1/2" Screw In Wheel Stud Torque
1/2" Screw In Wheel Stud Torque
Looking for torque specs for my 1/2-20 screw in wheel studs from ARP. Didn't come with any instructions so I checked on ARP's website and for a 1/2-20 fastner at 190,000 psi tensile strength, with moly lube, it says to torque down to 107ft lbs. I'm curious as to if this information is correct or not since it seems a tad high so i just wanted to know what everybody else with 1/2" screw in studs torqued their fastners to.
Also I did NOT go off ARP's torque specs for 1/2" studs because the fastner is not really a 1/2" stud, it's a 1/2" bolt. Am i correct about doing this?
Also I did NOT go off ARP's torque specs for 1/2" studs because the fastner is not really a 1/2" stud, it's a 1/2" bolt. Am i correct about doing this?
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Posts: 13,622
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: 1/2" Screw In Wheel Stud Torque
are you asking about torqueing them into the axle flange? or the lug nut torque?
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: 1/2" Screw In Wheel Stud Torque
race car parts buddy....
ARP opens on monday to call them.
ARP opens on monday to call them.
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: 1/2" Screw In Wheel Stud Torque
They will be a grade 8 bolt. Torque to 120 pounds.
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Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: 1/2" Screw In Wheel Stud Torque
get it on yet? I want to see pics.
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: 1/2" Screw In Wheel Stud Torque
they're above grade 8 bolts so 90-107 ft/lbs is fine.
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