How Place Bolts Work

The "Asymmetric Place Bolt" is a one piece, free-spinning, cold formed fastener. It features, in its head design, two important factors: Asymmetric form and elastic diaphragm action.

1.	The Asymmetric design moves the center of mass away from the center line of the bolt. This provides a powerful force that resists rotational loosening. Type "BH" bolts are one hex size larger than type "B" bolts thus moving the center of mass even further from the axis of the bolt and increasing the locking force.
2.	When tightening the diaphragm action furnishes additional elastic elongation. This feature alone increases vibration life up to 3 times that of conventional hex cap screws.
3.	The combination of these two features produces up to 7 times the vibration life of conventional hex cap screw. The "Asymmetric Place Bolt" does not derive its locking action from prevailing torque or lock washer device.

Comparison of 3/8 - 16 Hex Bolt Vibration Life Data
Initial Pre-Load: 7000 lbs. seated on a soft bearing plate