Technical Data

Bolts Classic Fasteners Logo

Technical Data

The information below is largely in PDF file format to view or print these files you need to have Adobe Acrobat Reader 5 or above installed on your computer.
This free software is available by selecting on the adjacent link.

	Across flat dimensions of hex headed bolts
	British standard cycle thread data
	Convert screw diameter to gauge number
	Tapping drill sizing
	How to identify threads A few words to help you identify screw thread types.
	James Glen Pty Ltd training manual I highly recommend having a look at this manual, it covers many aspects about fasteners, including strength, identification, plating types, manufacturing processes to name a few.
	Number and letter drill equivalent metric drill Sizes
	Schrader tyre valve data
	Thread identification charts Use these two charts to identify thread type knowing diameter and thread pitch
	TPI vs Pitch (mm) Two charts to convert tpi to pitch (mm) and pitch (mm) to tpi.
	Wood and self tapping screw drill chart Suggests size of hole to be pre-drilled prior to using the these screws.

If anyone finds an error in any of the above data please let me know so that corrections can be made.

If there is some thread related data that you would like to know that is not listed please feel free to contact me and I will endeavour to help.

CLASSIC FASTENERS
PO Box 187
Welland SA 5007
Australia
Tel: +61 8 8346 9838
Fax: +61 8 8340 9898
E-mail: web@classicfasteners.com.au