Tag «nut factor»

What’s the Difference Between a Bolt and a Capscrew? – 12-6-20

       (and how does this affect the nut factor?) The terms “bolt“ and “capscrew” are commonly used interchangeably.  But the variations between the two are fairly significant from a manufacturing perspective and assembly standpoints.  What’s the difference?  Why does it matter? A bolt is designed for insertion through holes in assembled parts to mate with a …

What Does the Nut Factor, “K”, Really Encompass?

T = k*Fi*d is the “short form” calculation to determine required installation torque, where T is the target installation torque in in-lbs; Fi is the initial preload; and d is the nominal bolt diameter. Seems like a simple, turn-the-crank calculation at first. The bolt size, d, can be “guesstimated” for an initial design calculation. Initial …