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AndyMark's Summer Hours:  Monday - Thursday, 8:00 am - 5:00 pm ET. Closed Fridays through July 31, 2026.
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AndyMark's Summer Hours:  Monday - Thursday, 8:00 am - 5:00 pm ET. Closed Fridays through July 31, 2026.
20% OFF! Use code SAVE20 to save 20% on select products!

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Standard 20 DP Gears - am-20DPGears_1 - Image-1 - migrated

Standard 20 DP Gears

$12.80 USD - $28.00 USD
$12.80 USD
$12.80 USD - $28.00 USD
$12.80 USD - $28.00 USD
$12.80 USD
68 Options available!

20 DP gears are the most common gears used in FIRST Robotics Competition gearboxes. Description Specifications Documentation Want to rep...

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$12.80 USD - $28.00 USD
$12.80 USD
$12.80 USD - $28.00 USD
$12.80 USD - $28.00 USD
$12.80 USD
Save up to 59% Save %

20 DP Pinion Gears

$11.70 USD - $14.50 USD
$11.70 USD - $14.50 USD
$11.70 USD
$5.30 USD - $14.50 USD
$5.30 USD - $14.50 USD
$5.30 USD
13 Options available!

Use these 20DP Pinion Gears by installing on a motor shaft to transfer the rotational output from the motor to other mechanical systems such as dri...

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$11.70 USD - $14.50 USD
$11.70 USD - $14.50 USD
$11.70 USD
$5.30 USD - $14.50 USD
$5.30 USD - $14.50 USD
$5.30 USD
Save up to 59% Save %
Spur Gear Stock - gs-20-0_6-11-1215-1 - 2) Tooth Count=11, 1) Tooth Profile=0.6 MOD, 20° PA, 3) Material=Steel - migrated
Spur Gear Stock - am-GearStock_1 - Image-1 - migrated
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Spur Gear Stock

$22.00 USD - $340.00 USD
$22.00 USD
$22.00 USD - $340.00 USD
$22.00 USD - $340.00 USD
$22.00 USD
43 of 44 Options available!

Gear stock is perfect for creating custom sized gears. Description Specifications Documentation Gear stock is perfect for creating custom ...

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$22.00 USD - $340.00 USD
$22.00 USD
$22.00 USD - $340.00 USD
$22.00 USD - $340.00 USD
$22.00 USD
Save up to 50% Save %
14 Tooth 20 DP 0.375 in. Hex Bore Steel Gear - am-2354 - migrated

14 Tooth 20 DP 0.375 in. Hex Bore Steel Gear, 0.4 in. width

$15.40 USD - $15.40 USD
$15.40 USD
$15.40 USD
$15.40 USD - $15.40 USD
$15.40 USD

am-2354

Here is a 14 tooth gear with a 3/8 in. hex bore Specifications Documentation Bore: 0.375 in. [9.5 mm] (3/8) Hex Diametral Pitch: 20 ...

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$15.40 USD - $15.40 USD
$15.40 USD
$15.40 USD
$15.40 USD - $15.40 USD
$15.40 USD
28 Tooth 20 DP 0.375 in. Hex Bore Steel Gear - am-0025_2 - Image-2 - migrated
28 Tooth 20 DP 0.375 in. Hex Bore Steel Gear - am-0025_1 - Image-1 - migrated
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28 Tooth 20 DP 0.375 in. Hex Bore Steel Gear

$13.80 USD
$13.80 USD - $13.80 USD
$13.80 USD
$7.00 USD
$7.00 USD - $7.00 USD
$7.00 USD

am-0025

Description Specifications Documentation This is a 28 tooth Steel gear that has a 0.375in. Hex bore. Bore: 0.37...

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$13.80 USD
$13.80 USD - $13.80 USD
$13.80 USD
$7.00 USD
$7.00 USD - $7.00 USD
$7.00 USD
Save 49% Save %
56 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3491_2 - Image-2 - migrated
56 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3491_1 - Image-1 - migrated

56 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear

$32.00 USD - $32.00 USD
$32.00 USD
$32.00 USD
$32.00 USD - $32.00 USD
$32.00 USD
am-3491

Specifications Documentation Bore: 0.875 in. Round Diametral Pitch: 20 Face Width: 0.438 in. Finish: Zinc Plated Material: 4140...

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$32.00 USD - $32.00 USD
$32.00 USD
$32.00 USD
$32.00 USD - $32.00 USD
$32.00 USD
15 Tooth 20 DP 0.375 in. Hex Bore Steel Gear - am-0451 - migrated
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15 Tooth 20 DP 0.375 in. Hex Bore Steel Gear

$11.70 USD
$11.70 USD - $11.70 USD
$11.70 USD
$6.40 USD
$6.40 USD - $6.40 USD
$6.40 USD
am-0451

15 Tooth 20DP Gear Specifications Documentation Bore: 0.375 in. [9.5 mm] (3/8) Hex Diametral Pitch: 20 Face Width: 0.46 in. Finish...

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$11.70 USD
$11.70 USD - $11.70 USD
$11.70 USD
$6.40 USD
$6.40 USD - $6.40 USD
$6.40 USD
Save 45% Save %
40 Tooth 20 DP 0.375 in. Hex Bore Steel Gear - am-0024 - migrated
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40 Tooth 20 DP 0.375 in. Hex Bore Steel Gear

$18.10 USD
$18.10 USD - $18.10 USD
$18.10 USD
$12.80 USD
$12.80 USD - $12.80 USD
$12.80 USD

am-0024

Specifications Documentation Bore: 0.375 in. [9.5 mm] (3/8) Hex Diametral Pitch: 20 Material: 4140 Steel Pitch Diameter: 2 in. ...

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$18.10 USD
$18.10 USD - $18.10 USD
$18.10 USD
$12.80 USD
$12.80 USD - $12.80 USD
$12.80 USD
Save 29% Save %
50 Tooth 20 DP 1.125 in. Round Bore Steel Bolt Circle Bearing Gear - am-3209 - migrated
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50 Tooth 20 DP 1.125 in. Round Bore Steel Bolt Circle Bearing Gear

$24.00 USD
$24.00 USD - $24.00 USD
$24.00 USD
$10.60 USD
$10.60 USD - $10.60 USD
$10.60 USD
am-3209

This 50 tooth gear features the same six hole bole circle featured on AndyMark wheels. Description Specifications Documentation This gear...

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$24.00 USD
$24.00 USD - $24.00 USD
$24.00 USD
$10.60 USD
$10.60 USD - $10.60 USD
$10.60 USD
Save 56% Save %
56 Tooth 20 DP 0.5 in. Round Bore Steel Bolt Circle Gear - am-3712 - migrated
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56 Tooth 20 DP 0.5 in. Round Bore Steel Bolt Circle Gear

$29.00 USD - $29.00 USD
$29.00 USD
$29.00 USD
$29.00 USD - $29.00 USD
$29.00 USD
am-3712

This 56 tooth gear is made like many of our standard 20 DP gears, but features a bolt circle for our standard 1.875 in. bolt circle. Description ...

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$29.00 USD - $29.00 USD
$29.00 USD
$29.00 USD
$29.00 USD - $29.00 USD
$29.00 USD
Sold out
40 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3490_2 - Image-2 - migrated
40 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3490_1 - Image-1 - migrated

40 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear

$19.70 USD - $19.70 USD
$19.70 USD
$19.70 USD
$19.70 USD - $19.70 USD
$19.70 USD
am-3490

Specifications Documentation Bore: 0.875 in. Round Diametral Pitch: 20 Face Width: 0.438 in. Finish: Zinc Plated Material: 4140...

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$19.70 USD - $19.70 USD
$19.70 USD
$19.70 USD
$19.70 USD - $19.70 USD
$19.70 USD
32 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3489_2 - Image-2 - migrated
32 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3489_1 - Image-1 - migrated
Save 54% Save %

32 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear

$23.00 USD
$23.00 USD - $23.00 USD
$23.00 USD
$10.60 USD
$10.60 USD - $10.60 USD
$10.60 USD
am-3489

Specifications Documentation Bore: 0.875 in. Round Diametral Pitch: 20 Face Width: 0.438 in. Finish: Zinc Plated ...

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$23.00 USD
$23.00 USD - $23.00 USD
$23.00 USD
$10.60 USD
$10.60 USD - $10.60 USD
$10.60 USD
Save 54% Save %
52 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3541_2 - Image-2 - migrated
52 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3541_1 - Image-1 - migrated
Save 40% Save %

52 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear

$30.00 USD
$30.00 USD - $30.00 USD
$30.00 USD
$18.10 USD
$18.10 USD - $18.10 USD
$18.10 USD

am-3541

Specifications Documentation Bore: 0.875 in. Round Diametral Pitch: 20 Face Width: 0.438 in. Finish: Zinc Plated Material: 4140...

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$30.00 USD
$30.00 USD - $30.00 USD
$30.00 USD
$18.10 USD
$18.10 USD - $18.10 USD
$18.10 USD
Save 40% Save %
36 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3539_2 - Image-2 - migrated
36 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3539_1 - Image-1 - migrated
Save 47% Save %

36 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear

$24.00 USD
$24.00 USD - $24.00 USD
$24.00 USD
$12.80 USD
$12.80 USD - $12.80 USD
$12.80 USD

am-3539

Specifications Documentation Bore: 0.875 in. Round Diametral Pitch: 20 Face Width: 0.438 in. Finish: Zinc Plated Material: 4140...

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$24.00 USD
$24.00 USD - $24.00 USD
$24.00 USD
$12.80 USD
$12.80 USD - $12.80 USD
$12.80 USD
Save 47% Save %
46 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3540_2 - Image-2 - migrated
46 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear - am-3540_1 - Image-1 - migrated

46 Tooth 20 DP 0.875 in. Round Bore Steel Dog Pattern Gear

$28.00 USD - $28.00 USD
$28.00 USD
$28.00 USD
$28.00 USD - $28.00 USD
$28.00 USD
am-3540

Specifications Documentation Bore: 0.875 in. Round Diametral Pitch: 20 Face Width: 0.438 in. Finish: Zinc Plated Material: 4140...

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$28.00 USD - $28.00 USD
$28.00 USD
$28.00 USD
$28.00 USD - $28.00 USD
$28.00 USD
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