Galvanized Flat Pad

Flat pad, mainly stamped out with iron plate, the shape is generally a flat washer, there is a hole in the middle.

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Flat pad, mainly stamped out with iron plate, the shape is generally a flat washer, there is a hole in the middle.

Name	washers
	Plain Washer
	Flat pad
	flat gasket
Standard	GB _T 97.1
	GB 96
	GB _T 1230
Size	M3～M64
Grade	4.8 8.8 100HV 140HV 200HV 300HV 400HV
Material	Carbon steel、Stainless steel、355、45#、65Mn
Surface	black, zinc plated, color zinc, hot dipped galvanized, dacromet
Description	Flat pad, mainly stamped out with iron plate, the shape is generally a flat washer, there is a hole in the middle.
Construction operation technology	The effect of flat pads 1. Increase the contact area between the screw and the machine. 2, eliminate the damage to the machine surface when the spring pad is unscrewing. When used, it must be a spring pad and a flat pad, the flat pad is next to the machine surface, and the spring pad is between the flat pad and the nut.
Scope of application	According to the flat washer performance grade, the recommended materials are: For 100HV grade can choose ST12, ST13 and Q235, Q215, Q195 and so on, the surface hardness can reach about 110HV; For 140HV grade can choose 08F, 08Al and 10, 10F and so on, the surface hardness can reach about 140HV; For 200HV and 300HV grade should be selected 45, 50, 60, 70 steel or 65Mn steel, can be tempered by heat treatment to reach 200 ~ 300HV and 300 ~ 400HV technical requirements.

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