ARP 100-7730 is a 5-piece wheel stud kit designed to convert a C5 Corvette (1997–2004) to 1/2”-20 wheel studs using a short stud length. It’s built for performance-minded installs where you want stronger, more common 1/2”-20 hardware, while maintaining a compact stud profile suited for the C5 hub/wheel setup. The knurl dimensions and hole-size tolerances are critical here—proper fit comes from matching the hub material (cast iron/steel vs. aluminum) and drilling/reaming to the correct range so the knurl seats securely.

This kit uses a 0.509" knurl diameter with a 0.300" knurl length, along with a 0.300" nose length to help start the stud during installation. If you’re installing into an aluminum hub, note the recommended 12.5mm (0.492") drill size is not a common standard bit size; you’ll typically drill undersize and then use an appropriately sized reamer to bring the hole into spec so the stud presses in correctly.

1.950" Under-head length
1/2-20 Thread size
0.300" knurl length

Specs

Application: Corvette C5 (1997–2004), 1/2” conversion (short)
Quantity: 5 wheel studs
Thread size: 1/2-20
Knurl diameter: 0.509"
Under-head length (UHL): 1.950"
Knurl length: 0.300"
Nose length: 0.300"
Cast iron/steel hub hole size: 0.493"–0.503"
Drill bit size: 1/2" (0.500")
Aluminum hub hole size: 0.493"–0.499"
Drill size: 12.5mm (0.492") then ream to final size (nearest standard bit is too small)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

ARP 100-7730 Specifications

KEY SPECS
MFG. Part #	100-7730
Brand	ARP
Thread Pitch	1/2"-20

GENERAL
Knurl Diameter	0.509"
Knurl Length	0.300"
Thread Length	1.350"
Material Type	Steel
Sold in Quantity	Set

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Fitment

1997-2004 Chevy Corvette