Hide Screw Heads, Rivets and Nails Three Colors and Two Styles to Choose From CRL Snap Caps are designed for protecting, decorating and concealing screws and other fasteners. There are two types available: countersunk for countersunk screws, and flat for pan head screws, rivets and nails. Snap Caps are used in the RV, boat, appliance, furniture and construction industries. They can also be used to finish off just about any fastening job. Other colors are available on special order by contacting us at . 100 rings and caps per box. Fastener Size & Type: 6 - 8 Screws, 1/8 in (3 mm) - 5/32 in (4 mm) Rivets Cover: Countersunk Type Color: White