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The 7/8 inch BSW hand tap is designed with a thread pitch of 9 threads per inch TPI according to the British Standard Whitworth BSW specification. Its nominal diameter is 0.875 inches, approximately 22.23 millimeters. The thread angle is 55 degrees, which ensures uniform stress distribution during the tapping process. For high precision manual threading, this tool is typically made from high-speed steel HSS. The overall length of the tap usually ranges between 80 to 100 millimeters, and its square shank is designed to fit into a tap wrench.
This industrial tool is suitable for cutting internal threads in medium-hard metal or alloy parts. The 7/8 BSW hand tap often comes in a three-piece set, including taper, intermediate, and bottom taps. The recommended drill size for the pilot hole is 20 millimeters to achieve optimal engagement between the tap and workpiece. The suggested manual operating speed is approximately 10 to 15 revolutions per minute. This tap is widely used in machining, plumbing, and industrial maintenance applications.
WEBSITE: HAND TAPS 7/8 BSW Iran
