Hardness
Wiki User
∙ 10y agoAn SAE Grade 8 bolt will have 6 radial lines on it as shown below. \ | / / | \
A nut and bolt combination forms a fastener .
It's a measure of the strength of the bolt. The strength is measured using what's called a grade. In this case, you have a grade 8 bolt. The higher the number, the stronger the bolt.
Snap.
The homograph you are referring to is "bolt." A bolt can refer to a metal fastener used to secure objects, as well as a sudden movement or dash, typically made with fingers.
Six sided bolt.
Typically, a stud bolt refers to an un-headed fastener, like a piece of all thread rod. A hex bolt is common a six-sided fastener, available in many grades.
The homograph for a metal fastener is "bolt" (a type of screw), and for the sound made with fingers, it is "bolt" (to run away suddenly). Both words are spelled the same but have different meanings and pronunciations.
The homophone for a metal fastener is "bolt" and for a sound made with fingers is "snap."
A bolt is a type of fastener that typically has a threaded shaft and a head on one end. In terms of measurement, a bolt is often sized by its diameter, length, and thread pitch. The diameter is the width of the bolt shaft, measured in inches or millimeters.
The Rockwell C Hardness for a grade 10.9 fastener is 32 - 39HRC or 320 - 380Hv10
A grade denotes the mechanical properties of a screw - the materials used, size, direction of the thread and so on.