Dirt or residues from over-lacquers, inks, and paper particles can build up, absorb heat, distort the knurl
pattern, and lead to an uneven seal.
The gripping-type knurl application is the most common.
All too often, the "mind set" is to roll form whenever a print calls out a knurl pattern.
The manufacturing volume of such tools or parts is generally low and the performance of the knurl is critical.
It took a few tries to arrive at the right knurl
A serrated clinching ring, knurl
, ribs or hex head prevents the fastener from rotating in the metal when tightening torque is applied to mating hardware.
Larger sizes, keyways, flats, hinges, threads, knurls
and other characteristics can be added.
These fasteners broach by pressing the fastener's knurled
section into a slightly smaller hole in the board, forcing the knurls
to cut into the board, and installing permanently.
The marks may be nothing more than primitive knurls
Thermal sprays and knurls
both wear like any other surface, however once they do begin to wear, there is no way to refurbish the rollers without doing a complete overhaul including removing the drums from the pit or dyno frame which is costly and time consuming.
In addition, they can be machined with drilled and tapped face holes and OD treatments such as flats, grooves, or knurls
These collars are offered in standard one- and two-piece styles, and can be customized to OEM design requirements with special threads, component mounting holes, knurls
, flats, and other features.