82 Craig Road Anderbolt
Boksburg North, 1460
P.O 6736, Dunswart, 1508
Gauteng, South Africa
Tel: 011 894 7748
Fax: 011 918 1134

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Drive and Washer Types

Fastener and Head Styles

Nut Types

For fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the fastener.

For fasteners that are designed to be countersunk, the measurement is made from the point on the head where the surface of the material is, to the end of the fastener.


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US and Metric Thread Sizes

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HOW TO MEASURE FASTENERS

US and Metric
Thread Sizes More About BoltTech

Bolt-tech has recently acquired bigger premises to accommodate a larger manufacturing plant as well as larger stock volumes, and will soon make remarkable progress by importing our own fasteners.


This will improve our standing in the fastener market and have great confidence in the accomplishment of this goal.

Our mission is to realise the importance of business with our customers and maintain these relationships in a spirit of fairness, honesty and integrity.


We constantly strive to

strengthen these

relationships.

Should you wish 
for a representative 
of our company 
to come and see you, 
please feel free 
to contact us.