What is the Difference Between Left-Handed and Right-Handed Threads?

Question

Question:

For rear center cap hub why right hand or left hand thread

asked by: JAMES T

0

Expert Reply:

Even though most threads on bolts use right-handed bolts/nuts, some special scenarios warrant a left-handed thread. When wheel accessories like the Phoenix USA Rear Wheel Center Cap - 8-1/4" Hub Diameter - Center Hole Mount - Left Thread # PXQ1020L use a left-handed thread, it is to avoid the added torque from bumps and rough terrain on your wheels. With these forces, right-handed bolts/nuts tend to come loose from those particular movements. For a hub cap, it is recommended to use a left-handed bolt/nut if the option is available (like it is on the hub # PXQ1020L).

Also, it is important to note that the threads are from the bolts that hold the cap in place; not on the cap itself.

expert reply by: Bob C

0

Answer 1

As far as a left-threaded or right-threaded cap for your motorhome, right-handed threads run clockwise, and left-handed threads run counterclockwise. The reason for this difference is that some applications of screws can come loose with the motion of…

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Answer 2

The Phoenix USA Wheel Center Cap part #PXQ2010 has right hand threads (threads run clockwise) but that does not mean there is a left and right hand cap. You will need to check the bracket of your existing cap to see if there is a L at the end of…

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Answer 3

For a right hand thread you'll need part #PXQ2020XL and for a left hand thread you'll need part #PXQ2020L. Both of these are designed for 8-1/4" hub diameters and a 10 lug pattern.

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Answer 4

It definitely sounds like you are needing something like Phoenix USA Rear Wheel Center Cap - 8-1/4" Hub Diameter - Center Hole Mount - Right Thread #PXQ2020XL. Just a few things to check to confirm fitment, this fits 10 lug on 285mm pattern and…

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Answer 5

Manufacturers do not list the parts they use on their RV's so you'll need to measure the bolt pattern and hub size of your current setup to determine the compatibility of the Phoenix USA Rear Wheel Center Cap #PXQ2020XL. The #PXQ2020XL fits a…

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Answer 6

You will need either the Phoenix USA Rear Wheel Center Cap Right Hand Thread #PXQ2010XL or Left Hand Thread #PXQ2010L if you have a 6-1/2" wide hub. Otherwise you will need the Right Hand Thread #PXQ2020 or Left Hand Thread #PXQ2020L if you have…

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Answer 7

The Phoenix USA Wheel Center Cap part #PXPH1843 is a replacement for the Phoenix USA Wheel Center Cap part #PXQ1009 which is for a 6-1/2" diameter axle or the Phoenix USA Wheel Center Cap part #PXQ1020 which is for a 8-1/4" diameter axle.…

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Answer 8

The Phoenix USA Rear Wheel Center Cap - 8-1/4" Hub Diameter - Center Hole Mount - Right Thread #PXQ2020XL fits the rear motorhome wheels that has a hub diameter of 8-1/4 inches and a bolt pattern of 10 on 285 millimeters. When it comes to the…

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Answer 9

The correct installation tool for the Phoenix USA #PXQ2010 Wheel Center Cap is part #PHX54FR.

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Answer 10

The diameter of the center indention (hole) on the Phoenix USA Baby Moon Hubcap #PXQ1402B is 3" from outside beveled edge to outside beveled edge and 2.7" across the flat surface inside the beveled edges. I have included a picture to help…

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Answer 11

Hey Chuck, For that wheel size we offer the Phoenix USA Baby Moon Hubcap #PXQ1402B and #PXQ1401B. These hubcaps are 8-7/8" in diameter and fit a 221mm hub bore with 4-spline hub. They are slightly different in design with one have a smaller…

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Answer 12

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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What is the Difference Between Left-Handed and Right-Handed Threads?

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