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(4 Part Numbers Available)
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Part Number Complete

E-FWSRA-D[10-20/0.5]-V[2,2.6]-E[2-10/0.5]-T[2-10/0.5]
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Specification/Dimensions

  • O.D.(mm)

    • 25
    • 30
    • 40
    • 50

    Clear

  • I.D.(mm)

    • 9
    • 11

    Clear

  • Surface Treatment

    • Not Provided
    • Black Oxide
    • Electroless Nickel Plating
    • Anodize (Clear)

    Clear

  • Countersunk Hole Depth E(Ø)

    • 5
    • 6

    Clear

  • Size Specified Method

    • Custom dimensions
    • Dimension selectable

    Clear

  • Thickness T(mm)

    • 5
    • 6
    • 7
    • 8
    • 10

     [2-10/0.5mm Unit(s)]

    Clear

  • Tapered Hole Depth E(mm)

     [2-10/0.5mm Unit(s)]

    Clear

  • I.D. V(φ)

    • 1
    • 2.6

     [3-30/0.5φ Unit(s)]

    Clear

  • O.D. D(φ)

     [10-20/0.5φ Unit(s)][21-60/1φ Unit(s)]

    Clear

  • type

    • E-FWSRA
    • E-FWSRB
    • E-FWSRC
    • E-FWSRM
    • E-FWSRS
    • E-WSRB
    • E-WSRM
    • E-WSRS

    Clear

  • Material

    • Steel
      • General Structural Steel or Carbon Steel
    • Stainless Steel
      • Austenitic stainless steel
    • Aluminum
      • Aluminum Alloy

    Clear

Days to Ship

    • All
    • 9 Day(s) or Less
    • 11 Day(s) or Less

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Specify Alterations

Metal Washers For Flat Head Bolt

Metal Washers For Flat Head Bolt
You can add up to 6 items per a category to the compare list.

Brand :

MISUMI

MiSUMi Economy

MISUMI

Part Number :
4 Part Numbers Available

E-FWSRA-D[10-20/0.5]-V[2,2.6]-E[2-10/0.5]-T[2-10/0.5]

E-FWSRA-D[10-20/0.5]-V[3-30/0.5]-E[2-10/0.5]-T[2-10/0.5]

E-FWSRA-D[21-60/1]-V[2,2.6]-E[2-10/0.5]-T[2-10/0.5]

E-FWSRA-D[21-60/1]-V[3-30/0.5]-E[2-10/0.5]-T[2-10/0.5]

E-FWSRA-D[10-20/0.5]-V[2,2.6]-E[2-10/0.5]-T[2-10/0.5]
E-FWSRA-D[10-20/0.5]-V[2,2.6]-E[2-10/0.5]-T[2-10/0.5]

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Product DetailProduct Detail
Product Overview
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.
Dimensional Drawing
MISUMI Metal Washers For Flat Head Bolt Drawings, Gasket Specifications
Specifications Overview
・Material Table
StandardConfigurable Counterbored Material Surface TreatmentD (mm)V (mm)E(mm)T(mm)
-E-FWSRCGeneral structural steel or carbon steel-10~602~302~102~10
E-WSRBE-FWSRBFerroferric Oxide Protective Film
E-WSRME-FWSRMElectroless Nickel Plating
-E-FWSRAAluminum AlloyClear Anodized
E-WSRSE-FWSRSAustenitic stainless steel-
If there are requirements for product hardness, refer toMetal Washer Hardened Products.
Specification Table
■Standard Type for Flat Head Bolt
Part NumberT
Selection		EV
TypeD
E-WSRB
E-WSRM		25559
6
306611
8
 
■Custom Dimensions Type for Flat Head Bolt
Part NumberDV
0.5mm increments
(V3 or more)		E
0.5mm increments		Ｔ
0.5mm increments
E-FWSRC
E-FWSRB
E-FWSRM
E-FWSRA
E-FWSRS		10.0～20.0
(0.5mm increments)		2.0

2.6

3～30		2.0～10.0

E≤T		2.0~5.0
5.5~10.0
21～30
(1mm increments)		2.0~5.0
5.5~10.0
31～40
(1mm increments)		2.0~5.0
5.5~10.0
41～50
(1mm increments)		2.0~5.0
5.5~10.0
51～60
(1mm increments)		2.0~5.0
5.5~10.0
(D-V)/2-E≥1->Minimum wall thickness must be more than 1mm.
When E=T, V thickness is 0, so the roundness cannot be guaranteed.
Product Features
Feature 1: There is a wide range of options for inner and outer diameters and thickness, and for the T dimension configurable type, the thickness can be specified in 0.5mm 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.
Usage Method
Example of use for securing the seat surface   
■The bolt connection is stable.   
Usage method of metal spiral wound gaskets
 
Example of use for anti-loosening  Example of use for reinforcement of soft materials
■ By increasing the seat surface to increase friction, it is not prone to loosening.  ■ Prevent the bolts from sinking in.
Metal Spiral Wound Gaskets Larger Image
 
Example of use as spring washer   
Specifications of metal spiral wound gaskets
Precautions
①When D=16 or less, chamfer C is 0.2 or less.
When D=20 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.
Example of Use
Example of using flat washers
Application Industries
Smart Phones Electronic & Electrical Lithium battery
Metal gaskets can be applied in the smart phone industry Specifications of washers used in the electronics and electrical appliances industry Standards of flat washers used in the lithium battery industry
Automotive Robotics Medical
Metal and graphite spiral wound gaskets used in the automotive industry Standards of gaskets used in the robotics industry Specifications of metal spiral wound gaskets used in the medical industry
Related Products
Ultra short head hex socket bolt Adjustment Screw Components Hex Head Stud Axle Pin Bolt
Flat Washer Specifications and Related Products MISUMI Brand Direct-from-Manufacturer Metal Washers Function of MISUMI Washers
Representative model: CBSA6-12 Representative model: ANH4-20 Representative model: DBTS6-3-10
Advantages: space saving, sufficient stock Advantages: Front end hardened, optional length Advantages: Accurate positioning, high shaft precision

Related Documents
Examples of using metal washer/collars ClickExamples of using metal washer/collars
Anti-rust performance and maintenance of metal materials and surface treatment ClickAnti-rust performance and maintenance of metal materials and surface treatment
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  1. 1
Part Number
E-FWSRA-D[10-20/0.5]-V[2,​2.6]-E[2-10/0.5]-T[2-10/0.5]
E-FWSRA-D[10-20/0.5]-V[3-30/0.5]-E[2-10/0.5]-T[2-10/0.5]
E-FWSRA-D[21-60/1]-V[2,​2.6]-E[2-10/0.5]-T[2-10/0.5]
E-FWSRA-D[21-60/1]-V[3-30/0.5]-E[2-10/0.5]-T[2-10/0.5]
Part NumberPriceMinimum Order Qty.Volume DiscountDays to ShipRoHSO.D.
(mm) 		I.D.
(mm) 		Material Surface Treatment Countersunk Hole Depth E
(Ø) 		Size Specified Method Thickness T
(mm) 		Tapered Hole Depth E
(mm) 		I.D. V
(φ) 		O.D. D
(φ)

-

1 Piece(s) 11 Day(s) 10--[Aluminum] Aluminum AlloyAnodize (Clear)-Custom dimensions2 ～ 102 ～ 101 ～ 2.610 ～ 20

-

1 Piece(s) 11 Day(s) 10--[Aluminum] Aluminum AlloyAnodize (Clear)-Custom dimensions2 ～ 102 ～ 103 ～ 3010 ～ 20

-

1 Piece(s) 11 Day(s) 10--[Aluminum] Aluminum AlloyAnodize (Clear)-Custom dimensions2 ～ 102 ～ 101 ～ 2.621 ～ 60

-

1 Piece(s) 11 Day(s) 10--[Aluminum] Aluminum AlloyAnodize (Clear)-Custom dimensions2 ～ 102 ～ 103 ～ 3021 ～ 60

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  1. 1

Basic Information

I.D. Shape Flat Head Screw I.D. Tolerance +0.3~+0.1 Thickness / Length Tolerance ±0.1
O.D. Tolerance 0~-0.2 Sale Type Single Item Hardness(HRC) Without Quenching
Accuracy Normal

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