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Perfect Lock Bolt America, Inc. introduced the Perfect Lock Bolt (PLB), a dual-threaded bolt and nut system engineered to reduce or eliminate self-loosening problems in the fastener industry.

The PLB consists of a dual-threaded bolt shaft and two nuts of different thread pitches. The first, or primary nut on the shaft, is a coarse thread nut. The outer, or secondary nut on the shaft, is a fine thread nut, or “lock nut.” When the PLB is subjected to a self-loosening force in any form, the primary nut moves away from the preloaded pressure along the bolt shaft faster than the secondary lock nut. Under any loosening force, the primary nut and the secondary lock nut move away from the pre-loaded pressure at different rates, creating mechanical lock between the two nuts.

“The Perfect Lock Bolt is a simple, yet ingenious design,” said Mark Doll, Perfect Lock Bolt America, Inc.’s CEO. “The Perfect Lock Bolt decreases maintenance and liability, while increasing safety, which ultimately provides a significant cost savings.”

The PLB is designed to reduce, and even eliminate many common problems associated with external loosening forces such as wind, heat-related expansion and contraction, and vibration.

The PLB is ideal for applications such as: bridges, industrial machinery, construction and farm machinery, trucking, aerospace, high-speed rail, amusement parks, wind generation, landfill refuse separation or in any situation where vibration is an issue of concern.

The PLB’s revolutionary new design is fully reusable, causing no damage to the bolt, the nuts, or to the equipment being secured by this patented fastening system. The PLB is coated with environmentally friendly coatings.

The Perfect Lock Bolt has passed and exceeded the Vibration Masters Junker Vibration 25201-B test, and it is available in different grades, sizes, lengths and finishes.

Perfect Lock Bolt America, Inc., was founded in 2010 and is a California Corporation, with headquarters in Rocklin, CA.