7/16-20 Special Order UN-2 unthreaded (allow 2-3 weeks) 12mm x 1.75 12mm x 1.50 12mm x 1.25 10mm 1.50 10mm x 1.25 8mm 1.25 7mm 1.00 NONE Needed (Use 16mm x 1.50 Master Thread) 7/16-14 1/2-20 1/2-13 1/4-28 5/16-24 5/16-18 3/8-24 3/8-16