Split Lock Washers

436 products

Split Lock Washers

Split Lock Washers are critical components in preventing fastener loosening due to vibration, thermal expansion, or dynamic loads. Our selection includes split, tooth, and wedge-lock designs manufactured from high-strength materials like spring steel and stainless steel. These washers provide a reliable mechanical lock by creating tension or biting into the mating surface, ensuring long-term structural integrity in automotive, aerospace, and heavy machinery applications. Engineered to meet rigorous industrial standards, they offer exceptional performance in high-vibration environments.

System of Measurement
Inch Metric
For Screw Size
1 1/2" 1 1/4" 1 1/8" 1 3/4" 1 3/8" 1 5/8" 1 7/8" 1" 1/2" 1/4" 2 1/2" 2 1/4" 2" 3/4" 3/8" 5/16" 5/8" 7/16" 7/8" 9/16" M10 M12 M14 M16 M18 M2 M2.5 M2.6 M20 M22 M24 M27 M3 M3.5 M30 M33 M36 M4 M42 M48 M5 M6 M7 M8 No. 0 No. 1 No. 10 No. 12 No. 2 No. 3 No. 4 No. 5 No. 6 No. 8
Specifications Met
ASME B18.21.1 ASME B18.21.2M DIN 127B DIN 128A DIN 128B DIN 6905
ID
0.062" 0.075" 0.094" 0.107" 0.12" 0.133" 0.148" 0.174" 0.2" 0.227" 0.26" 0.322" 0.385" 0.45" 0.512" 0.574" 0.641" 0.766" 0.894" 1.024" 1.153" 1.28" 1.408" 1.534" 1.663" 1.789" 1.914" 2.039" 2.293" 2.543" 2.3 mm 2.4 mm 2.6 mm 2.7 mm 2.9 mm 3 mm 3.1 mm 3.4 mm 3.6 mm 3.9 mm 4.1 mm 4.4 mm 4.5 mm 4.6 mm 5.1 mm 5.4 mm 5.5 mm 6.1 mm 6.2 mm 6.5 mm 7.4 mm 7.5 mm 8.1 mm 8.2 mm 8.5 mm 9.3 mm 10.2 mm 10.7 mm 11 mm 12.2 mm 12.3 mm 12.7 mm 14.2 mm 14.7 mm 16.2 mm 16.4 mm 17 mm 18.2 mm 19 mm 20.2 mm 20.5 mm 21.2 mm 22.5 mm 24.5 mm 25.5 mm 27.5 mm 28.5 mm 30.5 mm 31.7 mm 33.5 mm 37.7 mm 43.7 mm 50.5 mm
OD
0.137" 0.15" 0.172" 0.195" 0.209" 0.236" 0.25" 0.293" 0.334" 0.377" 0.487" 0.583" 0.68" 0.776" 0.869" 0.965" 1.073" 1.265" 1.459" 1.656" 1.847" 2.036" 2.219" 2.419" 2.553" 2.679" 2.811" 2.936" 3.221" 3.471" 4.4 mm 4.6 mm 5.1 mm 5.2 mm 5.6 mm 6.2 mm 6.7 mm 7 mm 7.6 mm 8.6 mm 9.2 mm 11 mm 11.8 mm 12.1 mm 12.8 mm 14 mm 14.8 mm 15.2 mm 17 mm 18 mm 18.1 mm 19.7 mm 21.1 mm 21.7 mm 24.1 mm 27.4 mm 27.9 mm 29.4 mm 33.6 mm 33.8 mm 35.9 mm 40 mm 40.7 mm 43 mm 48.2 mm 55.2 mm 58.2 mm 68.2 mm 75 mm
Material
18-8 Stainless Steel 316 Stainless Steel Aluminum Black-Oxide 18-8 Stainless Steel Black-Oxide Steel Blue Dyed Steel Bronze Galvanized Steel Hot-Dipped Galvanized Steel K500 Nickel Steel Zinc Yellow-Chromate Plated Steel Zinc-Flake Coated Steel Zinc-Plated Steel
Thickness
0.015" 0.020" 0.025" 0.031" 0.040" 0.047" 0.056" 0.062-0.077" 0.062" 0.078-0.097" 0.078" 0.094-0.115" 0.094" 0.109" 0.125-0.151" 0.125" 0.141" 0.156-0.189" 0.156" 0.188" 0.219" 0.25" 0.281" 0.312" 0.344" 0.375" 0.389" 0.422" 0.440" 0.4-0.6 mm 0.5-0.7 mm 0.5 mm 0.6 mm 0.7-0.9 mm 0.7 mm 0.8-1.0 mm 0.8 mm 0.9 mm 1 mm 1.1-1.3 mm 1.2 mm 1.3 mm 1.5-1.7 mm 1.5 mm 1.6 mm 1.7 mm 1.8 mm 1.9-2.1 mm 1.9 mm 2.0-2.4 mm 2.0 mm 2.1 mm 2.3-2.7 mm 2.3 mm 2.5 mm 2.6 mm 2.7 mm 2.8-3.2 mm 2.9 mm 3.0 mm 3.3-3.7 mm 3.8-4.2 mm 3.8 mm 3.9 mm 4.8-5.2 mm 4.8 mm 5.7 mm 5.8-6.2 mm 5.8 mm 6.8-7.2 mm 7.2 mm
Part Number Material For Screw Size ID OD Thickness Washer Type Hardness Specifications Met Fastener Strength Grade/Class
1308FA00097 316 Stainless Steel M12 12.7 mm 21.1 mm 2.3-2.7 mm Split Lock Not Rated DIN 127B -
1308FA00098 316 Stainless Steel M14 14.7 mm 24.1 mm 2.8-3.2 mm Split Lock Not Rated DIN 127B -
1308FA00099 316 Stainless Steel M16 17 mm 27.4 mm 3.3-3.7 mm Split Lock Not Rated DIN 127B -
1308FA00100 316 Stainless Steel M18 19 mm 29.4 mm 3.3-3.7 mm Split Lock Not Rated DIN 127B -
1308FA00089 316 Stainless Steel M2 2.4 mm 4.4 mm 0.4-0.6 mm Split Lock Not Rated DIN 127B -
1308FA00090 316 Stainless Steel M2.5 2.9 mm 5.1 mm 0.5-0.7 mm Split Lock Not Rated DIN 127B -
1308FA00101 316 Stainless Steel M20 21.2 mm 33.6 mm 3.8-4.2 mm Split Lock Not Rated DIN 127B -
1308FA00102 316 Stainless Steel M24 25.5 mm 40 mm 4.8-5.2 mm Split Lock Not Rated DIN 127B -
1308FA00091 316 Stainless Steel M3 3.4 mm 6.2 mm 0.7-0.9 mm Split Lock Not Rated DIN 127B -
1308FA00103 316 Stainless Steel M3.5 3.9 mm 6.7 mm 0.7-0.9 mm Split Lock Rockwell C35 DIN 127B -
1308FA00104 316 Stainless Steel M30 31.7 mm 48.2 mm 5.8-6.2 mm Split Lock Rockwell C35 DIN 127B -
1308FA00092 316 Stainless Steel M4 4.5 mm 7.6 mm 0.8-1.0 mm Split Lock Not Rated DIN 127B -
1308FA00093 316 Stainless Steel M5 5.4 mm 9.2 mm 1.1-1.3 mm Split Lock Not Rated DIN 127B -
1308FA00094 316 Stainless Steel M6 6.5 mm 11.8 mm 1.5-1.7 mm Split Lock Not Rated DIN 127B -
1308FA00095 316 Stainless Steel M8 8.5 mm 14.8 mm 1.9-2.1 mm Split Lock Not Rated DIN 127B -
1307FA00183 316 Stainless Steel No. 0 0.062" 0.137" 0.015" Split Lock Rockwell C35 - -
1307FA00169 316 Stainless Steel No. 10 0.2" 0.334" 0.047" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00191 316 Stainless Steel No. 10 0.2" 0.334" 0.047" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00185 316 Stainless Steel No. 12 0.227" 0.377" 0.056" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00165 316 Stainless Steel No. 2 0.094" 0.172" 0.020" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00187 316 Stainless Steel No. 2 0.094" 0.172" 0.020" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00186 316 Stainless Steel No. 3 0.107" 0.195" 0.025" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00166 316 Stainless Steel No. 4 0.12" 0.209" 0.025" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00188 316 Stainless Steel No. 4 0.12" 0.209" 0.025" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00184 316 Stainless Steel No. 5 0.133" 0.236" 0.031" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00167 316 Stainless Steel No. 6 0.148" 0.25" 0.031" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00189 316 Stainless Steel No. 6 0.148" 0.25" 0.031" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00168 316 Stainless Steel No. 8 0.174" 0.293" 0.040" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00190 316 Stainless Steel No. 8 0.174" 0.293" 0.040" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00035 Aluminum 1/2" 0.512" 0.869" 0.125" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00032 Aluminum 1/4" 0.26" 0.487" 0.062" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00037 Aluminum 3/4" 0.766" 1.265" 0.188" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00034 Aluminum 3/8" 0.385" 0.68" 0.094" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00033 Aluminum 5/16" 0.322" 0.583" 0.078" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00036 Aluminum 5/8" 0.641" 1.073" 0.156" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00031 Aluminum No. 10 0.2" 0.334" 0.047" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00029 Aluminum No. 6 0.148" 0.25" 0.031" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00030 Aluminum No. 8 0.174" 0.293" 0.040" Split Lock Rockwell B87 ASME B18.21.1 -
1307FA00164 Black-Oxide 18-8 Stainless Steel 1/2" 0.512" 0.869" 0.125" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00161 Black-Oxide 18-8 Stainless Steel 1/4" 0.26" 0.487" 0.062" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00163 Black-Oxide 18-8 Stainless Steel 3/8" 0.385" 0.68" 0.094" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00162 Black-Oxide 18-8 Stainless Steel 5/16" 0.322" 0.583" 0.078" Split Lock Rockwell C35 ASME B18.21.1 -
1308FA00085 Black-Oxide 18-8 Stainless Steel M10 10.7 mm 18.1 mm 2.0-2.4 mm Split Lock Not Rated DIN 127B -
1308FA00086 Black-Oxide 18-8 Stainless Steel M12 12.7 mm 21.1 mm 2.3-2.7 mm Split Lock Not Rated DIN 127B -
1308FA00087 Black-Oxide 18-8 Stainless Steel M16 17 mm 27.4 mm 3.3-3.7 mm Split Lock Not Rated DIN 127B -
1308FA00079 Black-Oxide 18-8 Stainless Steel M2 2.4 mm 4.4 mm 0.4-0.6 mm Split Lock Not Rated DIN 127B -
1308FA00080 Black-Oxide 18-8 Stainless Steel M2.5 2.9 mm 5.1 mm 0.5-0.7 mm Split Lock Not Rated DIN 127B -
1308FA00088 Black-Oxide 18-8 Stainless Steel M20 21.2 mm 33.6 mm 3.8-4.2 mm Split Lock Not Rated DIN 127B -
1308FA00081 Black-Oxide 18-8 Stainless Steel M3 3.4 mm 6.2 mm 0.7-0.9 mm Split Lock Not Rated DIN 127B -
1308FA00082 Black-Oxide 18-8 Stainless Steel M5 5.4 mm 9.2 mm 1.1-1.3 mm Split Lock Not Rated DIN 127B -
1308FA00083 Black-Oxide 18-8 Stainless Steel M6 6.5 mm 11.8 mm 1.5-1.7 mm Split Lock Not Rated DIN 127B -
1308FA00084 Black-Oxide 18-8 Stainless Steel M8 8.5 mm 14.8 mm 1.9-2.1 mm Split Lock Not Rated DIN 127B -
1307FA00160 Black-Oxide 18-8 Stainless Steel No. 10 0.2" 0.334" 0.047" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00156 Black-Oxide 18-8 Stainless Steel No. 2 0.094" 0.172" 0.020" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00157 Black-Oxide 18-8 Stainless Steel No. 4 0.12" 0.209" 0.025" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00158 Black-Oxide 18-8 Stainless Steel No. 6 0.148" 0.25" 0.031" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00159 Black-Oxide 18-8 Stainless Steel No. 8 0.174" 0.293" 0.040" Split Lock Rockwell C35 ASME B18.21.1 -
1307FA00014 Black-Oxide Steel 1 1/2" 1.534" 2.419" 0.375" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00012 Black-Oxide Steel 1 1/4" 1.28" 2.036" 0.312" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00011 Black-Oxide Steel 1 1/8" 1.153" 1.847" 0.281" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00015 Black-Oxide Steel 1 3/4" 1.789" 2.679" 0.389" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00013 Black-Oxide Steel 1 3/8" 1.408" 2.219" 0.344" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00010 Black-Oxide Steel 1" 1.024" 1.656" 0.25" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00005 Black-Oxide Steel 1/2" 0.512" 0.869" 0.125" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00001 Black-Oxide Steel 1/4" 0.26" 0.487" 0.062" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00016 Black-Oxide Steel 2" 2.039" 2.936" 0.422" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00008 Black-Oxide Steel 3/4" 0.766" 1.265" 0.188" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00003 Black-Oxide Steel 3/8" 0.385" 0.68" 0.094" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00002 Black-Oxide Steel 5/16" 0.322" 0.583" 0.078" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00007 Black-Oxide Steel 5/8" 0.641" 1.073" 0.156" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00004 Black-Oxide Steel 7/16" 0.45" 0.776" 0.109" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00009 Black-Oxide Steel 7/8" 0.894" 1.459" 0.219" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00006 Black-Oxide Steel 9/16" 0.574" 0.965" 0.141" Split Lock Rockwell C38 ASME B18.21.1 -
1308FA00150 Black-Oxide Steel M10 10.2 mm 18.1 mm 1.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00211 Black-Oxide Steel M10 10.7 mm 18.1 mm 2.0-2.4 mm Split Lock Rockwell C44 DIN 127B -
1308FA00151 Black-Oxide Steel M12 12.2 mm 21.1 mm 2.0 mm Split Lock Rockwell C44 DIN 128A -
1308FA00152 Black-Oxide Steel M16 16.2 mm 27.4 mm 2.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00212 Black-Oxide Steel M16 17 mm 27.4 mm 3.3-3.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00153 Black-Oxide Steel M20 20.2 mm 33.6 mm 3.0 mm Split Lock Rockwell C44 DIN 128A -
1308FA00154 Black-Oxide Steel M24 24.5 mm 40 mm 3.8 mm Split Lock Rockwell C44 DIN 128A -
1308FA00145 Black-Oxide Steel M3 3.1 mm 6.2 mm 0.6 mm Split Lock Rockwell C44 DIN 128A -
1308FA00146 Black-Oxide Steel M4 4.1 mm 7.6 mm 0.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00147 Black-Oxide Steel M5 5.1 mm 9.2 mm 0.9 mm Split Lock Rockwell C44 DIN 128A -
1308FA00148 Black-Oxide Steel M6 6.1 mm 11.8 mm 1.2 mm Split Lock Rockwell C44 DIN 128A -
1308FA00209 Black-Oxide Steel M6 6.5 mm 11.8 mm 1.5-1.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00149 Black-Oxide Steel M8 8.1 mm 14.8 mm 1.5 mm Split Lock Rockwell C44 DIN 128A -
1308FA00210 Black-Oxide Steel M8 8.5 mm 14.8 mm 1.9-2.1 mm Split Lock Rockwell C44 DIN 127B -
1308FA00116 Blue Dyed Steel M10 10.2 mm 18 mm 2.9 mm Split Lock Rockwell C38 ASME B18.21.2M -
1308FA00111 Blue Dyed Steel M10 10.7 mm 18.1 mm 2.0-2.4 mm Split Lock Rockwell C44 DIN 127B -
1308FA00117 Blue Dyed Steel M12 12.3 mm 21.7 mm 3.8 mm Split Lock Rockwell C38 ASME B18.21.2M -
1308FA00112 Blue Dyed Steel M12 12.7 mm 21.1 mm 2.3-2.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00118 Blue Dyed Steel M16 16.4 mm 27.9 mm 4.8 mm Split Lock Rockwell C38 ASME B18.21.2M -
1308FA00113 Blue Dyed Steel M16 17 mm 27.4 mm 3.3-3.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00119 Blue Dyed Steel M20 20.5 mm 33.8 mm 5.7 mm Split Lock Rockwell C38 ASME B18.21.2M -
1308FA00114 Blue Dyed Steel M20 21.2 mm 33.6 mm 3.8-4.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00120 Blue Dyed Steel M24 24.5 mm 40.7 mm 7.2 mm Split Lock Rockwell C38 ASME B18.21.2M -
1308FA00108 Blue Dyed Steel M3 3.4 mm 6.2 mm 0.7-0.9 mm Split Lock Not Rated DIN 127B -
1308FA00109 Blue Dyed Steel M4 4.5 mm 7.6 mm 0.8-1.0 mm Split Lock Not Rated DIN 127B -
1308FA00110 Blue Dyed Steel M5 5.4 mm 9.2 mm 1.1-1.3 mm Split Lock Not Rated DIN 127B -
1308FA00105 Blue Dyed Steel M6 6.2 mm 12.1 mm 2.0 mm Split Lock Rockwell C38 ASME B18.21.2M -
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