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Forged Washer Head Screws The Forged Washer Head Screws are hardened and tempered for increased strength and wear-resistance. After first assembly they become captive in the housing due to washer base feature (for melamine housing) and a circular ring provided in the housing for cheese head screws. These screws are corrosion-protected by zinc plating and passivated under controlled plating process. The screws have a flat bottom which creates a balanced pressure on current bar for conductor-clamping.
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