General Tolerances

Allowance for the length dimension excluding the chamfering portion

Allowance for the length dimension of chamfering portion (dimension of corner’s roundness and chamfering at corner)

Allowance for angular dimension


General tolerance for squareness

General tolerance for radial run-out

General tolerance for straightness and flatness



Customer Service

  • Usage Method
  • Technical Question
  • Customization Products
USA and Canada

NBK America LLC

9:00 to 17:00 on weekdays, Eastern Standard Time

Asia and Europe

Nabeya Bi-tech Kaisha

8:00 to 17:00 on weekdays, Japan Standard Time