DNZ Game Reaper
08-27-2012, 06:54 PM
#2
Boone & Crockett
Join Date: Apr 2007
Location: River Ridge, LA (Suburb of New Orleans)
Posts: 10,917
Both of the DNZ mounts I have came with 8-40 NS (National Standard) screws. For that you need a #28 bit and 8-40 tap.
The 40 tpi thread is needed for the shallow holes usually used on guns. If your application has a lot of meat and can take a deeper hole and longer screw, you can replace the 8-40 screws with 8-32 screws from the hardware store. 8-32 taps are readily at any hardware store, 8-40s are not, and ususally have to be special ordered or bought on-line. Use a #29 bit for 8-32 screws.
Here's a handy drill bit/tap chart. http://www.bigblockdart.com/techpage...illChart.shtml
The 40 tpi thread is needed for the shallow holes usually used on guns. If your application has a lot of meat and can take a deeper hole and longer screw, you can replace the 8-40 screws with 8-32 screws from the hardware store. 8-32 taps are readily at any hardware store, 8-40s are not, and ususally have to be special ordered or bought on-line. Use a #29 bit for 8-32 screws.
Here's a handy drill bit/tap chart. http://www.bigblockdart.com/techpage...illChart.shtml
