Self-Tapping Screw
Source self-tapping screw from India's verified manufacturers and exporters on Himalay. Browse the full range for industrial and export applications.
About Self-Tapping Screw
Self-tapping screws cut or form their own mating thread as they drive into a pre-drilled or pre-punched pilot hole, eliminating a separate tapping operation in sheet metal, plastics, castings and thin sections. They are a versatile assembly fastener where a clean, repeatable thread is formed in the host material during installation. The category divides into thread-cutting types (with a cutting edge or flute that removes material, type 23/25/BF for harder or brittle materials) and thread-forming types (type AB/B/C that displace material without chips, ideal for ductile sheet and plastics). Dimensional standards include DIN 7981 (pan head), DIN 7982 (countersunk) and DIN 7983 (raised countersunk) tapping screws, with sizes such as ST2.2 to ST6.3 and lengths to suit the joint, plus ISO 1478 tapping-screw thread definitions. Head forms include pan, countersunk, hex washer and truss, with Phillips, Pozidriv, Torx and hex drives. Strength comes from hardened, case-hardened carbon steel for thread-cutting performance, with stainless A2/A4 for corrosion-resistant duty and the point/thread design matched to the host material and its hole size. Coatings include bright and yellow zinc, black phosphate, and zinc-flake or specialised finishes for outdoor service. The pilot-hole diameter and thread type are the critical specifications for a sound joint. Himalay coordinates material traceability with EN 10204 3.1 certificates where requested, dimensional and recess inspection, core-hardness and torque (drive/strip) data and salt-spray results for coated lots; consistent point quality, RoHS declarations and SABER routing for GCC entry are coordinated as part of the standard order flow.
