One Way Sex Bolts are only available as 10-24 Truss Heads in 18-8 Stainless Steel only. They may be ordered as a complete set, consisting of a male and female part, and sized according to the Total Partition Size. Posts fit 1/4" diameter holes.
Or, these screws can be ordered individually as separate male and female parts.
Screw Co., Inc.
30 Laurel Street
Hicksville, NY 11801