S/S Starter 12pt Bolt Kit 3/8-16 x 4.660 UHL

The S/S Starter 12pt Bolt Kit 3/8-16 x 4.660 UHL by ARP represents a critical fastening solution for high-performance engine and powertrain assembly work in tactical vehicles, law enforcement fleets, and military applications. Designed for professionals who demand reliability under extreme conditions, this stainless steel bolt kit serves as the foundation for secure, vibration-resistant connections in demanding mechanical systems. Whether you're building a duty weapon's upper receiver, assembling critical vehicle components, or maintaining tactical equipment in the field, precise fastening directly impacts operational safety and mission success.

ARP's S/S Starter 12pt Bolt Kit features premium stainless steel construction, offering superior corrosion resistance in harsh environments—essential for coastal operations, wet climates, and salt-spray exposure. The 3/8-16 thread specification provides balanced load distribution across critical joints, while the 4.660-inch under-head length (UHL) ensures proper engagement in deep-pocket applications where standard fasteners fall short. The 12-point head design distributes clamping force more evenly than traditional 6-point fasteners, reducing stress concentration and minimizing the risk of fastener failure during high-vibration or shock-load scenarios common in tactical and military equipment.

This kit suits gunsmiths, armorer teams, vehicle maintenance personnel, and field technicians assembling or rebuilding components that demand uncompromising fastener integrity. The compact 0.44-pound package fits easily into maintenance kits and field repair bags, making it accessible during operational deployments. Proper installation requires torque specifications matched to your specific application—consult engineering data for your equipment to ensure optimal clamping force and longevity.