I need to drill a hole and thread it to accept the male end of a 5/16 brass fitting. I know that U.S. standard NPT (pipe thread) taps are slightly tapered. I can find 1/4 & 3/8 in NPT, but what do I use for 5/16?
2007-01-27 11:54:41 · 4 answers · asked by Peedlepup 7 in Home & Garden ➔ Maintenance & Repairs
5/16" is not a standard pipe thread, it will be either 3/8" or 1/4". the taper for ntp thread is 3/4" per foot
2007-01-27 13:35:59 · answer #1 · answered by RUSSELLL 6 · 1⤊ 0⤋
Is your 5/16 fitting a pipe thread? If so, you'll have to get the NPT tap. If it is a straight thread, then use a regular standard tap for that size and thread pitch.
2007-01-27 12:03:55 · answer #2 · answered by shaman 4 · 0⤊ 0⤋
youshould drill the hole at 1/4 inch then use the 1/4 inch tap then it should thread tight
2007-01-27 12:03:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I need to find out instruction for installation of helicoil insert for screw 1/2-13 I need to know: 1) First step, What drill size 2) Helicoil tap #_________ 3) Gage threaded hole, using #________ 4) Helicoil #___________ 5) Installation tool #___________ 6) Break-off Tool #____________ Thank you very much Rose
2016-05-24 07:00:35 · answer #4 · answered by ? 4 · 0⤊ 0⤋