This Rackstud is designed to fit square hole server rails with a thickness of 2.7mm to 3.2mm. The stud is installed from the front of the rail which simplifies the installation in tight spaces. Once the stud and lock washer is installed, equipment can be easily be hung while you secure it in place with the nut. Features: Redesigned nut with screwdriver slot Longer threads makes hanging gear easier Improved leverage strength up >30% Fits even thicker rails Now even easier to insert Physical Characteristics Color Purple Stud, Yellow Lock Washer, Black Nut Stud Material Grivory Washer Material PP Nut Material Glass Filled Nylon Vertical Rail Hole 9.2 to 9.89mm (0.362" to 0.389") Vertical Rail Thickness 2.7mm to 3.2mm (0.106" to 0.126") Maximum Equipment Weight 20kg (44lbs) Push-In Force 46kgs/101lbs Pull-Out Force 92kgs/202lbs Shear Strength 156kg/343lbs Approvals SGS Labs Compliant RoHS Compliant Reach Compliant Packaging Information Package Quantity 20, 100 Product Weight 20 pack – 0.16 lbs [0.07 kg]100 pack – 0.78 lbs [0.36 kg]