Arm Bolt for Birdcage

The ALLSTAR PERFORMANCE Arm Bolt for Birdcage (ALL 55055) is a purpose-built fastener engineered for sprint car chassis assembly and high-vibration racing applications. This 1/2-20 threaded bolt measures 3.5 inches in length and features a hex head design, making it compatible with standard socket and wrench tools for rapid installation and field maintenance. Constructed from steel with cadmium plating, it delivers corrosion resistance and reliable fastening strength under the sustained vibration and thermal cycling typical of competitive motorsports environments.

The 1/2-20 thread specification ensures adequate clamping force on birdcage arm assemblies without over-torquing critical suspension geometry. Cadmium plating provides superior corrosion protection compared to bare steel, particularly important in open-cockpit racing where exposure to track moisture, salt, and atmospheric contaminants accelerates oxidation. The 3.5-inch length is optimized for sprint car arm bracket configurations, and the hex head design permits positive engagement with both standard wrenches and impact-rated sockets—critical for pit-stop repairs and pre-race adjustments. At 0.26 lbs, the bolt's weight is negligible to overall vehicle dynamics while maintaining structural integrity under lateral and longitudinal chassis loads.

This fastener is intended for sprint car teams, fabricators, and chassis builders who require OEM-equivalent hardware for birdcage assembly, repair, and component replacement. Teams rebuilding suspension geometry, upgrading arm configurations, or restocking pit-box consumables will find this bolt essential for maintaining consistent fastening specs across multiple vehicles. The cadmium finish makes it especially valuable for teams operating in humid or salt-air environments where fastener degradation leads to difficult removal during urgent mid-season repairs. Purchase this bolt individually or in bulk quantities to standardize your fleet's fastening hardware.