Technical Resource Center | Types of Joints

Free Running-Slam (Hard Drive)
-Resistance low at start and during rundown but peaks suddenly as bolt head seats.
Compressing Gaskets (Soft Draw)
-Turning resistance gradually increases as squeeze progresses to final turn.
Self-Tapping Screws
-Initial resistance high through tapping travel, easing off until sudden (B) or gradual (A)
Sheet Metal Screws
-Starting torque builds until penetration made, then resistance slacks off until head seats.
Wood Screws
-Low resistance at start builds gradually through entire rundown until head seats.

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