PST series stainless steel Ø1/2in posts are a standard component in any photonics lab. One end is tapped #8-32 and the other 1/4-20. Each post is supplied with an #8-32 set screw.
A 1/4in cross-drilled hole is provided to aid in tightening and loosening the post. These posts are priced to make the buying decision easy.
Discount pricing is offered at quantities as low as 10 pieces.