This is a “universal SEMS screw family" offering a wide choice of drives (Slotted, Phillips, Hex Socket, Torx), head styles (Pan, Round, Truss, Cap), and washer combinations (double flat washers, square washer, flat washer, spring washer). Materials include carbon steel (Grade 4.8 to 12.9) and stainless steel (A2/A4) with finishes such as zinc plating, nickel plating or black oxide. The washers are pre‑assembled and captive. This product line is designed for automated assembly, repair kits and equipment manufacturers who need flexibility. Users can select the exact drive, head and washer configuration to match their application.

• Electronics repair kits: multiple drive types for different devices.
• Automated production change‑over parts: different drives for different stations.
• Instrument internal fixing: pan head + spring washer for vibration resistance.
• Rail vehicle interior panels: Torx drive with large flat washer.
• Custom cabinets and distribution boards: choose flat or spring washer to avoid paint damage.

• All drive types available – use the bit you already have.
• Flexible washer configurations – double flat for soft materials, square for anti‑rotation, spring for vibration.
• Multiple head styles – pan for general, truss for wide bearing, cap for countersinking.
• One‑stop sourcing – reduce supplier management.
• Custom anti‑loosening solutions – e.g., spring + square washer combination.