{"id":19746,"date":"2025-05-05T13:40:47","date_gmt":"2025-05-05T13:40:47","guid":{"rendered":"https:\/\/stainlessbolts.com\/gemstar\/?page_id=19746"},"modified":"2026-05-27T05:59:40","modified_gmt":"2026-05-27T05:59:40","slug":"external-tooth-lock-washers","status":"publish","type":"page","link":"https:\/\/stainlessbolts.com\/gemstar\/external-tooth-lock-washers\/","title":{"rendered":"External Tooth Lock Washers"},"content":{"rendered":"\t\t
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Stainless Steel External Tooth Lock Washers - Grade 202, 304, 316, A2, A2-70 <\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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External Tooth Lock Washers are a type of lock washer featuring multiple outward-facing teeth (serrations) around the outer edge. These teeth bite into the surface of the mating materials to resist rotation and prevent loosening caused by vibration or torque. They are ideal for applications requiring a strong grip on larger bearing surfaces.<\/p><\/div>\t\t\n\t<\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t <\/div>\r\n <\/div>\r\n \t\t\t<\/div>\n\t\t<\/section>\n\t\t <\/div>\r\n <\/div>\r\n \t\t\t<\/div>\n\t\t<\/section>\n\t\t

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Spring Lock Washer Sizes and Dimensions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\t\t
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Below is a standard technical specification table for External Tooth Lock Washers (based on common metric sizes as per DIN 6798-A or ANSI B18.21.1)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\t\t

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Washer Size (Nominal Bolt Size) <\/td>\n
Inner Diameter (d) <\/div><\/td>\n
Outer Diameter (D) <\/div><\/td>\n
Thickness<\/div><\/td>\n
Number of Teeth <\/div><\/td>\n
Standard <\/div><\/td>\n <\/tr>\n
M2<\/td>\n
2.2 mm<\/div><\/td>\n
4.8 mm<\/div><\/td>\n
0.3 mm<\/div><\/td>\n
8–10<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M3<\/td>\n
3.2 mm<\/div><\/td>\n
6.2 mm<\/div><\/td>\n
0.4 mm<\/div><\/td>\n
10–12<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M4 <\/td>\n
4.3 mm<\/div><\/td>\n
7.6 mm<\/div><\/td>\n
0.5 mm<\/div><\/td>\n
10–12<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M5 <\/td>\n
5.3 mm<\/div><\/td>\n
9.2 mm<\/div><\/td>\n
0.6 mm<\/div><\/td>\n
12–14<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M6<\/td>\n
6.4 mm<\/div><\/td>\n
11.0 mm<\/div><\/td>\n
0.8 mm<\/div><\/td>\n
12–14<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M8<\/td>\n
8.4 mm<\/div><\/td>\n
14.5 mm<\/div><\/td>\n
1.0 mm<\/div><\/td>\n
14–16<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M10<\/td>\n
10.5 mm<\/div><\/td>\n
18.0 mm<\/div><\/td>\n
1.2 mm<\/div><\/td>\n
16–18<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M12<\/td>\n
13.0 mm<\/div><\/td>\n
21.0 mm<\/div><\/td>\n
1.4 mm<\/div><\/td>\n
16–18<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M16<\/td>\n
17.0 mm<\/div><\/td>\n
27.0 mm<\/div><\/td>\n
1.6 mm<\/div><\/td>\n
18–20<\/div><\/td>\n
DIN 6798-A<\/div><\/td>\n <\/tr>\n
M20<\/td>\n
21.0 mm<\/div><\/td>\n
33.0 mm<\/div><\/td>\n
2.0 mm<\/div><\/td>\n
20–22<\/div><\/td>\n
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