The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-10-2021, 06:43 PM   #1
jarrodblake
Registered User
 
jarrodblake's Avatar
 
Join Date: Sep 2017
Location: Patriot IN
Posts: 150
what is the 1975 c30 dually front wheel stud Knurl size?

what is the front wheel stud Knurl size for a 1975 c30 dually? on autozone and advance auto it says its .623 Knurl. I need longer studs in the front to fit my 19.5 wheels. I ordered Dorman Pik-A-Nut 9/16-18 Serrated Wheel Stud, .623" Knurl, 2-7/16" Len 610-300.1. but the knurl is to big can anyone confirm that I need a .623" Knurl and that they just sent me the wrong one, or I need a different size knurl?
jarrodblake is offline   Reply With Quote
Old 09-10-2021, 07:43 PM   #2
kwmech
Senior Member
 
Join Date: Mar 2003
Location: Colfax-California
Posts: 6,822
Re: what is the 1975 c30 dually front wheel stud Knurl size?

How much longer does the stud need to be? According to my dorman book the .623 is correct. The 610.300 stud is longer but is missing the first 3 threads. The next longer size up is a 610-347 with a .625 knurl which will press in fine. It is shy of 3'' long by 1/8''

Last edited by kwmech; 09-10-2021 at 07:48 PM.
kwmech is offline   Reply With Quote
Old 09-10-2021, 08:17 PM   #3
jarrodblake
Registered User
 
jarrodblake's Avatar
 
Join Date: Sep 2017
Location: Patriot IN
Posts: 150
Re: what is the 1975 c30 dually front wheel stud Knurl size?

Quote:
Originally Posted by kwmech View Post
How much longer does the stud need to be? According to my dorman book the .623 is correct. The 610.300 stud is longer but is missing the first 3 threads. The next longer size up is a 610-347 with a .625 knurl which will press in fine. It is shy of 3'' long by 1/8''
Thanks for the reply I finally got my digital caliper working, the circuit board was corroded, they sent me the wrong stud. the stud they sent was .655. That said the stud they sent was the perfect length and thread. now I just need them to get back to me before I order the full set with the correct knurl size.
jarrodblake is offline   Reply With Quote
Old 09-10-2021, 08:45 PM   #4
kwmech
Senior Member
 
Join Date: Mar 2003
Location: Colfax-California
Posts: 6,822
Re: what is the 1975 c30 dually front wheel stud Knurl size?

The 610-347 is 3/8'' longer
kwmech is offline   Reply With Quote
Old 09-10-2021, 10:30 PM   #5
jarrodblake
Registered User
 
jarrodblake's Avatar
 
Join Date: Sep 2017
Location: Patriot IN
Posts: 150
Re: what is the 1975 c30 dually front wheel stud Knurl size?

Quote:
Originally Posted by kwmech View Post
The 610-347 is 3/8'' longer
Ill order one and see if the length works better thanks.
jarrodblake is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:05 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com