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M2X0.4 Pan Phillips SEMS with Oversized Flat Washer - Steel, Plated
SEMS screw combining a JIS-standard pan head with an integrated oversized flat washer, offering efficient assembly (no need to manually position a separate washer) and reliable clamping force in a single fastener.
The larger surface area of the pre-assembled free-spinning flat washer spreads the clamping force more widely across the material, which helps reduce the risk of pull-through or material damage.
The oversized washer footprint also adds friction and stability in dynamic or high-vibration environments, such as in automotive or machinery applications.
Material
Steel with zinc plating provides enhanced corrosion resistance, this screw is suitable for both indoor and moderately corrosive environments.
Applications
Manufactured to Japanese Industrial Standards (JIS), the screw features a smaller diameter pan head than its ISO or DIN counterparts, making it ideal for applications requiring OEM-style hardware, particularly in Japanese automotive, motorcycle, and machinery restoration.
Also Known As: SEMS screw, washer-head screw, combination screw, or captive washer screw (JIS style)
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