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  4. 4-40 Rod Ends

Pushrod Clevis/Keepers/Etc - Choose your pushrod wire size.
.032/ 1mm (.039)/ .047/ 1.5mm (.055)/ 2mm/ 2-56 (.062-.072)/ 4-40
Kwik Link Clevis 4-40 Spring Steel
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Kwik Link Clevis 4-40 Spring Steel

Comes with spring retainer. 2 sets each package.  

The DU-BRO Spring Steel and Solder Kwik-Links are trusted, high-quality connectors designed to give RC builders a strong, secure, and reliable control linkage system. Whether you prefer the proven durability of spring steel or the clean, easy-to-solder design of nickel-plated connectors, these Kwik-Links deliver smooth, dependable performance for any RC aircraft, car, or boat.

Spring Steel Kwik-Links are known for their strength and long-lasting durability. They are ideal for everyday control linkage hook-ups and work perfectly with threaded rods or threaded couplers.

The 2-56 size is made for .072" diameter rods and includes link guards.

The 4-40 size is made for .093" diameter rods and includes spring keepers for a secure hold.

Solder Kwik-Links are nickel plated, giving them a smooth finish that is both strong and easy to solder. This makes them excellent for connections at the servo arm or control horn where a clean, permanent bond is preferred.

The 2-56 solder version fits .072" rods and comes with link guards.

The 4-40 solder version fits .093" rods and includes spring keepers.

Weight per link:

1 gram for #109, #600, #112, #305

1.5 grams for #304, #601, #603, #604

These Kwik-Links are perfect for sport planes, trainers, giant-scale aircraft, and many other RC applications. They help eliminate slop, improve control accuracy, and provide reliable performance through countless flights.

Proudly Made in the USA, DU-BRO Kwik-Links continue to be a favorite among hobbyists for their strength, ease of use, and long-lasting quality.

 


SKU Number: DUB304
Price: $3.29 
Quantity:

Du-Bro 4-40 Safety Lock Kwik-Link. 2-Pack

Du-Bro 4-40 Safety Lock Kwik-Link. 2-Pack

The Safety Lock Kwik-Link offers everything a modeler could want in a clevis and more. Simply put, it s ingenious, a grand slam! Use on 4-40 pre-threaded pushrods. Metal clevis pin with safety retainer. 2 each package. 

Features:

  • Self tapping, no slop threads.
  • Square shank for easy installation & adjustment.
  • Steel plated stepped steel pin - no binding on control horns or servo arms.
  • Steel plated safety lock slides into groove on pin for a secure and solid lock.
  • Safety Lock is mounted in a track system on clevis.

3 sizes available:

  • 2MM
  • 2-56
  • 4-40

Available in 2 & 12 per packages.

Ideal for upgrading or replacement on A.R.F. s.

Super strong, super tough. More strength than you'll ever need.

10% lighter than steel clevis .

Size stamped on safety lock for positive identification.

Weight: 1 gram/Safety Lock Kwik Link

Made in USA

US PAT# 6,364,566

 

 


SKU Number: DUB817
Price: $3.58 
Quantity:

Du-Bro 4-40 Solder Kwik Link Clevis 2-Pack w/spring retainer
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Du-Bro 4-40 Solder Kwik Link Clevis 2-Pack w/spring retainer

Comes with spring retainer (not in photo).  2 sets each package. 

TEMPORARILY OUT OF STOCK 


SKU Number: DUB305
Price: $3.15 
Quantity:

Du-Bro Heavy Duty E-Z Connector 4-40
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Du-Bro Heavy Duty E-Z Connector 4-40

Comes with standard press on nylon and permanent steel press on retainer. Also equipped with socket head fastener to allow for tighter installations. Drilled to clamp onto 4-40 rods.
SKU Number: DUB490
Price: $3.48 
Quantity:

Du-Bro 4-40 Steel Spring Solder-On Kwik-Links for .093 Wire Bulk 12-Pack
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Du-Bro 4-40 Steel Spring Solder-On Kwik-Links for .093 Wire Bulk 12-Pack

Solder Kwik-Links are nickel plated making a strong, attractive and easy to solder connector for servo or horn. 4-40 Solder Kwik-Link designed solder onto .093 diameter wire which is typical size found with rolled 4-40 threads on one end. Spring keepers included, shown in bulk package photo.
SKU Number: DUB604
Price: $16.89 
Quantity:

Sullivan 4-40 Gold-N-Clevises
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Sullivan 4-40 Gold-N-Clevises

Gold-N-Clevises. These tempered steel clevises are the strongest clevises made. They feature an interlocking collar, welded pin and an exclusive steel retaining clip to prevent accidental opening. They are brass or tin plated for easy soldering.

(2) 4-40 Clevises and Retaining Clips

Heat treated tempered steel with retaining clip. 4-40 thread. 2 per package.

TEMPORARILY OUT OF STOCK, COMING SOON!

 


SKU Number: SUL526
Price: $4.29 
Quantity:

Sullivan 4-40 Gold-N-Clevises Bulk 12-Pack
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Sullivan 4-40 Gold-N-Clevises Bulk 12-Pack

Gold-N-Clevises. These tempered steel clevises are the strongest clevises made. They feature an interlocking collar, welded pin and an exclusive steel retaining clip to prevent accidental opening. They are brass or tin plated for easy soldering.

(12) 4-40 Clevises and Retaining Clips

Heat treated tempered steel with retaining clip. 4-40 thread. 12 per package.

 


SKU Number: SUL528
Price: $16.19 
Quantity:

Du-Bro 4-40 Steel Spring Kwik-Links Bulk 12-Pack
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Du-Bro 4-40 Steel Spring Kwik-Links Bulk 12-Pack

Spring Steel Kwik-Links are the tried and true top quality Kwik-Link. Ideal for control linkage hook-up. Use with threaded rods or threaded couplers. 4-40 are for use with .093 dia wire, steel spring keepers are included, shown in package photo.
SKU Number: DUB601
Price: $18.50 
Quantity:

E/Z Link L Bend Keeper .093
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E/Z Link L Bend Keeper .093

Easily snaps over simple L bends to retain your push-rod end in servo or control surface horn. For .093 (2.5mm) wire size. .093 (2.5mm) is the diameter of the smooth portions of 4-40 push-rods.
SKU Number: DUB885
Price: $3.50 
Quantity:

Du-Bro 4-40 Steel Solder on Rod Ends
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Du-Bro 4-40 Steel Solder on Rod Ends

Perfect for many 1/4 scale applications, including strut attachments, flying wires, tail fin stab bracing, and bi-plane aileron connectors. Heavy duty steel and nickel plated. Includes screws and hex nuts. For use with .093 diameter (4-40) threaded rods.

 


SKU Number: DUB303
Price: $6.33 
Quantity:

Du-Bro 4-40 Steel Thread-On Rod Ends
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Du-Bro 4-40 Steel Thread-On Rod Ends

Perfect for many 1/4 scale applications, including strut attachments, flying wires, tail fin stab bracing, and bi-plane aileron connectors. Threaded internally 4-40. Heavy duty nickel plated steel. Includes 4-40 screws and hex nuts. For use with (4-40) threaded rods.
SKU Number: DUB302
Price: $6.33 
Quantity:

Radical RC Flexi-Keepers 4-40 Wire L Bends 4 Pack
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Radical RC Flexi-Keepers 4-40 Wire L Bends 4 Pack

Handy set of 8 black nylon keepers. Fits soft wire used to make 4-40 pushs rod wire.  Black nylon material. Simply bend the end of your pushrod into an "L". Put the L through the servo or control horn. Bend the hand back and clip onto the rod. Simple use, removes and instals quickly. Keeps your push rods from slipping out of the control horns. Light weight, simple and they work great!

Example photo is of our .032 park flier size "Flexi-Keeper" retaining an L bent push rod and a control horn.

Control horn & wire are not included in set.


SKU Number: RRCFLEXIKEEP440
Price: $2.00 
 
Quantity:

Du-Bro 4-40 Kwik Link w/12" Rod
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Du-Bro 4-40 Kwik Link w/12" Rod

Kwik-Link with Rod - Secure, Easy-to-Use RC Control Linkage Solution

The DU-BRO Kwik-Link with Rod is a reliable, easy-to-install control linkage solution designed for RC airplanes, cars, boats, and other radio-controlled models. This all-in-one setup includes a strong, precision-formed rod paired with a DU-BRO Kwik-Link--making it simple to create a secure connection between your servo and control surface. Whether you're building a new model or upgrading an existing one, this product provides dependable control response and long-lasting durability.

The Kwik-Link snaps securely onto standard control horns, providing a tight, smooth connection that resists vibration and flight stress. The included rod is made from high-quality steel, offering excellent rigidity while remaining lightweight. This ensures your control inputs reach the rudder, elevator, aileron, or throttle with accuracy and without unwanted flex. The hardware is easy to adjust, allowing you to fine-tune linkage length and alignment for the best possible control feel.

What makes the DU-BRO Kwik-Link with Rod especially popular is its convenience. Instead of buying components separately, you get a ready-to-use system that installs quickly--even for beginners. The components are corrosion-resistant and designed to perform reliably in glow, electric, and gas-powered models.

Perfect for sport flyers, scale aircraft, park flyers, and custom builds, this linkage solution adds strength, consistency, and ease of use to any RC setup. DU-BRO's trusted engineering ensures smooth operation and a connection you can count on for hundreds of flights or runs.

If you want a simple, dependable way to connect your servos to your control surfaces, the DU-BRO Kwik-Link with Rod is a smart, high-quality choice.

Complete assembly for any control linkage. Allows easy removal for on-the-field adjustments. Features 12" long .072 diameter (#306 - .093 diameter) rod with 3/4" 2-56 (#306 - 4-40) thread one end and Spring Steel Kwik Link and Spring Keeper.

#108 - Weight: 7.5 grams / assembly (Sold each, min. qty 12)

#185 - Weight: 7.5 grams / assembly (5/pkg) See this page

#306 - Weight: 13 grams / assembly (Sold each, min. qty 12)

 


SKU Number: DUB306
Price: $2.99 
Quantity:

DU-BRO Heavy Duty Clevis w/ 4-40 Ball Link - Precision Control Clevis (2-Pack)
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DU-BRO Heavy Duty Clevis w/ 4-40 Ball Link - Precision Control Clevis (2-Pack)

DU-BRO Heavy Duty Clevis w/ 4-40 Ball Link - Precision Control Clevis (2-Pack)

The DU-BRO Heavy Duty Clevis w/ 4-40 Ball Link is designed for RC pilots who want smooth, precise, and reliable control movement in large and powerful aircraft. These clevises are built to deliver "no-slop" performance, making them an excellent choice for demanding control surfaces such as large rudders, elevators, or ailerons.

These clevises are a direct replacement or upgrade for the DU-BRO #3355 and #3365 Heavy Duty Clevis Horn Systems, but they can also be used in your own custom linkage setup. Each clevis includes a 4-40 heavy-duty swivel ball link, which allows the control rod to pivot freely without binding. This free-moving design helps improve control accuracy and reduces stress on your servos--especially important in large-scale or high-performance RC aircraft.

The ball links provide a solid, low-friction connection that stays tight and smooth even through vibration, sharp maneuvers, and high loads. Whether you fly scale airplanes, aerobatic models, sport planes, or giant-scale aircraft, these clevises help ensure clean, predictable control response.

Each package includes 2 clevis assemblies, and they are available in two thread sizes:

#3365 (8-32) - 4 grams each

#3366 (10-32) - 4 grams each

Both versions are extremely strong yet lightweight, making them well-suited for large aircraft that demand durable hardware without unnecessary weight.

Proudly Made in the USA, the DU-BRO Heavy Duty Clevis w/ 4-40 Ball Link provides long-lasting quality, smooth operation, and the dependable performance RC pilots trust.

 


SKU Number: DUB3366
Price: $13.99 
Quantity:

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