Ads
related to: 1/16 npt tap drillreviews.chicagotribune.com has been visited by 100K+ users in the past month
walmart.com has been visited by 1M+ users in the past month
Overall Customer Satisfaction 9.3 out of 10 - Bizrate.com
Search results
Results from the WOW.Com Content Network
Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.
The taper rate for all NPT threads is 1 inch of diameter in 16 inches of length (3 ⁄ 4 inch per foot or 62.5 millimeters per meter) measured by the change of diameter (of the pipe thread) over distance of thread. The half-angle (between the taper surface and the axis of the pipe) is arctan(1 ⁄ 32) ≈ 1.7899° ≈ 1° 47′.
where is the tap drill size, is the major diameter of the tap (e.g., 3 ⁄ 8 in for a 3 ⁄ 8-16 tap), and / is the thread pitch (1 ⁄ 16 inch in the case of a 3 ⁄ 8-16 tap). For a 3 ⁄ 8-16 tap, the above formula would produce 5 ⁄ 16, which is the correct tap drill diameter. The above formula ultimately results in an approximate 75% thread.
75% tap drill size (in) (mm) (in −1) (mm) (in) (mm) (in) (mm) 1 ⁄ 16: 1.588 60: 0.423 0.0412 1.046 #56: 1.2 3 ...
Both British standard and National pipe thread standards specify a thread taper of 1:16; the change in diameter is one sixteenth the distance travelled along the thread. The nominal diameter is achieved some small distance (the "gauge length") from the end of the pipe.
JIC hydraulic fitting from 1967 Ford backhoe. It was badly stuck, but shows what a JIC fitting looks like. The left is the male part, the right is female.
Ads
related to: 1/16 npt tap drillreviews.chicagotribune.com has been visited by 100K+ users in the past month
walmart.com has been visited by 1M+ users in the past month
Overall Customer Satisfaction 9.3 out of 10 - Bizrate.com