24-LLL series controls**
6277 Round, engraved with "CABIN HEAT":
RH, BH, LH, or CH		 MCUX24-LLL series controls**
6277 Round, engraved with "PARK BRAKE":
RP, BP, LP, or CP		 MCUX24-LLL series controls**
6307-BK  Round, Black Various Cessna controls
6307-RD  Round, Red Various Cessna controls
6378 Fuel Strainer Drain MCS1517 series controls
6417 T-Handle MCTXXXX-LLL and MCTLXXX4DLLL series controls
6418 T-Handle, Turn-to-Lock MCTXXXX-LLL and MCTLXXX4DLLL series controls
6427 4 Prong MCTXXXX-LLL and MCTLXXX4DLLL series controls
6428 4 Prong, Turn-to-Lock MCTXXXX-LLL and MCTLXXX4DLLL series controls
6429 Fluted MCTXXXX-LLL and MCTLXXX4DLLL series controls
6430 Fluted, Turn-to-Lock MCTXXXX-LLL and MCTLXXX4DLLL series controls
6432 T-Handle, Shortened MCTXXXX-LLL and MCTLXXX4DLLL series controls
6489 Square: R, B, L, or C MCUX24-LLL series controls**
6489 Square, engraved with "CARB HEAT":
RB, BB, LB, or CB		 MCUX24-LLL series controls**
6495 Phenolic, Black: -01B, -02B, -03B, -04R or -04B  MCUX24-LLL series controls**
6512 Triangle: R, B, L, or C MCUX24-LLL series controls**
6570 Red Vernier-Assist Knob Vernier-Assist Mixture controls
6620 1/4-20 Black Vernier-Assist Knob Vernier-Assist Throttle controls
6660 T-Handle, Turn-to-Lock,
engraved with "Choke Lock"		 MCTXXXX-LLL and MCTLXXX4DLLL series controls
6661 Fluted, Turn-to-Lock,
engraved with "Cabin Heat Lock"		 MCTXXXX-LLL and MCTLXXX4DLLL series controls
6662 Fluted, Turn-to-Lock,
engraved with "Airbox Lock"		 MCTXXXX-LLL and MCTLXXX4DLLL series controls
6730  Prop, Vernier-Assist MCVA Vernier-Assist controls
EC03 1/4-20 Black Knob Throttle controls
EC125-1 Hemisphere, Black Throttle controls
EC53 1/4-20 Black Ball Knob P/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 Number Description Use Eligibility*
6060-8 1/2-20 Retaining Nut Throttle controls using 1/2-20 threaded fittings
EC111 1/2" Lock Washer Throttle controls using 1/2" threaded fittings
EC119 3/4-16 Extended Panel Nut Controls with a 3/4-16 thread
MS35333-40 1/4" Steel Lock Washer MCT1XXDLLL, MCTLXXX4DLLL, MCTLXXXX-LLL, and MCC1XXDLLL series controls
MS35333-44 1/2" Lock Washer
6060-12 3/4-16 Retaining Nut Throttle controls using 3/4-16 threaded fittings
EC112 3/4" Lock Washer Throttle controls using 3/4" threaded fittings
MS35333-47 3/4" Lock Washer
6133 7/16-20 Retaining Nut Throttle controls using 7/16-20 threaded fittings
6196 3/4-24 Stainless Steel Jam Nut MCUX24-LLL series controls
6197 3/8" Lock Washer MCUX24-LLL series controls
6260 7/16-20 Retaining Nut, Modified MC6350 dual push-to-unlock controls
EC38 7/16" Lock Washer P/N MC565-548 series controls
EC61 3/8" Lock Washer P/N MC12693-04 or MC455-139
EC62 3/8-24 Stainless Steel Retaining Nut P/N MC12693-04 or MC455-139
EC65 Throttle Spacer Bushing P/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 Number Description Use Eligibility
EC33 1/4-20 Stainless Steel Jam Nut for Knobs Throttle controls using 1/4-20 threaded fittings
(except P/N MC12693-04 and MC455-139)
EC38 7/16" Lock Washer P/N MC565-548 series controls
EC70 12M x 1.25 Jam Nut P/N MC565 series controls
EC72 12mm Lock Washer P/N MC565 series controls

Miscellaneous:

Part Number Description Use Eligibility*
6135 1/8" Ball Bearing MC6150 and MC6250 push-to-unlock controls
7391-0.300 3/8" Ball Bearing Halves McFarlane Manufactured Beechcraft Controls
6289 Decal, "Carb Heat" Piper carburetor heat controls
6409 0.05 Allen Wrench MCTL1014D series controls 
6290-06-12K Panel Hole Reducer Adapts a 0.375" control to a 0.75" hole
6290-08-12K Panel Hole Reducer Adapts a 0.5" control to a 0.75" hole
6416 Pin, Turn-to-Lock MCTLXXX4DLLL and MCTLXXXX-LLL series controls
6420 Ferrule, Turn-to-Lock, Brass MCTLXXX4DLLL and MCTLXXXX-LLL series controls
6423 Ferrule, Turn-to-Lock, Nylon MCTLXXX4DLLL and MCTLXXXX-LLL series controls
6424 Conduit Terminal MCT1XXDLLL, MCTLXXX4DLLL, and MCC1XXDLLL series controls
6433-1 Conduit Clamp MCQ1XXDLLL series controls
6515 Barrel Stop Assembly MCTL1014D and MCC101D series controls
EC89 Wedge Washer Use on each side of instrument panel to angle a control
EC98 9/16" Friction Adjust Wheel Throttle controls using a 9/16" friction nut
M83248/1-006 O-ring MCC1XXDLLL series controls
MS35650-304 Jam Nut MCC1XXDLLL series controls

Dual Throttle Hardware Kit P/N 6408: 

Part Number Description
6408 Kit contains the following:
6271 2 each Slip Fit Conduit Terminal Assemblies
6270 2 each Cable Stop Assemblies
6822 1 each Spring, Red, Left
7235 1 each Spring, Blue, Right
Hex Wrench 1 each


Use Eligibility*:

Part Number Description
XX cable/wire type
LLL part length
MCUX24-LLL Universal Light-Weight Control
MCT1XXDLLL Dual Throttle
MCTLXXX4DLLL Dual Turn-to-Lock
MCTLXXXX-LLL Single Turn-to-Lock
MCC1XXDLLL Dual Control
MCQ1XXDLLL Dual Quadrant Control
WARNING: Cancer and/or Reproductive Harm - www.P65warnings.ca.gov

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OVER 40,000 PARTS IN STOCK WITH SAME DAY SHIPPING IF ORDERED BY 3PM

OUR TEAM PROVIDES THE OLD-FASHIONED CUSTOMER SERVICE THAT YOU EXPECT

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