19YRS
STAMPINGMASTERS ENTERPRISE CO., LTD.
886-3-4527557
886-3-4511072
No.20, Xinbeiyuan Rd., Zhongli Dist., Taoyuan City 320, Taiwan
www.tohatsu.com.tw

Products

High Precision Washers
Keyway washer (custom size)
FKS.A FKS.S FKB.B FKC.C FKA.A

Washers, also known as washers, are parts that are usually used to pad between the connector and the nut.
The main purpose is as a spacer to protect the surface of the connected parts from being scratched by the nut, to disperse the pressure of the nut on the connected parts, and to reduce the detachment caused by vibration.
Common materials: steel, stainless steel, copper, aluminum, iron, plastic, titanium
Main application industries: industry, mold, equipment...etc
Washers can be divided into three types
1. Flat washer
Function: Prevent the surface damage of the connector, increase the contact area and disperse the pressure.
2. Spring washer
Function: used to flexibly prevent loosening and vibration.
3. Anti-loose washers
Function: To prevent the loosening of the connector and prevent the rotation of the screw.

A gasket is a mechanical seal between two objects, usually used to prevent pressure, corrosion, and pipeline leakage between the two objects.
Since the machined surface cannot be perfect, the irregularities can be filled with spacers.
Main use: sealing of pipe flanges, valves, pumps, pressure vessels, etc. some professional equipment
The main application industries are petrochemical, refining, electric power, metallurgy, manufacturing and other industries

Precision washers are mainly used to adjust the height of the motor and the bearing seat, and to adjust the clearance between the inner and outer rings of the bearing and the shaft end.
The main types are washers/shims plus laminated precision washers/shims (aerospace compliant) for easily changing plate thickness, and base washers for motor mounts and pillow blocks.
Washers/washers that can be used both when tightening screws/bolts and securing spring seats, as well as end plates to prevent gears and bearings from falling off or mechanical parts often used in automation.
Precision washers/gaskets are available in various materials such as iron, hardened steel, stainless steel, brass (brass), copper, aluminum, etc.

Features
1. Provide a variety of gaskets with precise plate thickness tolerances
2. Various specifications and customized size services

application
Bearing inner and outer wheels, molds, reducers, various mechanical bases

Specification

品號組成/Product number composition
TYPE -

內徑/inside diameter

-

外徑/Outside diameter

- 鍵寬/key width - 鍵高/key height -

厚度/Thickness

FKS.A 25 40 8.5 28.5 0.05
尺寸圖/Dimensional drawing
製作條件/Production conditions
K ≧ 2
h > b
Type 材質
FKS.A SUS301
FKS.S SUS304
FKB.B 黃銅(Brass)
FKC.C 銅(Copper)
FKA.A 鋁(Aluminium)
厚度公差表/Thickness tolerance table
表格中"-"符號表是該材質無此厚度材料/The "-" symbol in the table means that the material does not have this thickness.
TYPE 0.05 0.06 0.07 0.08 0.09 0.1 0.15 0.2 0.25 0.3 0.4 0.5 0.6 0.7 0.8 1 1.5 2
FRS.A ±0.003 ±0.003 ±0.004 ±0.004 ±0.004 ±0.004 ±0.005 ±0.006 ±0.007 ±0.007 ±0.009 ±0.010 ±0.010 ±0.012 ±0.013 ±0.013 ±0.02 ±0.05
FRS.S ±0.005 - - - - ±0.01 ±0.02 ±0.02 ±0.02 ±0.02 ±0.02 ±0.02 ±0.025 ±0.03 ±0.03 ±0.035 ±0.12 ±0.17
FRB.B - - - - - - - ±0.02 - ±0.03 ±0.04 ±0.04 ±0.04 - ±0.04 ±0.05 ±0.06 ±0.06
FRC.C - - - - - ±0.02 - ±0.02 - ±0.03 ±0.04 ±0.04 ±0.04 - ±0.04 ±0.05 ±0.06 ±0.06
FRA.A - - - - - - - ±0.03 - ±0.04 ±0.04 ±0.04 ±0.04 - ±0.05 ±0.05 ±0.06 ±0.08
外觀範圍/Appearance range
指定尺寸/Specify size : 0.1
內徑/inside diameter 外徑/Outside diameter 鍵寬/key width 鍵高/key height
6~(D-2xK-3) 13~250 2~((((D-2xK)/2)^2-((h-d)+(d/2))^2)^0.5)x2 7~(((D-2xK)-0.2)/2)+d/2
外觀尺寸公差/Appearance Dimension Tolerance
內徑範圍●外徑範圍●鍵高範圍
inside diameter range and outer diameter range and key height range
內徑公差●鍵高公差
Inside diameter tolerance and key height tolerance
外徑公差
Outer diameter tolerance
2~50 +0.2/-0 +0/-0.2
51~200 +0.5/-0 +0/-0.5
201~250 +0.7/-0 +0/-0.7
如有其他尺寸請在用信件聯繫
If you have other sizes, please contact us by letter

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