McMaster 90170A227 Linch Pin with Chain and Cotter Pin, 5 16" Diameter, Pack of 5 G3501942 907 N Between Grooves (mm) 907 N Between Grooves (mm) 20 Liner Frelon(TM) Gold Self Alignment Yes Slot Angle (Degrees) 60 Color Blue Lubrication Self Lubricating Bearing Type Open Accelerated Speed 14 Feet Second Series FMN Running Clearance Class Precision Minimum Operating Temperature 400 Degrees F Static Load Capacity (N) 806 lbf Maximum Operating Temperature 400 Degrees F System of Measurement Metric Self Lubrication Self Lubricating Between Grooves 6 mm Slot Angle 78 Degrees Maximum PV 20 Standards ANSI ASME Attach pins that have a chain to your work to keep them from getting lost Use them to secure clevis pins and shafts to keep components in place