0308539 CATERPILLAR 030-8539: 3/8-16 Thread 12 Point Head Bolt | Cat® 3/8-16 Thread 25.4mm Long 12 Point Head Self-Locking Bolt

Material: Steel
Bolt Length (mm): 25.4
Bolt Type: 12 Point
Material Description: SAE J429 / ASTM F2882 (170 ksi Ultimate Tensile Strength)
Coating: Zinc Phosphate + Oil offers corrosion protection up to the point of assembly (recommend painting for external applications). Salt spray resistance of 72 hours to red rust. Coating color - dark grey to black.
Locking Feature: Nylon Patch
Grip Length (mm): 3.18
Thread: Coarse