Serrated Washers - SW Series
IIS Serrated safet Washers are ready to fit washer to sustain preload and avoid loosening. When you Tighten the Screw, the Serrations crunch into the mating faces and prevents the screw from loosening up due to vibrations etc. Also the
Disc Shape supports to hold the necessary tension. They are available in various size for Bolts and Screws. Serrated Washers are Disc Springs with Trapezodial Cross Section on Both Sides for gripping. The Diameters for Serrared Washer are matched to screw dimensions. The Outer Diamater of Washer is matched to the head diamater of pan head. This allows using the Serrated Safety Washers with almost every Screw and Bolt including recessed heads except countershunk screw.

Advantages :

1. Used for High Vibration resistance due to positive rib contact.
2. Excellent pretensioning.
3. Through proper radius selection, no splitting / cracking accure during Tightening.
4. The concentric force of Washer eleminates the chances of bending the Fastener.
5. Extensive application and flexibility.
IIS has ready Stock of all sizes of Serrated Safety Washers.

Material : Prime Quality Spring Steel, Stainless Steel. Other Special material are available on request.

Finish : Natural, Phosphated and Oiled.

Check below for our entire size of Serrated Safety Washers (SW Series) :
Serrated Washers
Serrated Washers

 

Serrated Safety Washers (SW Series) :		  
 
Part No.
Inches
mm
For Bolts
Nominal Size (mm)
De
di
t
h (min)
De
di
t
h (max)
h (min)
Inch
Metric
SW - 030103
0.126
0.067
0.014
0.024
3.20
1.70
0.35
0.60
0.38
1.6
1.60
SW - 040203
0.157
0.087
0.014
0.024
4.00
2.20
0.35
0.60
0.39
2
2.00
SW - 040204
0.189
0.106
0.018
0.035
4.80
2.70
0.45
0.90
0.49
2.5
2.50
SW - 050304
0.217
0.126
0.018
0.035
5.50
3.20
0.45
0.90
0.51
1/8"
3
3.00
SW - 060304
0.236
0.146
0.018
0.035
6.00
3.70
0.45
0.90
0.52
3.5
3.50
SW - 070405
0.276
0.169
0.020
0.039
7.00
4.30
0.50
1.00
0.59
5/32"
4
4.00
SW - 090506
0.354
0.209
0.024
0.043
9.00
5.30
0.60
1.10
0.73
3/16"
5
5.00
SW - 100607
0.394
0.252
0.028
0.047
10.00
6.40
0.70
1.20
0.82
6
6.00
SW - 090607
0.374
0.264
0.028
0.047
9.50
6.70
0.70
1.20
0.79
1/4"
6.35
SW - 120707
0.472
0.291
0.028
0.051
12.00
7.40
0.70
1.30
0.89
7
7.00
SW - 130808
0.512
0.331
0.031
0.055
13.00
8.40
0.80
1.40
0.98
5/16"
8
8.00
SW - 161010
0.630
0.413
0.039
0.063
16.00
10.50
1.00
1.60
1.21
3/8"
10
10.00
SW - 151110
0.626
0.457
0.039
0.063
15.90
11.60
1.00
1.60
1.18
7/16"
11.10
SW - 181311
0.709
0.512
0.043
0.067
18.00
13.00
1.10
1.70
1.31
12
12.00
SW - 191311
0.748
0.539
0.043
0.071
19.00
13.70
1.10
1.80
1.33
1/2"
12.70
SW - 221512
0.866
0.591
0.047
0.079
22.00
15.00
1.20
2.00
1.52
9/16"
14
14.00
SW - 241713
0.945
0.669
0.051
0.083
24.00
17.00
1.30
2.10
1.63
5/8"
16
16.00
SW - 271915
1.063
0.748
0.059
0.091
27.00
19.00
1.50
2.30
1.85
18
18.00
SW - 302015
1.181
0.787
0.059
0.098
30.00
20.00
1.50
2.50
1.98
3/4"
19.00
SW - 302115
1.181
0.827
0.059
0.098
30.00
21.00
1.50
2.50
1.94
20
20.00
SW - 332315
1.299
0.906
0.059
0.106
33.00
23.00
1.50
2.70
2.08
7/8"
22
22.00
SW - 362518
1.417
1.008
0.071
0.114
36.00
25.60
1.80
2.90
2.32
24
24.00
SW - 382720
1.496
1.063
0.079
0.122
38.00
27.00
2.00
3.10
2.52
1"
25.40
SW - 392820
1.535
1.126
0.079
0.122
39.00
28.60
2.00
3.10
2.52
27
27.00
SW - 453120
1.772
1.244
0.079
0.142
45.00
31.60
2.00
3.60
2.78
1.1/8"
30
30.00
SW - 543825
2.126
1.496
0.098
0.165
54.00
38.00
2.50
4.20
3.38
1.3/8"
36
36.00
 

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