Pedal thread size?Home › Forum › Bike Forum › Pedal thread size?OverviewBike ForumChat ForumFor SaleWantedForum HelpClassified RulesViewing 7 posts - 1 through 7 (of 7 total)Pedal thread size? worsMemberis it 9/16 U.N.F? Posted 5 years ago The PinksterSubscriberStandard MTB threads are 9/16″. A lot of BMX threads are (or certainly were) 1/2″.Not sure about roadies but I think they are 9/16″ too. Posted 5 years ago trail_ratMembermtb are 9/16 UNC -20 tpi – left and right threads .old bmx and kids bike are 1/2 UNC – 20 TPI left and right threads. Posted 5 years ago robSubscriber9/16 x 20tpi for road and mtb Left-hand thread on left pedal Posted 5 years ago worsMembercheers ta Posted 5 years ago orangest4Member9/16″ x 20 tpi UN left and right hand. Posted 5 years ago MacavityMemberBSC BS 811:1950: British Standard Cycle threads (DIN 79012) Posted 5 years ago Viewing 7 posts - 1 through 7 (of 7 total)The topic ‘Pedal thread size?’ is closed to new replies.