What is KM lock nut?
KM Locking Nuts are often referred to as bearing nuts, shaft nuts of withdrawal nuts. They are commonly used in conjunction with suitable tab washers to securely locate bearings and other components onto a shaft. They can also be utilised when mounting taper bore bearings onto shafts.
What are km screws?
The KM-USA line has a 20% higher head than a standard cap screw, providing increased torque and making it easier to install without hurting your knuckles. As you might gather from the name, the KM-USA line is 100% American-made from steel melted and rolled in the USA. That assures the highest quality.
How do you torque a self-locking nut?
When torquing a self-locking nut, the nut should be run down on the threads of the bolt until the nut almost contacts the mating surface. The amount of torque required to run the nut down (friction drag torque) should be measured and added to the amount of torque specified for the fastener.
Are lock nuts and stop nuts the same?
Nylon insert lock nuts—also known as nylon nuts and stop nuts—are a prevailing torque, locking nut that resists loosening caused by vibration and normal use. Unlike free spinning hex nuts, lock nuts make use of a deforming elastic or metal material to stay in position against torque and shock.
How do you size a nut?
If the nut is metric, count the number of lines on the tape measure to find the measurement. If you count 9 lines, the size is a 9-mm (millimeter) nut. If the nut is US standard, count the smallest lines on the tape measure in sixteenths. Add the sixteenths together to find the size.
Is standard for lock nut?
Lock nuts are most commonly available in ASTM A563 Grades A and DH and ASTM A194 Grade 2H. They are manufactured with a standard hex or a heavy hex pattern. Two of the most common lock nut styles are Anco and Tri-Lok. The Anco style is a self-locking nut with a ratchet pin that is made from stainless steel.
Do you need to torque lock nuts?
You do need a locknut if any of the factors below prevent the bolted joint from maintaining the full pre-load tension and vibration, impact, or load forces cause the nut to move.
How is lock torque measured?
Torque Measurement Procedure
- Thread the cadmium plated bolt, by hand, into the insert until it contacts the locking coil.
- Measure the maximum torque needed for the bolt to pass into and past the locking coil(s) for three complete turns.
- Avoid adding any axial load to the insert during measurement.