Washers（Surface Treatment：Trivalent Chromate）

Flat Washer (Single Item Sale)

MISUMI

[Materials] SPCC equivalent/SUS304 stainless steel[Surface treatment] Trivalent chromate JIS B 1256.

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CAD ：

2D / 3D

Spring Washers (Single Sale)

MISUMI

Sizes are from M2 to M24. Shipment from 1 pc. is available as needed.

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CAD ：

2D / 3D

Taper Washer

MISUMI

Sizes are M6 to M24. Shipment from 1 pc. is available as needed.

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CAD ：

2D / 3D

Spring Lock Washer No. 2【1-5,000 Pieces Per Package】

SUNCO

A portion of the flat washer is cut off, with a twisted shape. This twisted shape helps prevent loosening or falling if it is loosened. No. 2 is the most widely available type of spring washer.

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Special Size Round Washer Steel, Standard Plating【1-10,000 Pieces Per Package】

SUNCO

[Features]·When the counterpart is wood, use a round washer with a large outer diameter for wood to prevent depressions[Material]・ steel[Standard Plating]·Bright chromate plating / trivalent white / nickel plating / chrome plating

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Washers/LOWA Type【20-50 Pieces Per Package】

MISUMI

Plain washer thicker than normal plain washers, please use it to prevent sinking for slotted holes

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CAD ：

2D / 3D

Plain Washer【6-55 Pieces Per Package】

TRUSCO NAKAYAMA

[Features]·It has a higher tightening effect than the internal tooth lock washer. A general flat washer to prevent male threads heads or nuts from biting into the base material.

Tapered Washer 5° for Channels【1-230 Pieces Per Package】

SUNCO

Made by SUNCO. For channel steel. Type: beveled washer.

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Steel Flat Washer FFW/FFW-N/FFW-B

HIROSUGI-KEIKI

[Internal Diameter] ø3.2/ø4.2/ø5.2/ø6.2/ø8.2/ø10.2/ø12.2/ø16.2[Material] Thickness (t) 1.0 mm or less: Steel plate (SPCC)Thickness (t) 1.5 mm or more: Carbon steel (S45C)[Surface treatment] Trivalent chromium chromate / Micro Black (black coating) / Electroless nickel plating (Electroless Ni)

JIS Disc Spring Washer Type 1

HEIWA HATSUJYO

[Type (Application)] Spring Washer [Type] Spring Washer [Surface Treatment] (Detail) Tempering Color [Type]Spring Washer, Conical Spring Washer, Load[Type]No. 1 (for Light Loads), JIS Standard Type 1 [Materials] Stainless Steel [Surface Treatment] Trivalent Chromate, Chromate, Nickel Plating, Tempering Color [Nominal Thread (M)] 3 4 5 6 8 10 12 14 16 18 20 22 24 27 30 [Sales Unit] Individual (Available for Purchase as 1pc) Box and Packaging. [Materials]Steel S50C to S65C [Materials]Stainless Steel SUS304-CSP [Outer Diameter D (mm)] 7 9 10 12.5 17 21

Flat, Round Washer【1-1,500 Pieces Per Package】

SUNCO

[Type (application)] Plain Washer [Type] Plain Washer [Materials] Steel [Materials] Steel SPCC [Surface treatment] None, Trivalent chromate, Bright chromate plating, Zinc plating, Chromate plating, Nickel plating, Parkerizing[Nominal Thread (M)] 8 10 12 14 16 18 20 22 24 27 30 33 36 39 42 48 [Sales unit] Minimum Quantity (Available for Purchase from 1 pc) Box and Pkg. [Surface treatment](Details) None, Trivalent chromate, Trivalent black, Trivalent white, Bright chromate plating, Hot dip galvanizing, Chromate plating, Chromate plating, Green chromate, Black chromate, Nickel plating, Parkerizing[Outer diameter (mm)] 17 21 24 28 30 34 37

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JIS Compliant Round Washer Steel, Standard Plating

SUNCO

[Features]·When the counterpart is wood, use a round washer with a large outer diameter for wood to prevent depressions[Material]・ steel[Standard Plating]·Trivalent white / bright chromate plating / chrome plating / nickel plating / electroless nickel plating

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Tapered Washer, for 8° i-beams【1-250 Pieces Per Package】

SUNCO

For steel I beam. [Type (applications)]Plain washer "Type" beveled washer

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Spring Washer【6-291 Pieces Per Package】

TRUSCO NAKAYAMA

● A general washer that prevents screws from loosening.

JIS Toothed Lock Washer【1-60,000 Pieces Per Package】

HEIWA HATSUJYO

[Applications]·Internal Teeth Profile: It is used in inconvenient places such as set screws where teeth appear.·Outside Tooth Profile: It is used in places where more loosening prevention than the internal tooth profile is required.

Disk Spring Lock Washer for Hex Socket Head Bolt (for Heavy Loads)

HEIWA HATSUJYO

[Features]·Heiwa Spring original product·Disc spring washer specially designed for hexagon socket head cap bolts (cap bolts)·Due to the large spring action, the axial force of the screw is sufficiently maintained.·Since the axial force of the bolt is evenly supported around the bearing surface, no bending moment acts on the bolt.·The method of use is the same as the JIS disk spring washer (2 types), but the CDW has serrations on the front and back, which further enhances the locking effect.·There are no burrs on the inner and outer circumferences, so the burden of local stress can be reduced.

Disk Spring Lock Washer, JIS B 1251, Class 2 (for Caps, for Heavy Loads)

HEIWA HATSUJYO

Screw has a spring counter-force when compared to the tightening axial force of bolts. The spring prevents thread loosening caused by vibration and shock. It is possible to obtain a stable tightening axial force without causing fatigue to the tightening material as a result of the low pressure applied to the bearing surface.

Dome Washer with Aperture

SUNCO

Resembles a press-made rosette washer, but has a simple bulging shape that adds no thickness when installed.

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Spring Washer for Caps【1-5,000 Pieces Per Package】

SUNCO

[Materials] Steel, Stainless steel [Surface treatment] None, Trivalent chromate, Bright chromate plating, Nickel plating, Chrome plating, Dacrotized, Painting, Coating, Silver/Copper/Tin plating

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External Toothed Washer

TAIYO STAINLESS SPRING

Tooth protruding in outside diameter side are in combination with things like flat washers, which can prevent rattling and loosening of the screw.

Flat Spring Washer for Screw

HEIWA HATSUJYO

[Materials] Steel, Stainless steel [Surface treatment] None, trivalent chromate, nickel plating, temper color [Inner diameter d (mm)] 4.3 5.3 6.4 8.4 10.5 13 15 17 19 21 23 25 28 31 [Nominal Thread (M)] 4 5 6 8 10 12 14 16 18 20 22 24 27 30 [Thickness t (mm)] 0.45 0.55 0.6 0.9 1.1 1.2 1.4 1.6 1.8 2 2.2 2.5 2.8 3 [Materials]Steel S50C to S65C [Materials]Stainless steel SUS304 [Surface treatment](Detail) Untreated, Temper color [Outer diameter D (mm)] 7.5 9 10.5 13.5 16.5 19

Inner Toothed Washer

OCHIAI

[Internal diameters d (mm)] 3, 4, 5, 6, 8, 10, 12, 20[Thread sizes (M)] 3, 4, 5, 6, 8, 10[Materials] Steel, phosphor bronze[Internal diameters d (mm)] 2.7, 3.2, 3.7, 4.3, 4.8, 5.3, 6.4, 7.4, 8.4, 10.5, 12.5, 14.5, 16.5, 19, 21, 23, 25[Thread sizes (M)] 2.5, 3, 3.5, 4, 4.5, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20, 22, 24[Thicknesses t (mm)] 0.3, 0.45, 0.5, 0.6, 0.8, 0.9, 1, 1.2, 1.4, 1.6[Materials] Steel S65C[External diameters D (mm)] 5.7, 6.5, 7.5, 8.5, 9.5, 10

JIS Spring Lock Washer【80-50,000 Pieces Per Package】

HEIWA HATSUJYO

[Type (application)] Spring Washer [Type] Spring Washer [Type]Spring Washer, standard load[Type]No. 2 (for medium load) [Materials] Steel, Stainless steel [Surface treatment] Anti-rust Oil Only, Trivalent Chromate, Chromate, Nickel Plating, Temper Color [Inner diameter d (mm)] 2.1 2.4 2.7 3.1 4.1 5.1 6.1 6.5 8.2 10.2 11.4 12.2 13 14.2 16.2 18.2 20.2 22.5 24.5 [Nominal Thread (M)] 2 2.3 2.6 3 4 5 6 8 10 12 14 16 18 20 22 24 [Nominal Thread (inch)] 1/4 7/16 1/2 [Thickness t (mm)] 0.5 0.6 0.7 1 1.3 1.5

S45C Round Washer 22H【1-300 Pieces Per Package】

SUNCO

[Type (Application)] Plain Washer [Type] Plain Washer [Materials] Steel [Materials]Steel S45C [Surface Treatment] None, Trivalent Chromate, Uni-Chromate Plating, Zinc Plating, Chromate Plating [Inner Diameter d (mm)] 8 10 13 15 17 19 21 23 25 28 39 66 70 [Nominal Thread (M)] 8 10 13 15 17 19 21 23 25 28 39 66 70 [Thickness t (mm)] 1.6 2 2.5 3 4 6 9 [Sales Unit] Individual (Available for Purchase as 1pc), Box and Packaging. [Surface Treatment](Details) None, Trivalent White, Uni-Chromate Plating, Hot-Dip Galvanizing, Chromate Plating, Chromate Plating, Black Chromate[Outer Diameter (mm)] 17 21 24 28 30 34

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S45C High Tension Washer【1-1,500 Pieces Per Package】

SUNCO

[Features]·If the mating material is wood, use a round washer for wood with a large outer diameter to prevent sinking.

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Toothed Washer, Lock Type

TAIYO STAINLESS SPRING

The teeth protruding into the inner diameter prevent rattling and loosening of screws when combined with flat washers, etc.

Spring Washer No. 3, for Heavy Loads【1-1,500 Pieces Per Package】

SUNCO

For use with heavy loads. The screw has a larger outer diameter than No. 2. A twisted conformation is created, with part of the flat washer cut off. This twisted shape helps prevent loosening or falling if the screw is loosened.

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Turtle Shell Washer【400 Pieces Per Package】

SUNCO

Used with a hook bolt when installing corrugated plates, it can reduce the amount of packing.

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Pawl Washer

SUNCO

It has been used for locking. Features a nail-shaped protrusion cut from a portion outside the round flat washer, which can be bent to prevent turning.

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Single Tongued Washer【1-50 Pieces Per Package】

SUNCO

Has been used to prevent loosening. Bending the protruding part of the round flat washer around the nut prevents it from coming loose or turning. Tongue is one sheet.

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S45C High-Tension Round Washer【1-1,500 Pieces Per Package】

SUNCO

· Type (application): Plain washer · Type: Plain washer · Material: Steel · Material: Steel, S45C · Surface treatment: None, trivalent chromate, bright chromate plating, zinc plating, chromate plating · Inner diameter (mm): 4.5, 5.5, 10.5, 13.5, 15, 17, 18, 22, 24, 26, 34.5, 37.5 · Thread: M4, M5, M10, M13, M15, M17, M18, M22, M24, M26, M34, M37 · Thickness (mm): 1.6, 3.2, 4.5, 5, 6, 8 · Sales unit: Low quantity (available for purchase from 1pc), box and package. · Surface treatment (details): None, trivalent chromate, trivalent black, trivalent white, bright chromate plating, molten zinc plating, chromate plating

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JIS Disc Spring Washer Type 2

HEIWA HATSUJYO

[Type (application)] Spring Washer [Type] Spring Washer [Sales unit] Minimum Quantity (Available for Purchase from 1 pc) [Type] Spring Washer, Conical Spring Washer, Load[Type]No. 1 (for light load), JIS standard Type 2 [Materials] Steel, Stainless steel [Surface treatment] None, trivalent chromate, nickel plating, temper color [Nominal Thread (M)] 4 5 6 8 10 12 14 16 18 20 22 24 27 30 [Thickness t (mm)] 0.45 0.55 0.6 0.9 1.1 1.2 1.4 1.6 1.8 2 2.2 2.5 2.8 3 [Materials]Steel S50C to S65C [Materials] Stainless steel SUS304 [Surface treatment](Detail) Untreated, Temper color

Whitworth Round Washer【1-1,500 Pieces Per Package】

SUNCO

[Materials] Steel, Stainless steel [Surface treatment] None, Trivalent chromate, Bright chromate plating, Zinc plating, Chromate plating, Nickel plating, Parkerizing, Painting, Coating

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JIS Homer (Heading) Type Round Washer【100-1,500 Pieces Per Package】

SUNCO

[Type (application)] Plain Washer [Type] Plain Washer [Materials] Steel [Sales unit] Box/package [Materials] Steel SPCC [Surface treatment] None, trivalent chromate, bright chromate plating, chromate plating, nickel plating [Inner diameter d (mm)] 6 8 10 12 13.5 16 20 22 24 [Nominal Thread (M)] 6 8 10 12 13 16 20 22 24 [Thickness t (mm)] 1 1.6 2.3 2.6 3.2 4 [Surface treatment](Details) None, Trivalent white, Bright chromate plating, Chromate plating, Green chromate, Black chromate, Nickel plating [Outer diameter (mm)] 13 18 22 26 32 40 44 48

Spring Washer, Spring Washer No. 1【300-2,000 Pieces Per Package】

IMPERIAL

[Material]·Made of Steel: hard steel wire, hard steel wire rod　·Made of stainless steel: SUS304 series, SUS316L / SUS31

Raised Rosette Washer (Saw Method)【300-2,000 Pieces Per Package】

SUNCO

· Type (application): Special[Shape]· Type: Rosette washer · Material: Brass · Surface treatment: Trivalent chromate, chromate plating · Inner diameter (mm): 3.3, 4.3, 5.3, 6.3, 8.3 · Thread: M3, M4, M5, M6, M8 · Thickness (mm): 2, 2.4, 2.8, 3.3, 4.5 · Sales unit: Low quantity (available for purchase from 1pc), box and package. · Surface treatment (details): Trivalent chromate, trivalent black, trivalent white, chromate plating · Outer diameter (mm): 9, 12, 14, 16, 22

Tapered Washer【3-7 Pieces Per Package】

TRUSCO NAKAYAMA

● For use with C channel steel. Has a 5° angle so that external threads can be used in parallel with the target material.● Trivalent chromate products have a low impact on the environment.

Externally Toothed Washer【24-210 Pieces Per Package】

TRUSCO NAKAYAMA

● Has a higher clamping effect than internally toothed washers.

Disk Spring Lock Washer for Hex Socket Head Bolt (for Light Loads)

HEIWA HATSUJYO

[Features]·Heiwa Spring original product·Disc spring washer specially designed for hexagon socket head cap bolts (cap bolts)·Due to the large spring action, the axial force of the screw is sufficiently maintained.·Since the axial force of the bolt is evenly supported around the bearing surface, no bending moment acts on the bolt.·The method of use is the same as the JIS disk spring washer (2 types), but the CDW has serrations on the front and back, which further enhances the locking effect.·There are no burrs on the inner and outer circumferences, so the burden of local stress can be reduced.

Spring Lock Washer No. 2, Reverse Winding【1-2,000 Pieces Per Package】

SUNCO

Spring washer for left screws. A portion of the flat washer is cut off, with a twisted shape. This twisted shape helps prevent loosening or falling if it is loosened.

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Disc Spring Lock Washer, JIS B 1251, Class 1, for Screws, for Light Loads

SUNCO

Has a spring counter-force comparable to tightening axial force of bolts, preventing thread loosening caused by vibration and shock. It is possible to obtain a stable tightening axial force without fatiguing the tightening material due to the low pressure applied to the bearing surface.

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Square Plastic Washer【1-200 Pieces Per Package】

SUNCO

[Materials] Steel, Stainless steel [Surface treatment] None, trivalent chromate, bright chromate plating, zinc plating, chromate plating, nickel plating

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Small Square Washer【1-800 Pieces Per Package】

SUNCO

These square washers are mainly used for wood. etc. Type (Application): Special shape / Type: Square washer / Material: Steel

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Toothed Washer, Dished Type【1-20,000 Pieces Per Package】

OUMI OFT

Suitable for use in places where heavy loads are required. The number of teeth is for reference only.

Double Tongued Washer【1-3,000 Pieces Per Package】

SUNCO

Has been used to prevent loosening. Bending the protruding part of the round flat washer around the nut prevents it from coming loose or turning. Tongue is two sheets.

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