Easton 4mm Pins #3 12 Pk.

The Easton 4mm Pins #3 12 Pk. represents a foundational fastening solution for precision mechanical assembly and automotive modifications where alignment and structural integrity are non-negotiable. These pins function as locating and retention devices across engine builds, suspension work, and drivetrain modifications where tolerance stacking demands repeatable positioning. Whether you're indexing carburetor bodies, securing brake caliper brackets, or aligning transmission bellhousings, quality pins eliminate guesswork and prevent catastrophic misalignment that can compromise safety and performance.

The 4mm diameter specification provides a balance between structural load capacity and clearance compatibility across most OEM and aftermarket automotive applications. Easton's #3 designation indicates hardened steel construction with precision tolerances that ensure tight, consistent fit within drilled holes—critical when assembling high-rpm engine components or vibration-prone suspension geometry. The 12-pack quantity ensures you maintain spares during multi-system builds or repairs without repeated reordering, and the compact 0.05 lb weight profile makes them practical for shop organization and portable toolkits. Proper pin seating prevents lateral movement that would otherwise induce stress fractures in aluminum castings or precision-bored housings.

Automotive enthusiasts performing engine swaps, transmission rebuilds, or custom frame fabrication rely on these pins for accurate component indexing before final fastening. Mechanics working on carburetor tuning, intake manifold gasket sealing, and brake system assembly benefit from the precision fit these pins deliver. They're equally valuable in race engine builds, engine bay restorations, and high-performance drivetrain modifications where repeatability across multiple builds safeguards consistency and reliability. For best results, verify hole diameter matches 4mm specification and clean pin seats to eliminate debris that could prevent full seating.