The base was then placed in the mill vise where it was drilled for an 8-32, 82-degree socket-head screw
The cutter tips, which are available in stainless steel, tool steel, and tungsten carbide, can be slid onto blade holders and secured with one retaining socket-head screw
, allowing rapid replacement.
Use a 3/8-in socket-head screw
key to remove both pipe screws on the barrel of the MRS.
The hole is beveled for an 82-degree, flat-head, socket-head screw
A 1/4-20 socket-head screw
holds these parts firmly in position.
Following this, I beveled the larger hole with an 82-degree countersink for an 8-32 socket-head screw
On the left and fight side of the base are socket-head screws
, which enter the hole in the base and engage the stud.
My secondary cage has 3/8-inch-thick rings, so I used 3/4-inch-long 1/4-20 socket-head screws
with pressed-on plastic knobs.
The only materials required are two 8-32 x l/2-inch socket-head screws, two 1/2-inch number 8 round-head sheet metal screws, and a length of flat metal stock 9/16 x 3/16 x 4 3/8 inches in length.
110-inch thick where it is tapped, providing sufficient screw thread depth for hardened socket-head screws.
I considered various methods of attaching the C-channels to the tube segments and wound up using 1/4-20 socket-head screws
mounted in the tubes and keyhole slots in the struts.
The base of the trigger is attached to the flame of the crossbow with three #6-32 countersunk socket-head screws