SAE J81-2012 SAE J 81-2012 标准

适用范围: "This SAE Standard covers requirements for thread rolling screws suitable for use in general engineering applications. (It is intended that ""thread rolling"" screws have performance capabilities beyond those normally expected of other standard types of tapping screws.) NOTE??The performance requirements covered in this document apply only to the combination of laboratory conditions described in the testing procedures. If other conditions are encountered in an actual service application (Such as different materials@ thicknesses@ hole sizes@ etc.)@ Values shown herein for drive torque@ torque-t-clamp load@ and proof torque may require adjustment."

SAE J81-2012SAE J 81-2012