•Tapping ANSI vs ISO vs JIS vs DIN

About This Product

*S/ Item is Special/Custom Item. Please contact NT USA for questions at 615.771.1899. To place an order please contact your regional distributor.

Tap size standards

The primary differences between JIS, DIN, ANSI, and ISO tap standards lie in their shank diameter, square drive size, and overall length (OAL). Choosing the correct standard is critical to matching the tap to the proper tapping adaptor or collet to ensure precision and prevent tool breakage.