Hex Head Expanding Pins
Supplier: Carr Lane Mfg Co
FEATURES: Precision alignment pin that expands to tighten up hole
clearance (.004" minimum expansion on the smallest diameter, up to .010"
minimum expansion on the largest diameter). The pin is an assembly of
female split bushings separated by male segments, all on a center
spindle, that expands when drawn together. This assembly provides
excellent shear strength, comparable to a solid pin. Expanding Pins can
be installed in through holes or blind holes. Made in USA.
SIZES: Available in the following pin diameters, each in a choice of several lengths — see Dimensions page for part numbers:
Tightening the hex nut with a wrench expands the pin diameter to take
up slack and secure the pin in place. Hold center spindle stationary
with a hex wrench while tightening.
Choose a proper pin length such that no split bushings extend beyond the
installation hole. All bushings must be contained by the hole in order
to exert full pressure and avoid over-expanding the bushings.
Split bushings, male segments, and spacers > 17-4PH stainless,
17-4PH stainless, Rc 40 min, passivated, dry film lube. Center spindle
> Rc 36-40, passivated, dry film lube. Barrel nut and washer >
17-4PH stainless, passivated, dry film lube. Hex nut > 17-4PH
stainless, with locking element.
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