S-90317A553 M3 x 5 mm JIS B 1188-C 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 that maintains clamp load in high-stress environments.
- Excellent corrosion resistance due to 18-8 stainless steel construction and a passivated finish, ideal for harsh or humid conditions.
- High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for durable, reliable fastening in demanding applications.
- Secure and precise fit ensured by Class 6g thread fit and coarse M3 x 0.5mm threading, reducing cross-threading risks.
- Efficient installation with a No. 2 Phillips drive and pan head design, allowing for quick assembly with standard tools.
- Full thread engagement along the 5mm length for maximum grip and load distribution in thin materials or tight spaces.
- Compliance with international standards including JIS B 1188-C, RoHS 3, and REACH, ensuring product safety and regulatory acceptance.
Professional Applications & Engineering Value
This M3 pan head screw with an external-tooth lock washer is engineered to address common industrial challenges such as loosening under vibration and corrosion in demanding environments. Made from 18-8 stainless steel with a passivated finish, it offers reliable performance in electronics, machinery, and automotive assemblies where moisture and chemicals are present. The coarse metric thread (M3 x 0.5mm) and Class 6g fit provide easy alignment and robust holding power, reducing assembly errors. Fully threaded and paired with a lock washer, it ensures consistent clamping force, making it ideal for applications requiring vibration-resistant and long-lasting fastening solutions in compact designs.
Specification Summary & Compliance
This screw features precise Class 6g thread fit and coarse metric threading (M3 x 0.5mm) with a length of 5mm, ensuring dimensional accuracy per JIS B 1188-C standards. The manufacturing adheres to strict specifications for 18-8 stainless steel material and passivated finish, and it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.
