Main Categories

    1/2 in. Hex Collar Clamps, Silver Thin (0.25in) - 1 part

    These custom designed collar clamps have been designed specifically with FIRST Robotics Competition teams in mind. The one-piece collar clamp is a nice fractional 1/2 in. width to make shaft stackups easy. The clamping force is provided by a 10-32 socket head screw, which is bigger than most used in the competition marketplace.  This provides a high-strength clamping solution that shouldn't strip out when you need it most. You can even replace the 10-32 screw if it becomes lost with the screws historically used in the AM14U family of chassis. These thoughtfully designed collar clamps also have small bosses on each side. This allows these collar clamps to be installed directly adjacent to an FR8ZZ Round or FR8ZZ Hex bearing without rubbing on the outer races for smooth operation.

    MFR Part #: am-1635
    Availability: 124 in stock
    Write your own review
    • Product can be reviewed only after purchasing it
    • Only registered users can write reviews
    • Bad
    • Excellent
    Customers who bought this item also bought

    6 Gauge Compression Lug Connector 1/4 Stud Hole BURNDY #: YAZV6CTC14FX

    (148 In stock)

    This is a heavy-duty compression lug from BURNDY for 06 AWG wire. This compression log can be easily crimped with the PRO-CRIMP Crimp Tool (am-3326).



    • Gauge: 06 AWG
    • Hole Size For Stud: 0.25 in.
    • Material: Copper
    • Overall Length: 2.03 in.
    • Tongue Width: 0.48 in.
    • Weight: 0.01 lbs
    • Wire Strip Length: 1.18 in.

    Split Collar Clamp 1/2 in. Hex HD

    (227 In stock)

    This new custom designed collar clamp has been designed specifically with FIRST Robotics Competition teams in mind. This product is Out of Stock until Mid March

    40 Amp Snap Action Breaker

    (In stock)

    Snap action breakers are used commonly in mobile robot applications such as FIRST Robotics Competition power distribution boards. We offer several amperage versions. 



    • Manufacturer: Snap Action
    • Style: MINI, Auto-resetting
    • Voltage: Up to 50V DC

    4" Compliant Wheel, 1/2" Hex Bore, 35A Durometer, Green

    (In stock)

    Compliant wheels are not intended for moving robots, but moving objects. Compliant wheels give way to allow rigid objects to be manipulated easily. A line of multiple wheels on a driven hex axle creates a very effective roller that ignores variations in the objects being driven. This makes for high-performance intakes and internal conveyors.

    Different durometer ratings give each wheel unique characteristics. Green wheels (35A durometer) are the softest and most compliant around objects, while orange (40A), maroon (45A), blue (50A), and black (60A) wheels are increasingly firm. The increased firmness also allows the latter wheels to carry a higher RPM rating. Check out the downloads tab for a chart showing wheels and their maximum RPM. 


    Please note maroon wheels are only intended for use in FTC. If more powerful motors are used to drive it the spokes may fail.





    • Bore: 1/2 in. Hex, 3/8 in. Hex, Nub Bore, 5 mm Hex
    • Diameter: 4 in.
    • Durometer: 35A (Green), ⠀40A (Orange), ⠀45A (Maroon), ⠀50A (Blue), ⠀60A (Black), ⠀80A (Gray)
    • Hole Pattern: Qty 4 3.5 mm Holes on a 16 mm Circle for 8 mm bore wheels
    • Material: TPU, ⠀Polycarbonate
    • Maximum RPM: 3000-9000
    • Weight: 0.228 - 0.269 Lbs
    • Width: 1 in.


    Layout Print(s)

    am-3562 4IN 375Hex Compliant Wheel REV3.PDF

    am-3563 4IN 8mm Compliant Wheel REV4.PDF

    am-3480 4IN 500Hex Compliant Wheel REV3.PDF

    am-4538 4IN 5mm Hex Compliant Wheel.PDF

    CAD File(s)

    am-3562 4IN 375Hex Bore Compliant Wheel REV2.STEP

    am-3563 4IN 8mm Round Compliant Wheel REV2.STEP

    am-3480 4IN 500Hex Bore Compliant Wheel REV2.STEP

    am-4538 4IN 5mm Hex Compliant Wheel.STEP


    4 inch Compliant Wheel Expansion.pdf

    AM14U4 Front Bumper Bracket

    (In stock)

    This bracket is used to assist mounting bumpers to the front and back of an AM14U4 chassis in accordance with the 2019 FRC bumper rules.



    • Flange Depth: 1.00 in.
    • Height: 1.93 in.
    • Material: 5052 Aluminum

    Andymark Hubs 1/2 in. Hex

    (In stock)

    Each hub now has a "flower" pattern that fits and keys into our 42T 5 mm HTD Pulley, which means you are no longer constrained to our legacy 500EX Hex Hub for compatibility with this pulley. Every hub still maintains a closed-profile hole for maximum strength. Every shaft hub has been designed with bearing bosses on both sides that have been sized appropriately for the mating bearings that would pair with the bore through the hub, which means you can run each hub right against a bearing with no need for extra spacers. All of these hubs are also made from 7075-T6 aluminum, which is much stronger than the previously used 6061-T6, 6005, and 6105 alloys from our older designs. Where possible, the shoulder on shaft hubs was reduced to 7/8" in diameter for an easier fit with our molded plastic wheels, while still maintaining a precise 1.125" diameter boss for locating in wheels, sprockets, gears, and more. 


    The holes are evenly spaced on a 1.875 in. circle and 0.201 inches in diameter. That's a perfect size for #10 bolts!


    Learn how to attach these hubs to AndyMark wheels by watching this video!