Metal Washers Thickness Tolerance Selectable

It is generally used as a component that is cushioned at the workpiece connector and plays a role of precise adjustment of the clearance on the cushioned part.
It can also be used to protect the surface of the connected part from being scratched by the nut and disperse the pressure generated by the nut on the connected part.

・Material Table

Part Number	Material	Surface Treatment	Hardness	D (mm)	V (mm)	T(mm)
E-AWSC	General structural steel or carbon steel	-	-	5~60	3~58	1~10
E-AWSB		Ferroferric Oxide Protective Film
E-AWSM		Electroless Nickel Plating
E-AWSS	Austenitic stainless steel	-
E-AWSH	Martensitic stainless steel	-	45～50HRC

Hardened products made of stainless steel (AWSH) may be discolored due to hardening.

T Dimension Tolerance Selection
B	-0.1 -0.3	SB	-0.01 -0.03
C	+0.3 +0.1	SC	+0.03 +0.01
D	0 -0.2	SD	0 -0.02
E	+0.2 0	SE	+0.02 0

■ T Dimension Tolerance Selection, Custom Dimensions

Part Number	T Tolerance Selection	D	V 0.5mm increments	T 0.1mm increments
E-AWSC E-AWSB E-AWSM E-AWSS E-AWSH	-Standard Grade- B C D E -Precision Grade- SB SC SD SE	5.0～10.0 0.5mm increments	3.0~58.0	1.0~2.9
				3.0~5.0
				5.1~10.0
		10.5～20.0 0.5mm increments		1.0~2.9
				3.0~5.0
				5.1~10.0
		21～30 0.5mm increments		1.0~2.9
				3.0~5.0
				5.1~10.0
		31～40 1mm increments		1.0~2.9
				3.0~5.0
				5.1~10.0
		41～50 1mm increments		1.0~2.9
				3.0~5.0
				5.1~10.0
		51～60 1mm increments		1.0~2.9
				3.0~5.0
				5.1~10.0
D≤60->V≤D-2

Feature 1: There is a wide range of options for inner and outer diameters and thickness, and the thickness can be specified in 0.1mm increments.
Feature 2: High-precision products made by cutting and machining can realize high-precision spatial adjustment.
Feature 3: Compared with standard washers, metal washers will not be dented after the connected part is screwed in due to the locking, and cause the bolts to loosen.
Feature 4: Compared with standard stamped washers, metal washers increase the friction with the mounting part, which can prevent loosening.

①When D=16 or less, chamfer C is 0.2 or less.
When D=16.5 or more, chamfer C is 0.5 or less.
②Metal washer is a turned product, not a stamped part.
③When the relative humidity of the operating environment is high and certain anti-rust ability is required, please choose products with electroless nickel plating surface treatment or stainless steel SUS3 series materials.
④When the operating environment requires certain abrasion resistance and hardness for metal washers, please give priority to metal washer quenched products.