Product Description Stainless steel self-clinching standoffs and concealed-head standoff Shanghai Jingyang Fasteners: clinch standoff, clinching standoff, self clinch standoff, 1. Concealed-Head Standoffs: 2. Installed into a blind milled hole where surface opposite stud must remain unmarred. 3. Available in Steel, Stainless Steel and Aluminum in thread sizes M3 - M5 in a range of lengths. 4. Thread Code:M3 M4 M5 M6 Our Services Company Information Warehouse Factories