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Wheel stud sizes...?

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Old Apr 8, 2006 | 12:00 AM
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Default Wheel stud sizes...?

So how do wheel stud sizes work? From what I've found a stock wheel stud is 12mmx1.5 and 2" long. Is that the same as a 1/2x20x2 stud? What about knurl diameter, knurl length and underhead length? I was looking through Summit Racing's selection, a bunch of the wheel studs they have list a bunch of these measurements. What are the stock studs?
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Old Apr 8, 2006 | 01:18 AM
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Originally Posted by Spurkey
So how do wheel stud sizes work? From what I've found a stock wheel stud is 12mmx1.5 and 2" long. Is that the same as a 1/2x20x2 stud? What about knurl diameter, knurl length and underhead length? I was looking through Summit Racing's selection, a bunch of the wheel studs they have list a bunch of these measurements. What are the stock studs?

our stock knurl diameter is .509 and it is a 12 mm with a 1.5 thread pitch and the stock length is 1.5 inch
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Old Apr 8, 2006 | 04:03 PM
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Cool, thanks. Is 12mm x 1.5 the same as a 1/2" x 20 stud?
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Old Apr 8, 2006 | 11:41 PM
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1/2 x 20 stud is a little bigger in diameter. a little over a 1/2 a millimeter larger in diameter
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Old Apr 9, 2006 | 05:24 PM
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ARP Number 100-7708

.509 knurl dia
2.50 length
.315 knurl length
M12x1.5

ARP Part number 100-7713

.509 knurl dia.
3.25 length
.315 knurl length
M12x1.5

HTH
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