5/16" Pop Pins - Dual Action T-handle - Twist & Lock Mechanism will solve the problem of a loose inner tube in telescopic adjustment. A small amount of free tolerance is required for a seat adjustment (for example) to telescope in and out. This same tolerance causes a loose feeling and allows the seat to rotate and rattle while in use. This dual action pop pin is 2 mechanisms in one:
Simply pull on T-handle to disengage spring-loaded pin and move to desired adjustment. Allow spring loaded pin to engage in new hole. Then twist T-handle clockwise to torque down on the inner tube against the inside walls of the outer tube to stabilize the set up. This double action prevents seating and other adjustments from moving around during use. Use the supplied M18-1.5 Metric threaded bulk head, or machine your own solution.
Spring-loaded pop pin works like other pop pins except T-handle has a thread (see inset photo within main photo) tightens down on inner tube to prevent rattling
Includes weld-on bulk head that has a .970" OD shoulder to help with locating within 1" hole in outer tube wall before welding
T-handle is made of tough composite material and is 2" wide to allow a full 2-finger grip to pull and twist
T-handle is permanently bonded to pin body so it won't loosen while torquing down on handle clockwise or counter clockwise
Pop pin body is powder coated black and needs no additional finishing.
Internal steel parts are plated to prevent rust
Each pop pin includes an unpainted threaded bulk head that has matching female M20-1.5 metric thread
Diameter of engagement portion of center pin: 5/16"
Steel pop pin body has a pair of wrench flats machined at the end so a 17 mm open end wrench can be used to tighten pop pin into bulk head during assembly of your work piece
Weld-on bulk head can be installed into tube wall range of .060" to 1/4" thick
Pop pin has a serrated pattern that grips the inner tube when T-handle is tightened down for a positive grip (see inset photo within main photo)
Ask about additional discounts for large quantity purchases