S-90317A400 M2.5 x 4 mm ASME B18.13.1M Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior vibration resistance with an integrated external-tooth lock washer, ensuring secure fastening in high-motion environments.
- Excellent corrosion resistance from 18-8 stainless steel construction and passivated finish, ideal for harsh or outdoor applications.
- High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness, providing reliable load-bearing capacity.
- Easy installation and removal using a Phillips No. 1 drive, reducing assembly time and tool wear.
- Secure thread engagement with fully threaded coarse M2.5 x 0.45mm design and Class 6g fit, minimizing cross-threading risks.
- Durable washer performance featuring 410 stainless steel with passivated finish, maintaining locking integrity under stress.
- Broad compatibility with standard pan head profile, fitting common industrial designs and tooling.
Professional Applications & Engineering Value
This M2.5 metric screw with an external-tooth lock washer is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and corrosion in demanding environments. The 18-8 stainless steel material and passivated finish provide robust protection against moisture, chemicals, and oxidation, extending service life in applications like machinery, electronics, and automotive components. The coarse metric thread (0.45mm pitch) and fully threaded design ensure quick, secure fastening, while the Phillips drive simplifies installation with standard tools. By integrating a lock washer directly, it eliminates the need for separate components, reducing inventory and assembly errors in B2B procurement scenarios.
Specification Summary & Compliance
This screw adheres to Class 6g thread fit for precise dimensional accuracy and is manufactured in compliance with ASME B18.13.1M standards. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety compliance for global industrial use.
