CS-1224UNCx12-CSK-TR10-SS304

Countersink-Head set screw, 12-24UNC x 1/2" (12.7mm), TR10 size Tamper-Resistant (security Torx-drive), stainless-steel

Distinguishing Marks: "A2" or "304" may be stamped into face of the item.

Note - 304 stainless steel is often referred to as A2 or 18/8 Stainless and is non-magnetic. It exhibits strong abrasion resistance, good resistance to corrosion and reliably low levels of distortion but does tarnish under some conditions.

For more demanding environmental or cosmetic conditions grade 316 (also known as grade A4) may be more suitable.