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Washers
Washers are primarily used as a seat to distribute load, but they may also provide spring tension, span oversize holes, insulate, seal, or provide electrical connection. Various kinds include flat, conical, and helical-spring washers, tooth or ribbed lock washers, and special-purpose washers.
The washer size to be used with a particular screw size is determined by the first number in the screw size.

Helical-spring washers
for example: spring washers ANSI l-9(table-1),DIN 127-B(table-2),B.S.(table-3),etc.
Table-1 Spring washers IFI L-9 (mm)

Nominal size

d1

d2

T

M PCS
PER CTN

KG N.W.
PER CTN

6

0.141

0.250

0.031

150

17

8

0.167

0.293

0.040

100

18

10

0.193

0.334

0.047

75

23

12

0.220

0.377

0.056

50

24.5

1/4

0.254

0.489

0.062

22.5

22.5

5/16

0.317

0.586

0.078

12.5

22

3/8

0.380

0.683

0.094

8

22

7/16

0.443

0.779

0.109

5.5

22

1/2

0.506

0.873

0.125

3.75

22

9/16

0.570

0.971

0.141

2.5

20

5/8

0.635

1.079

0.156

2

22

11/16

0.698

1.176

0.172

3/4

0.760

1.271

0.188

1.25

22

13/16

0.824

1.367

0.203

7/8

0.887

1.464

0.219

0.75

21

15/16

0.950

1.560

0.234

1

1.017

1.661

0.250

0.5

20.5

1-1/16

1.080

1.756

0.266

1-1/8

1.144

1.853

0.281

0.4

22.5

1-13/16

1.208

1.950

0.297

1-1/4

1.271

2.045

0.312

0.3

22

1-5/16

1.334

2.141

0.328

1-3/8

1.398

2.239

0.344

0.2

21

1-7/16

1.462

2.334

0.359

1-1/2

1.525

2.430

0.375

0.15

19.5

Material: spring steel-1566/stainless steel- 304A , 312A , 316A /brass
Surface treatments: plating, black.
The plating industry of hengchang fasteners specializes in nickel plating, chrome plating and galvanization. Among the list of our orders received are precision machine parts, hand tools, leisure goods, automobile parts and electrical component parts for automobiles. We can deal with items in various sizes from small to large in order to materialize the needs of our customers with our technology and mobility.
Others: besize in normal type, we can offer spring washers on ANSI in light type, heavy type, narrow type, wide type, and high-strengthen type.
Table-2 Spring washers DIN 127-B(mm) <click to download>
Table-3 Spring washers B.S.(mm) <click to download>
Flat washers
Also known as plain washers, provide a bearing surface for a nut or screw head, cover large clearance holes, and distribute fastener loads over a large area, particularly on soft materials. This, in turn, reduces contact stresses and can thus reduce relaxation.Our offer list:
Table-4 Flat washers

Catalog

Standard

Specification

Material

flat washers

DIN 125-A

1.6-30mm

steel,stainless steel,brass,others

DIN 125-B

5.3-30mm

DIN 126(grade C)

5.5-56mm

ANSI B18.22.1 1981
IFI L-2(K-4) narrow

6″-21/4″

ANSI B18.22.1 1981
IFI L-2(K-4)? wide

6″-21/4″

ASTM F-436
hardened steel washers

1/4″-14/4″

Material: any steel/stainless steel- 304A , 312A , 316A /brass
Surface treatments: plating, black.
The plating industry of hengchang fasteners specializes in nickel plating, chrome plating and galvanization. Among the list of our orders received are precision machine parts, hand tools, leisure goods, automobile parts and electrical component parts for automobiles. We can deal with items in various sizes from small to large in order to materialize the needs of our customers with our technology and mobility

Conical washers
These are used with screws to add spring take-up to screw elongation. Type L conical washers are designed for use with unhardened screws. Type H series is for hardened screws. Conical washers are designed to flatten at approximately one-half the ultimate load of the screw.
circlips for holes & shafts
They are Special-purpose washers
 
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