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Cap Nuts

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Cap Nuts

Cap Nuts are used to cover exposed threaded stud, rod and bolt ends with a dome-like cap. This provides safety and a finished look to the exposed threaded end. We offer cap nuts in both open end and closed end, along with washer based cap nuts.

Value Fastener offers 4 types of Cap Nuts; Closed end cap nuts, Closed end Cap Nuts-washer based, Open end cap nuts, and open end cap nuts washer based. Our cap nut sizes range from 4-40 all the way to 1-8. Cap nuts come in 18-8 stainless steel and steel with various finishes.
 
Closed End Cap Nuts
Closed End Cap Nuts
Closed End Cap Nuts, Washer Based
Closed End Cap Nuts, Washer Based
Cap, Closed End, 18-8
Cap, Closed End, 18-8
Metric Domed Cap Acorn Nut
Metric Domed Cap Acorn Nut
Open End Cap Nuts
Open End Cap Nuts
DIN 917 Low Type Hex Cap
DIN 917 Low Type Hex Cap
Open End Cap Nuts, Washer Based
Open End Cap Nuts, Washer Based
DIN 986 Domed Cap Nylon
DIN 986 Domed Cap Nylon

A Cap Nut is also known as an acorn nut. It’s a type of nut that's characterized by a dome head. Other nuts are open on the top and bottom, but Cap Nuts are closed on the top. The top of an Cap Nut (acorn nut) resembles a dome, thereby restricts their usage to the end of a bolt.
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