Screw caps for nuts and bolts with a soft TPE-Seal.
The bolt´s threads self-cut into the thread-ridges.
The cirular cross section
for round and hexagon nuts reduces capillary action
for various excess bolt lengths, and one or two nuts.
Screw Caps BM for nuts and bolts with additional soft TPE-Seal (pat. pend.)
The advantage of this type is the screw-in "self-cutting" fit. Thanks to its threades ridges, it works indepently of the screw thread.
The entire screw connection is protected.