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  • 217-4017 (ThunderHex Stock 3 feet)
  • 217-4002 (ThunderHex Stock 18 inches)

ThunderHex (2 options)

ThunderHex Stock & Bearings will revolutionize the ways teams use hex shaft.

ThunderHex Stock works in all applications where 1/2" Hex Shaft will work and also includes rounded corners. These rounded corners allow the shaft to pilot inside a 13.75 mm round (ThunderHex) Bearing instead of a standard 1/2" Hex Bearing. This eliminates some difficult manufacturing tolerances and results in a MUCH smoother end result. Simply put, ThunderHex Bearings are the best way to create smooth-running hex shafts, and ThunderHex Stock helps you accomplish this without a lathe.

Also, since you're essentially putting a round peg in a round hole, no more struggling to align the hex of your shaft with the hex hole of your bearing.

All ThunderHex Stock also includes a subtle but very useful feature: a 0.201" hole through the center. This hole provides a clearance fit for a #10 bolt or can be tapped for 1/4-20 bolts. This means that you no longer need a precision lathe to create custom-length, high-strength standoffs; simply cut the ThunderHex shaft to size and tap it with a 1/4-20 (or 1/4-28) thread.

Note: Due to a manufacturing variance, our current inventory is slightly out of tolerance. The diameter of our 18" ThunderHex Stock is oversized by (on average) 0.0003". This results in a press-fit into ThunderHex round bearings. Users who need a looser fit should gently sand the rounded corners of the hex.

Product Name P/N: Availability Price Qty
1/2" ThunderHex Stock (18 inches) 217-4002
In Stock
1/2" ThunderHex Stock (3 feet) 217-4017
In Stock
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You may also be interested in the following product(s)

Product Name P/N: Availability Price Qty
Radial Bearing - 13.75mm (1/2" ThunderHex) x 1.125in x 0.313in 217-4270
In Stock
Flanged Bearing - 13.75mm (1/2" ThunderHex) x 1.125" x 0.313" 217-4006
In Stock
Flanged Bearing - 13.73mm (1/2" Tight Press ThunderHex) x 1.125in x 0.313in (11-pack) 217-4396
In Stock

Example Shaft Modifications

Combine 1/2" Hex Stock, ThunderHex Bearings, 1/2" Hex Bearings, and 1/2" Round Bearings to create a multi-step shaft using only simple machining techniques! Reduce shaft retainers or spacers in your design by creatively integrating bearing shoulders into your designs.

Technical Specifications

  • (1) 1/2" ThunderHex Stock (18 inches)

  • 217-4017:
  • (1) 1/2" ThunderHex Stock (3 feet)
Material Type: 7075 T6 Aluminum

Material Finish: Black Anodize

  • 217-4002 (1/2" ThunderHex Stock 18 inches) - 0.5 lb
  • 217-4017 (1/2" ThunderHex Stock 3 feet) - 0.666 lb