republic of south africa JL128 series - Electroplating screw

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republic of south africaElectroplating screw series

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Product Description

Technical index:
Tempered hardness: HV270-320
Medium frequency hardness: HV800-900
Chrome plating hardness: HV650-750
Chrome plating layer hardness: 0.025mm-0.085mm
Surface roughness: Ra0.4
Screw straightness: 0.015mm
Scope of application: white, transparent, engineering plastics

Jiayue	China	Japan	USA	Germany
JL	QD	JIS	AISI	DIN
JL128	42CrMo	SCM440	5140	1.7035

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