Special designs

RIVNUT® - Special designs of blind rivet nuts and studs As your partner in the development and manufacture of fastenings we develop a large number of application-specific purpose-designed fasteners. Our work is carried out under the quality standards ISO 9001 and QS 9000. This chapter is intended only to give you a brief summary of what we can offer: additional functionality from the use of spray-on plastic parts, pre-assembled mechanically joined components, glued or welded parts etc.

RIVNUT® with a large diameter head with under head and shank knurls provides large bearing surface and exceptional spin out in plastics. This fastener is ideal for applications in thermo plastic and other glass reinforced plastic materials.			RIVNUT® square head with a rivet flange bore on the shank end enables this fastener to function as a threaded semi-tubular rivet. The rivet flange bore is expanded captivating the fastener in the parent material. Mating fasteners can then be threaded into the head and the shank end of the fastener.

RIVNUT® with a special “Racetrack” head design fits into a rectangular recess to prevent spin-out resistance. This fastener also includes a closed end to prevent leakage through the internal threads.			RIVNUT® with hex body and 7/16-20 threads for use in seat belt bracket applications. The 7/16-20 threads are the specified thread for seat belt bolt applications. The heavy hex body resists spin out forces applied by the mating shoulder bolt seat belt fastener.

RIVNUT® with a secondary floating nut is ideal for applications with mating part alignment issues. This fastener also features a knurled body for increased spin out resistance and a secondary shear sleeve applied to the counterbore to increase shear strength.			RIVNUT® with a pre-applied PVC foam sealed head is designed to seal against dust, water, air and non-petroleum based liquids. The PVC form seal is bonded to the fastener and seals the circumference of the hole during the installation of the fastener.

RIVNUT® with a forming head and recessed seal installs from the back side of the application and provides exceptional pull-out resistance. This fastener also includes a special recessed head with integrated seal to assure metal to metal contact of the flange to the parent material and sealing of the flange to the parent material.			RIVNUT® PN with a large diameter head and knurls under head provides exceptional spin-out and pull-out in plastics. This fastener is designed for use in blow molded plastics. The large head provides increased bearing surface for the mating part.

RIVNUT® hex nut with rivet flange head can be installed with a press into applications with two-sided access. The hex body provides excellent spinout resistance. Multiple fasteners can be installed with simple fixturing, hand loading and a press.			RIVNUT® with under cut head and seal assures metal to metal contact and sealing against air, water, dust and non-petroleum based liquids. Metal to metal contact assures a “hard joint” in comparison to soft joint surface applied seals.

RIVNUT® closed end and body grooves for use with epoxy potting compound for applications in paper, aluminum and plastic core honeycomb sandwich panels. The hole is drilled, surrounding hex cells are perforated and the exopy is injected. The fastener is installed and the epoxy adheres to the grooves in the fastener.			RIVNUT® with oval head and tapered shank. This fastener is used in a plastic radiator mounting structure. The oval head fits into a matching oval recess to prevent spin out. The smooth body eliminates stress fracturing concerns and is excellent for use in SMC plastic.

RIVNUT® special with shank end rivet flange can be installed into a sandwich panel of honeycomb or styrofoam. Threading the mating fastener into the rivet flange end enables the load to be applied to the entire panel improving pull-out resistance.			RIVNUT® Unilock® fasteners feature an end of shank crimped prevailing torque locking element that meets MIL-N-25027 thread locking requirements. The “keyed” underhead projection fits into a mating key hole slot in the parent material preventing spin out under prevailing torque thread locking.

RIVNUT® Thin Head knurled fastener features a thin head design to install flush in a hole with a minimal chamfer. Body knurls provide additional spin-out resistance.