Newlink hardware hold a range of threaded spacers, both round and hexagonal. These come in standard nickel plated brass, stainless steel and steel zinc and clear.
Clearance spacer
Mild steel - Zinc & clear - Brass - Nickel plate - Stainless steel - A2
Hex male/female spacer
Mild steel - Zinc & clear - Brass - Nickel plate - *Stainless steel *(Limited stock - manufactured to order)
Hex female/female spacer
Mild steel - Zinc & clear - Brass - Nickel plate - *Stainless steel *(Limited stock - manufactured to order)
Nylon clearance spacer
Natural nylon - Nylon 6
PCB Spacers
Nylon
Stud connector
Mild steel - Zinc & clear - Stainless steel - A2