Abstract: A fastener adapted to pass through aligned holes through workpieces is disclosed. The fastener includes a pin member having a transition portion wherein the diameter of the transition portion decreases radially as it extends from the smooth cylindrical shank portion to the threaded portion. The fastener may also comprise a sleeve member and a clamping means. The clamping means includes a collar, a nut, or any other possible clamping means. In exemplary embodiments, the workpieces can be formed with a plurality of materials, the materials including composite, metallic, or composite/metallic structures, any combination thereof. In particular embodiments, the fastener has interference capability of 0.0005 to 0.0100 inches in composite structures without risk of composite delamination or damage. As a result of the fastener interference, gaps between the fastener and the structure are eliminated thereby providing good electrical conductivity between components.

Abstract: A blind fastener for securing a plurality of workpieces is disclosed. The blind fastener comprises several components, a core bolt, a body sleeve member and a buckle sleeve member. The core bolt includes a tool engaging portion to engage the head of a driver on a installation tool. The buckle sleeve member has a buckle portion designed to create a bulb fastening the workpieces together. In some embodiments, a the buckle portion is locally annealed to promote formation of a blind side bulb. A nose assembly with a matching anti-rotation engagement to the head of the body sleeve member is also disclosed.

Abstract: A two piece fastener for securing at least one sole member to a metal cleat to provide better traction in footwear is disclosed. The fastener comprises a pin member and a sleeve member having an internal locking mechanism. In exemplary embodiments, the internal locking mechanism is defined by axial movement of the pin to engages a sleeve stop shoulder in a through bore located in the sleeve moving it radially inward into the internal locking section of the pin. After the internal locking section has been substantially filled, the pin and sleeve are locked together stopping movement of the pin. The fastener provides both water resistance and easy removability with the use of a tool.

Abstract: A threaded fastener having a two-piece nut member and a bolt with the nut member having a threaded nut member and a base member is disclosed. The threaded nut member has a body portion and a neck portion, the neck portion engaging with a transition beginning engagement on the base member. The base member includes a transition portion, the diameter of the transition portion increasing radially as it extends axially from the cylindrical through bore portion to an increased diameter at the outer planar surface of the base member. Movement of the neck potion into the based member results in the threaded form having a compressive engagement with engaged threads of the bolt to provide the prevailing torque structure. The threaded nut member and base member may be made of dissimilar materials and is more flexible in use with varying bearing surfaces.