Switchcraft shoulder washers provide insulation from voltage potentials and protects the mounting surface and bolts. These washers are designed to aid in the installation of 1/4-inch headphone and microphone jacks.

• Facilities mounting of headset and microphone jacks
• Fits drilled 3/8 inch mounting holes for 1/4-inch jacks
• Swedged Shoulder Rigid Plastic
• 5/8" Outer diameter, 3/8" Inner diameter
• Black