S-90505A509 M3 x 18 mm DIN 965 Sealing Stainless Steel Phillips Flat Head Screws
Sealing Stainless Steel Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments.
- Reliable high-pressure sealing up to 6000 psi, thanks to the integrated Viton® fluoroelastomer O-ring.
- Excellent temperature stability with the O-ring performing from -20° to 400° F, ensuring seal integrity in thermal cycling.
- High tensile strength of 70,000 psi provides robust clamping force and resistance to mechanical stress.
- Precise Class 6g thread fit ensures smooth installation and secure fastening in M3 tapped holes.
- Undercut flat head design allows for a flush finish, reducing protrusion and improving aesthetics.
- Full threading offers maximum grip length and uniform load distribution along the entire 18mm shaft.
Professional Applications & Engineering Value
This M3 flat head screw is engineered to solve critical sealing challenges in demanding industrial applications. The combination of 316 stainless steel and a Viton® O-ring provides exceptional resistance to corrosion, chemicals, and extreme temperatures from -20° to 400° F. The undercut flat head profile and Phillips No. 1 drive facilitate easy, flush installation in confined spaces, while the coarse 0.5mm pitch thread and Class 6g fit ensure rapid assembly and reliable performance under vibrations. Ideal for high-pressure systems, fluid handling equipment, and OEM machinery where leak-proof integrity is paramount, this screw delivers long-term durability and compliance with international standards.
Specification Summary & Compliance
This screw features an M3 x 0.5mm coarse thread with a Class 6g thread fit for precise dimensional accuracy. It is manufactured to meet DIN 965 specifications, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing safety and environmental responsibility in industrial use.
