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What would the thread length be for a 4" long 5/16-18UNC-2A fastener?

A. .3125"
B. 4"
C. .875"
D. 18mm


Sagot :

To determine the thread length, let's first understand the details given for the fastener.

The fastener is specified as a 4" long 5/16-18UNC-2A fastener. This contains several pieces of information:
- The length of the fastener is 4 inches.
- The diameter of the fastener is 5/16 inches.
- The thread count is given by 18 threads per inch.

The thread length refers to the part of the fastener that contains the threads.

Fastener Length: 4 inches

Given that the fastener's overall length is 4 inches and it is completely threaded (which is typically the case for screws and small-diameter bolts), the full length of the fastener is threaded.

Thus, the thread length in this case would also be 4 inches.

Therefore, the thread length for a 4" long 5/16-18UNC-2A fastener is 4 inches.
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