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
1307FA00041 Steel No. 8 0.174" 0.293" 0.040" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00111 Zinc Yellow-Chromate Plated Steel 1" 1.024" 1.656" 0.25" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00106 Zinc Yellow-Chromate Plated Steel 1/2" 0.512" 0.869" 0.125" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00102 Zinc Yellow-Chromate Plated Steel 1/4" 0.26" 0.487" 0.062" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00109 Zinc Yellow-Chromate Plated Steel 3/4" 0.766" 1.265" 0.188" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00104 Zinc Yellow-Chromate Plated Steel 3/8" 0.385" 0.68" 0.094" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00103 Zinc Yellow-Chromate Plated Steel 5/16" 0.322" 0.583" 0.078" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00108 Zinc Yellow-Chromate Plated Steel 5/8" 0.641" 1.073" 0.156" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00105 Zinc Yellow-Chromate Plated Steel 7/16" 0.45" 0.776" 0.109" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00110 Zinc Yellow-Chromate Plated Steel 7/8" 0.894" 1.459" 0.219" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1307FA00107 Zinc Yellow-Chromate Plated Steel 9/16" 0.574" 0.965" 0.141" Split Lock Rockwell C38 ASME B18.21.1 Grade 8
1308FA00127 Zinc Yellow-Chromate Plated Steel M10 10.2 mm 18.1 mm 1.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00137 Zinc Yellow-Chromate Plated Steel M10 10.7 mm 18.1 mm 2.0-2.4 mm Split Lock Rockwell C44 DIN 127B -
1308FA00128 Zinc Yellow-Chromate Plated Steel M12 12.2 mm 21.1 mm 2.0 mm Split Lock Rockwell C44 DIN 128A -
1308FA00138 Zinc Yellow-Chromate Plated Steel M12 12.7 mm 21.1 mm 2.3-2.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00129 Zinc Yellow-Chromate Plated Steel M14 14.2 mm 24.1 mm 2.3 mm Split Lock Rockwell C44 DIN 128A -
1308FA00139 Zinc Yellow-Chromate Plated Steel M14 14.7 mm 24.1 mm 2.8-3.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00130 Zinc Yellow-Chromate Plated Steel M16 16.2 mm 27.4 mm 2.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00140 Zinc Yellow-Chromate Plated Steel M16 17 mm 27.4 mm 3.3-3.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00141 Zinc Yellow-Chromate Plated Steel M18 19 mm 29.4 mm 3.3-3.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00131 Zinc Yellow-Chromate Plated Steel M20 20.2 mm 33.6 mm 3.0 mm Split Lock Rockwell C44 DIN 128A -
1308FA00142 Zinc Yellow-Chromate Plated Steel M20 21.2 mm 33.6 mm 3.8-4.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00143 Zinc Yellow-Chromate Plated Steel M24 25.5 mm 40 mm 4.8-5.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00121 Zinc Yellow-Chromate Plated Steel M3 3.1 mm 6.2 mm 0.6 mm Split Lock Rockwell C44 DIN 128A -
1308FA00132 Zinc Yellow-Chromate Plated Steel M3 3.4 mm 6.2 mm 0.7-0.9 mm Split Lock Rockwell C44 DIN 127B -
1308FA00122 Zinc Yellow-Chromate Plated Steel M3.5 3.6 mm 6.7 mm 0.6 mm Split Lock Rockwell C44 DIN 128A -
1308FA00144 Zinc Yellow-Chromate Plated Steel M30 31.7 mm 48.2 mm 5.8-6.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00123 Zinc Yellow-Chromate Plated Steel M4 4.1 mm 7.6 mm 0.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00133 Zinc Yellow-Chromate Plated Steel M4 4.5 mm 7.6 mm 0.8-1.0 mm Split Lock Rockwell C44 DIN 127B -
1308FA00124 Zinc Yellow-Chromate Plated Steel M5 5.1 mm 9.2 mm 0.9 mm Split Lock Rockwell C44 DIN 128A -
1308FA00134 Zinc Yellow-Chromate Plated Steel M5 5.4 mm 9.2 mm 1.1-1.3 mm Split Lock Rockwell C44 DIN 127B -
1308FA00125 Zinc Yellow-Chromate Plated Steel M6 6.1 mm 11.8 mm 1.2 mm Split Lock Rockwell C44 DIN 128A -
1308FA00135 Zinc Yellow-Chromate Plated Steel M6 6.5 mm 11.8 mm 1.5-1.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00126 Zinc Yellow-Chromate Plated Steel M8 8.1 mm 14.8 mm 1.5 mm Split Lock Rockwell C44 DIN 128A -
1308FA00136 Zinc Yellow-Chromate Plated Steel M8 8.5 mm 14.8 mm 1.9-2.1 mm Split Lock Rockwell C44 DIN 127B -
1307FA00027 Zinc-Flake Coated Steel 1 1/4" 1.28" 2.036" 0.312" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00026 Zinc-Flake Coated Steel 1" 1.024" 1.656" 0.25" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00021 Zinc-Flake Coated Steel 1/2" 0.512" 0.869" 0.125" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00017 Zinc-Flake Coated Steel 1/4" 0.26" 0.487" 0.062" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00024 Zinc-Flake Coated Steel 3/4" 0.766" 1.265" 0.188" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00019 Zinc-Flake Coated Steel 3/8" 0.385" 0.68" 0.094" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00018 Zinc-Flake Coated Steel 5/16" 0.322" 0.583" 0.078" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00023 Zinc-Flake Coated Steel 5/8" 0.641" 1.073" 0.156" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00020 Zinc-Flake Coated Steel 7/16" 0.45" 0.776" 0.109" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00025 Zinc-Flake Coated Steel 7/8" 0.894" 1.459" 0.219" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00022 Zinc-Flake Coated Steel 9/16" 0.574" 0.965" 0.141" Split Lock Rockwell C38 ASME B18.21.1 -
1308FA00003 Zinc-Flake Coated Steel M10 10.7 mm 18.1 mm 2.0-2.4 mm Split Lock Rockwell C44 DIN 127B -
1308FA00001 Zinc-Flake Coated Steel M6 6.5 mm 11.8 mm 1.5-1.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00002 Zinc-Flake Coated Steel M8 8.5 mm 14.8 mm 1.9-2.1 mm Split Lock Rockwell C44 DIN 127B -
1307FA00028 Zinc-Flake Coated Steel No. 10 0.2" 0.334" 0.047" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00085 Zinc-Plated Steel 1 1/2" 1.534" 2.419" 0.375" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00084 Zinc-Plated Steel 1 1/4" 1.28" 2.036" 0.312" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00083 Zinc-Plated Steel 1 1/8" 1.153" 1.847" 0.281" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00086 Zinc-Plated Steel 1 3/4" 1.789" 2.679" 0.389" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00088 Zinc-Plated Steel 1 3/8" 1.408" 2.219" 0.344" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00082 Zinc-Plated Steel 1" 1.024" 1.656" 0.25" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00077 Zinc-Plated Steel 1/2" 0.512" 0.869" 0.125" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00101 Zinc-Plated Steel 1/2" 0.512" 0.869" 0.125" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00073 Zinc-Plated Steel 1/4" 0.26" 0.487" 0.062" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00097 Zinc-Plated Steel 1/4" 0.26" 0.487" 0.062" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00087 Zinc-Plated Steel 2" 2.039" 2.936" 0.422" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00080 Zinc-Plated Steel 3/4" 0.766" 1.265" 0.188" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00075 Zinc-Plated Steel 3/8" 0.385" 0.68" 0.094" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00099 Zinc-Plated Steel 3/8" 0.385" 0.68" 0.094" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00074 Zinc-Plated Steel 5/16" 0.322" 0.583" 0.078" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00098 Zinc-Plated Steel 5/16" 0.322" 0.583" 0.078" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00079 Zinc-Plated Steel 5/8" 0.641" 1.073" 0.156" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00076 Zinc-Plated Steel 7/16" 0.45" 0.776" 0.109" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00100 Zinc-Plated Steel 7/16" 0.45" 0.776" 0.109" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00081 Zinc-Plated Steel 7/8" 0.894" 1.459" 0.219" Split Lock Rockwell C38 ASME B18.21.1 -
1307FA00078 Zinc-Plated Steel 9/16" 0.574" 0.965" 0.141" Split Lock Rockwell C38 ASME B18.21.1 -
1308FA00161 Zinc-Plated Steel M10 10.2 mm 18.1 mm 1.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00189 Zinc-Plated Steel M10 10.2 mm 18.1 mm 1.7 mm Split Lock Rockwell C44 DIN 128B -
1308FA00050 Zinc-Plated Steel M10 10.7 mm 18.1 mm 2.0-2.4 mm Split Lock Rockwell C44 DIN 127B -
1308FA00162 Zinc-Plated Steel M12 12.2 mm 21.1 mm 2.0 mm Split Lock Rockwell C44 DIN 128A -
1308FA00190 Zinc-Plated Steel M12 12.2 mm 21.1 mm 2.0 mm Split Lock Rockwell C44 DIN 128B -
1308FA00051 Zinc-Plated Steel M12 12.7 mm 21.1 mm 2.3-2.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00163 Zinc-Plated Steel M14 14.2 mm 24.1 mm 2.3 mm Split Lock Rockwell C44 DIN 128A -
1308FA00191 Zinc-Plated Steel M14 14.2 mm 24.1 mm 3.9 mm Split Lock Rockwell C44 DIN 128B -
1308FA00052 Zinc-Plated Steel M14 14.7 mm 24.1 mm 2.8-3.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00164 Zinc-Plated Steel M16 16.2 mm 27.4 mm 2.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00192 Zinc-Plated Steel M16 16.2 mm 27.4 mm 2.7 mm Split Lock Rockwell C44 DIN 128B -
1308FA00053 Zinc-Plated Steel M16 17 mm 27.4 mm 3.3-3.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00165 Zinc-Plated Steel M18 18.2 mm 29.4 mm 2.7 mm Split Lock Rockwell C44 DIN 128A -
1308FA00193 Zinc-Plated Steel M18 18.2 mm 29.4 mm 2.7 mm Split Lock Rockwell C44 DIN 128B -
1308FA00036 Zinc-Plated Steel M18 19 mm 29.4 mm 3.3-3.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00042 Zinc-Plated Steel M2 2.4 mm 4.4 mm 0.4-0.6 mm Split Lock Rockwell C44 DIN 127B -
1308FA00155 Zinc-Plated Steel M2.5 2.6 mm 5.1 mm 0.5 mm Split Lock Rockwell C44 DIN 128A -
1308FA00043 Zinc-Plated Steel M2.5 2.9 mm 5.1 mm 0.5-0.7 mm Split Lock Rockwell C44 DIN 127B -
1308FA00166 Zinc-Plated Steel M20 20.2 mm 33.6 mm 3.0 mm Split Lock Rockwell C44 DIN 128A -
1308FA00054 Zinc-Plated Steel M20 21.2 mm 33.6 mm 3.8-4.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00167 Zinc-Plated Steel M22 22.5 mm 35.9 mm 3.0 mm Split Lock Rockwell C44 DIN 128A -
1308FA00194 Zinc-Plated Steel M22 22.5 mm 35.9 mm 3.0 mm Split Lock Rockwell C44 DIN 128B -
1308FA00037 Zinc-Plated Steel M22 22.5 mm 35.9 mm 3.8-4.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00168 Zinc-Plated Steel M24 24.5 mm 40 mm 3.8 mm Split Lock Rockwell C44 DIN 128A -
1308FA00195 Zinc-Plated Steel M24 24.5 mm 40 mm 3.8 mm Split Lock Rockwell C44 DIN 128B -
1308FA00055 Zinc-Plated Steel M24 25.5 mm 40 mm 4.8-5.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00038 Zinc-Plated Steel M27 28.5 mm 43 mm 4.8-5.2 mm Split Lock Rockwell C44 DIN 127B -
1308FA00156 Zinc-Plated Steel M3 3.1 mm 6.2 mm 0.6 mm Split Lock Rockwell C44 DIN 128A -
1308FA00184 Zinc-Plated Steel M3 3.1 mm 6.2 mm 0.6 mm Split Lock Rockwell C44 DIN 128B -
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