Pedal thread size question
12-10-08 | 03:38 PM
#1
Thread Starter
Newbie
Joined: Aug 2008
Posts: 4
Likes: 0
Pedal thread size question
hello all, I have a mid-80's Fuji Del Ray and I want to replace the pedals with something more modern. Some of the pedals I have looked at said they had 9/16ths thread and I was wondering if that is a standard thread size.
Does 9/16ths refer to the diameter of the threaded part of the bolt or something else?
Thanks for your time.
Does 9/16ths refer to the diameter of the threaded part of the bolt or something else?
Thanks for your time.
12-10-08 | 03:56 PM
#2
You Know!? For Kids!
Joined: Apr 2005
Posts: 6,166
Likes: 29
From: Just NW of Richardson Bike Mart
Bikes: '05 Trek 1200 / '90 Trek 8000 / '? Falcon Europa
Some one piece cranks (usually kids bikes) use 1/2" threads. Most quality bikes are going to take 9/16" threads. And yes, it refers to the diameter of the pedal threads that screw into the crank arm.
https://www.parktool.com/repair/readhowto.asp?id=89
https://www.parktool.com/repair/readhowto.asp?id=89
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12-10-08 | 04:01 PM
#3
Senior Member
Joined: Aug 2005
Posts: 33,657
Likes: 1,119
From: Pittsburgh, PA
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
If your bike has a "three piece" crank it almost certainly takes 9/16"-20 tpi pedals which is the standard for anything but the lowest quality kids and Department Store bikes.
BTW, be aware that all left pedals are left-hand threaded so they threads in and remove the opposite way from common threads.
BTW, be aware that all left pedals are left-hand threaded so they threads in and remove the opposite way from common threads.
12-10-08 | 04:30 PM
#4
Thrifty Bill
Joined: Jan 2008
Posts: 23,639
Likes: 1,106
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
+1 9/16 inch is standard for adult bikes, except for some really cheap ones. Your Fuji will be 9/1 inch.
