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ThunderHex Stock & Accessories

In stock
Compatible with products and accessories.
FRC legal.

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

ThunderHex Stock works in all applications where 3/8" or 1/2" Hex Shaft will work and also includes rounded corners. These rounded corners allow the shaft to pilot inside a 10.25 or 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.

Thunderhex Bearings
Grouped product items
Product Name SKU Qty
10.25mm (3/8" ThunderHex) ID x 0.875" OD x 0.280" WD (Flanged Bearing) 10.25mm (3/8" ThunderHex) ID x 0.875" OD x 0.280" WD (Flanged Bearing)
$2.99
217-5829
10.25mm (3/8" ThunderHex) ID x 0.875" OD x 0.280" WD (Flanged Bearing) (10-Pack) 10.25mm (3/8" ThunderHex) ID x 0.875" OD x 0.280" WD (Flanged Bearing) (10-Pack)
$29.99
217-6721
.302" (1/4" ThunderSquare) ID x 0.875" OD x 0.280" WD (Flanged Bearing) .302" (1/4" ThunderSquare) ID x 0.875" OD x 0.280" WD (Flanged Bearing)
$2.99
217-5830
.302" (1/4" ThunderSquare) ID x 0.875" OD x 0.280" WD (Flanged Bearing) (10-Pack) .302" (1/4" ThunderSquare) ID x 0.875" OD x 0.280" WD (Flanged Bearing) (10-Pack)
$29.99
217-6722
13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Flanged Bearing) (12-Pack) 13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Flanged Bearing) (12-Pack)
$54.99
217-6718
13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Flanged Bearing) 13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Flanged Bearing)
$4.99
217-4006
13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Radial Bearing) 13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Radial Bearing)
$4.99
217-4270
13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Radial Bearing) (13-Pack) 13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Radial Bearing) (13-Pack)
$59.99
217-6719
3/8" Hex Thunderhex Stock
Grouped product items
Product Name SKU Qty
3/8" Hex x .165" ID ThunderHex Stock (36") 3/8" Hex x .165" ID ThunderHex Stock (36")
$17.99
217-5837
1/2" Hex Thunderhex Stock
Grouped product items
Product Name SKU Qty
1/2" Hex x 0.201" ID ThunderHex Stock (18") 1/2" Hex x 0.201" ID ThunderHex Stock (18")

Discontinued. Available while supplies last.

$9.99
217-4002
Out of stock
1/2" Hex x 0.201" ID ThunderHex Stock (36") 1/2" Hex x 0.201" ID ThunderHex Stock (36")
$15.99
217-4017
Thunderhex Bushings
Grouped product items
Product Name SKU Qty
10.25mm (3/8" ThunderHex) ID x 0.625" OD x 0.313" WD (Plastic Flanged Bushing) (10-Pack) 10.25mm (3/8" ThunderHex) ID x 0.625" OD x 0.313" WD (Plastic Flanged Bushing) (10-Pack)
$7.99
217-7345
10.25mm (3/8" ThunderHex) ID x 0.625" OD x 0.313" WD (Bronze Flanged Bushing) (6-Pack) 10.25mm (3/8" ThunderHex) ID x 0.625" OD x 0.313" WD (Bronze Flanged Bushing) (6-Pack)
$12.99
217-7346
13.75mm (1/2" ThunderHex) ID x 0.625" OD x 0.313" WD (Plastic Flanged Bushing) (10-Pack) 13.75mm (1/2" ThunderHex) ID x 0.625" OD x 0.313" WD (Plastic Flanged Bushing) (10-Pack)
$8.99
217-7347
13.75mm (1/2" ThunderHex) ID x 0.625" OD x 0.313" WD (Bronze Flanged Bushing) (6-Pack) 13.75mm (1/2" ThunderHex) ID x 0.625" OD x 0.313" WD (Bronze Flanged Bushing) (6-Pack)
$16.99
217-7348

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.

217-5837:
(1) 3/8" ThunderHex Stock (36")

217-4002:
(1) 1/2" ThunderHex Stock (18")

217-4017:
(1) 1/2" ThunderHex Stock (3")

217-7345
(10) 10.25mm (3/8 ThunderHex) ID x 0.625" OD x 0.313" WD (Plastic Flanged Bushing)

217-7346
(6) 10.25mm (3/8' ThunderHex) ID x 0.625' OD x 0.313' WD (Bronze Flanged Bushing)

217-7347
(10) 13.75mm (1/2" ThunderHex) ID x 0.625" OD x 0.313" WD (Plastic Flanged Bushing)

217-7348
(6)13.75mm (1/2" ThunderHex) ID x 0.625" OD x 0.313" WD (Bronze Flanged Bushing)

ThunderHex Stock
7075 T6 Aluminum

Bushings
217-7345 / 217-7347
Acetal

217-7346 / 217-7348
Oil Impregnated Bronze

ThunderHex Stock
Black Anodized

ThunderHex Stock
217-4002 (1/2" ThunderHex Stock 18") - 0.3 lb
217-5837 (3/8" Hex x .165" ID ThunderHex Stock 36") - .40 lb
217-4017 (1/2" ThunderHex Stock 36") - 0.666 lb

"Thunder" Bearings
(217-5830) .302" (1/4" ThunderSquare) ID x 0.875" OD x 0.280" WD (Flanged Bearing) : 0.04 lb
(217-5829) 10.25mm (3/8" ThunderHex) ID x 0.875" OD x 0.280" WD (Flanged Bearing) : 0.04 lb
(217-4006) 13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Flanged Bearing) : 0.05 lb
(217-4270) 13.75mm (1/2" ThunderHex) ID x 1.125" OD x 0.313" WD (Radial Bearing) : 0.048 lb

ThunderHex Bushings
0.004lbs each

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