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Related to cap screw: bolt
cap screw[′kap ‚skrü]
A screw which passes through a clear hole in the part to be joined, screws into a threaded hole in the other part, and has a head which holds the parts together.
1.A screw which is threaded along its entire length and has a chamfered point; it is driven into a hole and secured without a nut.
2. Same as tap bolt.