Conical Sperrkant Washers
1. Description
Sperrkant Washers are Conical Shaped Lock Washers, formed with a serpentined top surface. The conical shape exerts locking force 360° around the underside of the screw head or nut. The serpentined top surface further enhances the locking force and resists the torqued fastener connection potential for loosening under pressure and vibration. Contact Washers are made from high carbon spring steel or stainless steel. They are manufactured in a variety of ID, OD and thickness combinations to suit various applications. Sperrkant Washers can be ordered with either a plain smooth bearing surface or with barbs for grounding purposes when mounting surfaces are painted or coated. The Sperrkant Washers with barbs are also named Grounding Washers.
2. Specification Requirements
M | Type | d | D | s | h | No.of | Weight | ||||
Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | ||||
4 | S | 4.10 | 4.40 | 7.80 | 8.20 | 0.95 | 1.05 | 1.15 | 1.40 | 16 | 0.270 |
M | 4.10 | 4.40 | 9.80 | 10.20 | 0.95 | 1.05 | 1.25 | 1.50 | 16 | 0.470 | |
5 | S | 5.10 | 5.40 | 9.80 | 10.20 | 0.95 | 1.05 | 1.25 | 1.50 | 20 | 0.400 |
M | 5.10 | 5.40 | 11.80 | 12.20 | 1.16 | 1.24 | 1.55 | 1.90 | 20 | 0.790 | |
6 | S | 6.10 | 6.40 | 11.77 | 12.20 | 1.16 | 1.24 | 1.55 | 1.85 | 20 | 0.707 |
M | 6.10 | 6.40 | 13.77 | 14.20 | 1.36 | 1.44 | 1.85 | 2.20 | 20 | 1.240 | |
L | 6.10 | 6.40 | 17.68 | 18.20 | 1.36 | 1.44 | 2.15 | 2.55 | 20 | 2.470 | |
Z | 6.10 | 6.40 | 9.54 | 9.90 | 1.36 | 1.44 | 1.50 | 1.80 | 20 | 0.500 | |
8 | S | 8.20 | 8.56 | 15.77 | 16.20 | 1.36 | 1.44 | 1.90 | 2.40 | 24 | 1.500 |
M | 8.20 | 8.56 | 17.68 | 18.20 | 1.36 | 1.44 | 1.95 | 2.40 | 24 | 2.030 | |
L | 8.20 | 8.56 | 21.73 | 22.25 | 1.84 | 1.96 | 2.60 | 3.00 | 24 | 4.880 | |
Z | 8.20 | 8.56 | 12.34 | 12.70 | 1.36 | 1.44 | 1.55 | 1.85 | 24 | 0.780 | |
10 | S | 10.20 | 10.56 | 19.73 | 20.25 | 1.55 | 1.65 | 2.10 | 2.60 | 24 | 2.640 |
M | 10.20 | 10.56 | 21.73 | 22.25 | 1.55 | 1.65 | 2.25 | 2.75 | 24 | 3.490 | |
L | 10.20 | 10.56 | 26.73 | 27.25 | 2.34 | 2.46 | 3.20 | 3.70 | 24 | 9.200 | |
Z | 10.20 | 10.56 | 15.74 | 16.10 | 1.55 | 1.65 | 1.85 | 2.20 | 24 | 1.420 | |
12 | S | 12.40 | 12.83 | 23.73 | 24.25 | 1.55 | 1.65 | 2.20 | 2.70 | 24 | 3.870 |
M | 12.40 | 12.83 | 26.73 | 27.25 | 1.75 | 1.85 | 2.60 | 3.10 | 24 | 6.010 | |
L | 12.40 | 12.83 | 31.68 | 32.30 | 2.74 | 2.86 | 4.10 | 4.60 | 24 | 14.620 | |
Z | 12.40 | 12.83 | 17.78 | 18.30 | 1.75 | 1.85 | 2.05 | 2.45 | 24 | 1.780 | |
14 | M | 14.40 | 14.83 | 29.63 | 30.25 | 2.34 | 2.46 | 3.20 | 3.70 | 24 | 9.370 |
Z | 14.40 | 14.83 | 20.88 | 21.40 | 2.34 | 2.46 | 2.70 | 3.10 | 24 | 3.190 | |
16 | M | 16.40 | 16.83 | 31.88 | 32.50 | 2.44 | 2.56 | 3.45 | 3.95 | 28 | 10.650 |
Z | 16.40 | 16.83 | 24.08 | 24.60 | 2.44 | 2.56 | 2.90 | 3.30 | 28 | 4.400 | |
18 | M | 18.50 | 19.25 | 34.38 | 35.00 | 2.94 | 3.06 | 4.00 | 4.50 | 28 | 15.200 |
20 | M | 21.00 | 21.75 | 39.38 | 40.00 | 2.94 | 3.06 | 4.20 | 4.70 | 30 | 20.400 |
22 | M | 23.00 | 23.75 | 44.38 | 45.00 | 3.44 | 3.56 | 4.80 | 5.30 | 30 | 30.400 |
24 | M | 25.00 | 25.75 | 49.38 | 50.00 | 3.44 | 3.56 | 5.10 | 5.60 | 32 | 38.200 |
27 | M | 28.00 | 28.85 | 59.26 | 60.00 | 3.91 | 4.09 | 6.10 | 6.60 | 36 | 69.000 |
30 | M | 31.00 | 31.85 | 69.26 | 70.00 | 4.41 | 4.59 | 7.30 | 7.80 | 36 | 109.000 |
*Type：S - Small, M - Medium, L - Large, Z - Head cap screw form
Specification Requirements:
● Dimensions:See dimensions above.
● Available Materials:
– Carbon Steel SAE 1060.
– Stainless Steel.
● Available Finishes:
– Plain w/light protective oil.
– Phosphated.
– Zinc plated clear (ZC).
– Zinc plated yellow (YZ).
– Mechanical zinc yellow.
– Stainless steel.
– Customized.
