Fastening screw SRP0173.TX

leak-proofingcylindrical headTorx

Cylindrical-head sealing screws with Torx drive and integrated O-ring that ensure complete sealing between the head and the mating surface. Designed to provide bidirectional protection against contaminants (gases, fluids) and to prevent ingress of water, dust or other particles in industrial and electrical applications.

Main features

• Cylindrical head with Torx drive and integrated O-ring that is compressed on tightening between head/recess and the mating surface.
• Provide bidirectional protection against gases and fluids to reduce risk of damage to sensitive equipment.
• Prevent ingress of water, dust and other contaminants, ensuring a secure and reliable fastening.
• Suitable for use in threaded and non-threaded holes; typical uses: enclosures, automotive and electrical applications.
• Material: stainless steel 303 (slightly magnetic) with good corrosion resistance.
• Note: do not confuse with standard fasteners without sealing properties; using an O-ring on a part not designed for sealing may damage the ring and not deliver equivalent performance.

Characteristics / technical specifications

• Material: Stainless steel 303
• Series code: SRP0173.TX
• Drive type: Torx (examples: TX6, TX8, TX20, TX25, TX30, TX45, TX50, TX55)
• O-ring: integrated, compressed on tightening
• Thread sizes (d1): from M2 up to M12 (e.g. M2, M2.5, M3, M4, M5, M6, M8, M10, M12)
• Body lengths (l1) available: from 4.0 mm up to 50.0 mm (e.g. 4.0, 6.0, 8.0, 10.0, 12.0, 16.0, 20.0, 25.0, 30.0, 40.0, 50.0)
• Head height (h1 max): typically 2.0 mm – 12.0 mm (varies by code)
• Head diameter (d2 max): indicative range 3.8 mm – 18.0 mm (varies by code)
• Parameter d3 (counterbore ±0.05): available values (e.g. 2.35, 2.75, 3.6, 4.5, 5.6, 6.8, 8.5, 10.6, 12.85)
• Typical applications: enclosures, electronics, automotive and other uses requiring sealing properties