M4 adapter: M4 x 0.7; length of M4 thread: 8.00mm
M6 adapter: M6 x 1.0; length of M6 thread: 8.00mm
M8 adapter: M8 x 1.25; length of M8 thread: 8.00mm
M10 adapter: M10 x 1.5; length of M10 thread: 15.00mm

#6-32 adapter: UNC thread; length of #6-32 thread: 8.00mm
#8-32 adapter: UNC thread; length of #8-32 thread: 8.00mm
#10-32 adapter: UNF thread; length of #10-32 thread: 16.00mm
1/4"-20: UNC thread, length of 1/4"20 thread: 8.00mm

other sizes and/or pitches available upon request (email us at info@arya-audio.com)