Category Archives: Technical Information
Bolt Thread Length
How to Calculate a Bolt Thread Length At Arun Fasteners we are often asked about...
Which Allen Key should I use for the Socket Screw I am using?
We are often asked what size hex Allen key wrench will fit a certain socket...
High Tensile Grades
Most metric High Tensile (HT) nuts and bolts are produced in three grades, with the...
Imperial Washer Dimensions
Below are common imperial washer dimensions Imperial T3 Light Washers Imperial T3 Heavy Washers I/D...
Metric Washer Dimensions
Please see below measurements relating to our most common metric washers Metric Form A Washer...
Which Coating?
Fasteners are often produced in a range of coating options. Coating affects the durability and...
WHAT THREAD? UNC, UNF, BSF, BSW
How to measure the thread The pitch is the distance from the crest of one thread to...