Locknuts

1344 products

Locknuts

Locknuts are specialized fasteners designed to resist loosening under vibration, torque, and other dynamic forces. At Skdin, we offer high-quality Locknuts in various designs including nylon insert, all-metal, and prevailing torque types for applications where secure, vibration-resistant fastening is critical. Our locknuts feature innovative designs that create friction or mechanical interference to prevent unintentional loosening, ensuring reliable performance in demanding environments. Available in various materials, sizes, and configurations, our locknuts are ideal for automotive, aerospace, industrial machinery, and other applications where vibration is a concern. Explore our selection to find the perfect locknuts for your vibration-resistant fastening needs.

System of Measurement
Inch Metric
Thread Size
1 1/2"-12 1 1/2"-6 1 1/2"-8 1 1/4"-12 1 1/4"-7 1 1/4"-8 1 1/8"-12 1 1/8"-7 1 3/4"-12 1 3/4"-5 1 3/4"-8 1 3/8"-12 1 3/8"-8 1"-12 1"-14 1"-8 1/2"-13 1/2"-20 1/4"-20 1/4"-28 10-24 10-32 12-24 12-28 2 1/2"-12 2 1/4"-12 2 1/4"-8 2 3/4"-12 2"-12 2"-4 1/2 2"-8 2-56 3"-12 3-48 3/4"-10 3/4"-16 3/8"-16 3/8"-24 4-40 5-40 5/16"-18 5/16"-24 5/8"-11 5/8"-18 6-32 6-40 7/16"-14 7/16"-20 7/8"-14 7/8"-9 8-32 8-36 9/16"-12 9/16"-18 M10 M12 M14 M16 M18 M2 M2.5 M20 M22 M24 M27 M3 M30 M33 M36 M39 M4 M42 M45 M48 M5 M56 M6 M7 M8
Material
18-8 Stainless Steel 316 Stainless Steel 6061 Aluminum Black Corrosion-Resistant-Coated Steel Black Zinc Plated Steel Black-Oxide 18-8 Stainless Steel Black-Oxide Steel Black-Phosphate Steel Brass Cadmium Yellow-Chromate Plated Steel Cadmium-Plated Steel Grade 5 Titanium Silver-Plated 18-8 Stainless Steel Steel Zinc Yellow-Chromate Plated Steel Zinc-Flake-Coated Steel Zinc-Plated Steel
Nut Type
Locknut, Hex Locknut; Hex
Width
1/4" 5/16" 11/32" 3/8" 7/16" 1/2" 9/16" 5/8" 11/16" 3/4" 13/16" 7/8" 15/16" 1" 1 1/16" 1 1/8" 1 1/4" 1 5/16" 1 7/16" 1 1/2" 1 5/8" 1 11/16" 1 13/16" 1 7/8" 1 15/16" 2" 2 1/64" 2 3/16" 2 13/64" 2 1/4" 2 3/8" 2 25/64" 2 5/8" 2 3/4" 2 49/64" 3" 3 1/8" 3 9/64" 3 1/2" 3 33/64" 4" 4 1/2" 4 mm 5 mm 5.5 mm 7 mm 8 mm 10 mm 11 mm 12 mm 13 mm 14 mm 17 mm 19 mm 22 mm 24 mm 27 mm 30 mm 32 mm 33 mm 36 mm 41 mm 46 mm 50 mm 55 mm 60 mm 65 mm 70 mm 75 mm 85 mm
Height
3/32" 7/64" 1/8" 9/64" 5/32" 11/64" 3/16" 7/32" 15/64" 1/4" 17/64" 9/32" 19/64" 5/16" 21/64" 11/32" 23/64" 3/8" 25/64" 13/32" 27/64" 7/16" 29/64" 15/32" 31/64" 1/2" 33/64" 17/32" 35/64" 9/16" 37/64" 19/32" 39/64" 5/8" 41/64" 21/32" 11/16" 45/64" 23/32" 47/64" 3/4" 49/64" 25/32" 13/16" 27/32" 55/64" 7/8" 57/64" 29/32" 59/64" 15/16" 63/64" 1" 1 1/64" 1 1/32" 1 3/64" 1 1/16" 1 3/32" 1 7/64" 1 1/8" 1 9/64" 1 11/64" 1 3/16" 1 13/64" 1 1/4" 1 17/64" 1 9/32" 1 5/16" 1 25/64" 1 13/32" 1 15/32" 1 1/2" 1 39/64" 1 41/64" 1 43/64" 1 11/16" 1 23/32" 1 51/64" 1 59/64" 1 15/16" 2 1/32" 2 3/16" 2 5/16" 2 13/32" 2 41/64" 2 13/16" 2.8 mm 3 mm 3.2 mm 3.3 mm 3.5 mm 3.7 mm 3.8 mm 4 mm 4.1 mm 4.2 mm 4.5 mm 4.6 mm 4.8 mm 5 mm 5.1 mm 5.2 mm 5.3 mm 5.5 mm 6 mm 6.2 mm 6.3 mm 6.4 mm 6.5 mm 6.6 mm 7.2 mm 7.3 mm 7.5 mm 7.8 mm 8 mm 8.5 mm 8.8 mm 9.2 mm 9.5 mm 9.7 mm 10 mm 10.4 mm 10.7 mm 11 mm 11.5 mm 11.7 mm 12 mm 13 mm 13.8 mm 14 mm 14.6 mm 15 mm 15.6 mm 16 mm 18 mm 18.2 mm 18.5 mm 19 mm 20 mm 20.8 mm 21 mm 21.5 mm 22 mm 23.4 mm 24 mm 24.4 mm 25 mm 26 mm 27 mm 28 mm 28.6 mm 30 mm 31.2 mm 33 mm 36 mm 38 mm 39 mm 42 mm 45 mm 46 mm 48 mm 50 mm 57 mm
Thread Type
Metric UN UNC UNEF UNF UNS
Thread Direction
Left Hand Right Hand
Thread Pitch
0.4 mm 0.45 mm 0.5 mm 0.7 mm 0.8 mm 1 mm 1.25 mm 1.5 mm 1.75 mm 2 mm 2.5 mm 3 mm 3.5 mm 4 mm 4.5 mm 5 mm 5.5 mm
Washer Type
External-Tooth Lock Spring Lock
Washer OD
0.281" 0.328" 0.344" 0.375" 0.406" 0.5" 0.578" 0.592" 0.656" 0.871" 0.891" 6.5 mm 7.1 mm 8 mm 8.2 mm 8.5 mm 9.5 mm 10 mm 11.5 mm 12 mm 14 mm 15.1 mm 15.5 mm 18 mm 19.2 mm 20.1 mm 22 mm 25.5 mm
Washer Material
18-8 Stainless Steel 400 Stainless Steel Black-Oxide 400 Stainless Steel Steel
Strength Class
ASTM Grade C Class 10 Class 6 Class 8 Grade 2 Grade 5 Grade 8 Grade 9
Show more▼
Part Number Thread Size Thread Type Thread Fit Thread Direction Width Drive Style Material Height Locking Type Nut Type
1140FA00012 M30 Metric Class 6H Right Hand 46 mm External Hex Zinc-Plated Steel 30 mm Nylon Insert Locknut, Hex
1139FA00021 M30 Metric Class 6H Right Hand 46 mm External Hex Zinc-Plated Steel 30 mm Nylon Insert Locknut, Hex
1192FA00004 M30 Metric Class 6H Right Hand 46 mm External Hex Zinc-Plated Steel 33 mm Cotter Pin Locknut, Hex
1142FA00017 M33 Metric Class 6H Right Hand 50 mm External Hex Zinc-Plated Steel 33 mm Nylon Insert Locknut, Hex
1143FA00018 M33 Metric Class 6H Right Hand 50 mm External Hex Zinc-Plated Steel 33 mm Nylon Insert Locknut, Hex
1139FA00022 M33 Metric Class 6H Right Hand 50 mm External Hex Zinc-Plated Steel 33 mm Nylon Insert Locknut, Hex
1192FA00011 M36 Metric Class 6H Right Hand 55 mm External Hex Steel 38 mm Cotter Pin Locknut, Hex
1192FA00022 M36 Metric Class 6H Right Hand 55 mm External Hex Steel 38 mm Cotter Pin Locknut, Hex
1168FA00015 M36 Metric Class 6H Right Hand 55 mm External Hex Zinc Yellow-Chromate Plated Steel 36 mm Distorted Thread Locknut, Hex
1142FA00018 M36 Metric Class 6H Right Hand 55 mm External Hex Zinc-Plated Steel 36 mm Nylon Insert Locknut, Hex
1143FA00019 M36 Metric Class 6H Right Hand 55 mm External Hex Zinc-Plated Steel 36 mm Nylon Insert Locknut, Hex
1140FA00013 M36 Metric Class 6H Right Hand 55 mm External Hex Zinc-Plated Steel 36 mm Nylon Insert Locknut, Hex
1139FA00023 M36 Metric Class 6H Right Hand 55 mm External Hex Zinc-Plated Steel 36 mm Nylon Insert Locknut, Hex
1143FA00020 M39 Metric Class 6H Right Hand 60 mm External Hex Zinc-Plated Steel 39 mm Nylon Insert Locknut, Hex
1139FA00024 M39 Metric Class 6H Right Hand 60 mm External Hex Zinc-Plated Steel 39 mm Nylon Insert Locknut, Hex
1172FA00005 M4 Metric Class 6H Right Hand 7 mm External Hex 18-8 Stainless Steel 3.2 mm Distorted Thread Locknut, Hex
1164FA00002 M4 Metric Class 6H Right Hand 7 mm External Hex 18-8 Stainless Steel 4.1 mm Lock Washer Locknut, Hex
1147FA00016 M4 Metric Class 6H Right Hand 7 mm External Hex 18-8 Stainless Steel 5 mm Nylon Insert Locknut, Hex
1147FA00005 M4 Metric Class 6H Right Hand 7 mm External Hex 18-8 Stainless Steel 5.3 mm Nylon Insert Locknut, Hex
1184FA00006 M4 Metric Class 6H Right Hand 7 mm External Hex 18-8 Stainless Steel 6 mm Flex-Top Locknut, Hex
1150FA00013 M4 Metric Class 6H Right Hand 7 mm External Hex 316 Stainless Steel 5 mm Nylon Insert Locknut; Hex
1150FA00003 M4 Metric Class 6H Right Hand 7 mm External Hex 316 Stainless Steel 5.3 mm Nylon Insert Locknut; Hex
1184FA00015 M4 Metric Class 6H Right Hand 7 mm External Hex 316 Stainless Steel 6 mm Flex-Top Locknut, Hex
1139FA00001 M4 Metric Class 6H Right Hand 7 mm External Hex Black Corrosion-Resistant-Coated Steel 5 mm Nylon Insert Locknut, Hex
1142FA00043 M4 Metric Class 6H Right Hand 7 mm External Hex Black Corrosion-Resistant-Coated Steel 5 mm Nylon Insert Locknut, Hex
1162FA00008 M4 Metric Class 6H Right Hand 7 mm External Hex Black Zinc Plated Steel 4.1 mm Lock Washer Locknut, Hex
1164FA00006 M4 Metric Class 6H Right Hand 7 mm External Hex Black-Oxide 18-8 Stainless Steel 4.1 mm Lock Washer Locknut, Hex
1165FA00003 M4 Metric Class 6H Right Hand 7 mm External Hex Black-Oxide Steel 4.2 mm Lock Washer Locknut, Hex
1142FA00023 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc Yellow-Chromate Plated Steel 5 mm Nylon Insert Locknut, Hex
1162FA00002 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc-Plated Steel 4.1 mm Lock Washer Locknut, Hex
1168FA00002 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc-Plated Steel 4.2 mm Distorted Thread Locknut, Hex
1165FA00006 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc-Plated Steel 4.2 mm Lock Washer Locknut, Hex
1142FA00002 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc-Plated Steel 5 mm Nylon Insert Locknut, Hex
1144FA00008 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc-Plated Steel 5 mm Nylon Insert Locknut, Hex
1139FA00008 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc-Plated Steel 5 mm Nylon Insert Locknut, Hex
1142FA00050 M4 Metric Class 6H Right Hand 7 mm External Hex Zinc-Plated Steel 5.3 mm Nylon Insert Locknut, Hex
1192FA00012 M42 Metric Class 6H Right Hand 65 mm External Hex Steel 46 mm Cotter Pin Locknut, Hex
1143FA00021 M42 Metric Class 6H Right Hand 65 mm External Hex Zinc-Plated Steel 42 mm Nylon Insert Locknut, Hex
1139FA00025 M42 Metric Class 6H Right Hand 65 mm External Hex Zinc-Plated Steel 42 mm Nylon Insert Locknut, Hex
1143FA00022 M45 Metric Class 6H Right Hand 70 mm External Hex Zinc-Plated Steel 45 mm Nylon Insert Locknut, Hex
1192FA00013 M48 Metric Class 6H Right Hand 75 mm External Hex Steel 50 mm Cotter Pin Locknut, Hex
1142FA00019 M48 Metric Class 6H Right Hand 75 mm External Hex Zinc-Plated Steel 48 mm Nylon Insert Locknut, Hex
1143FA00023 M48 Metric Class 6H Right Hand 75 mm External Hex Zinc-Plated Steel 48 mm Nylon Insert Locknut, Hex
1172FA00006 M5 Metric Class 6H Right Hand 8 mm External Hex 18-8 Stainless Steel 4 mm Distorted Thread Locknut, Hex
1147FA00020 M5 Metric Class 6H Right Hand 8 mm External Hex 18-8 Stainless Steel 5 mm Nylon Insert Locknut, Hex
1164FA00003 M5 Metric Class 6H Right Hand 8 mm External Hex 18-8 Stainless Steel 5.2 mm Lock Washer Locknut, Hex
1147FA00006 M5 Metric Class 6H Right Hand 8 mm External Hex 18-8 Stainless Steel 6.3 mm Nylon Insert Locknut, Hex
1184FA00007 M5 Metric Class 6H Right Hand 8 mm External Hex 18-8 Stainless Steel 7.5 mm Flex-Top Locknut, Hex
1150FA00014 M5 Metric Class 6H Right Hand 8 mm External Hex 316 Stainless Steel 5 mm Nylon Insert Locknut; Hex
1150FA00004 M5 Metric Class 6H Right Hand 8 mm External Hex 316 Stainless Steel 6.3 mm Nylon Insert Locknut; Hex
1184FA00016 M5 Metric Class 6H Right Hand 8 mm External Hex 316 Stainless Steel 7.5 mm Flex-Top Locknut, Hex
1139FA00002 M5 Metric Class 6H Right Hand 8 mm External Hex Black Corrosion-Resistant-Coated Steel 5 mm Nylon Insert Locknut, Hex
1142FA00044 M5 Metric Class 6H Right Hand 8 mm External Hex Black Corrosion-Resistant-Coated Steel 5 mm Nylon Insert Locknut, Hex
1162FA00009 M5 Metric Class 6H Right Hand 8 mm External Hex Black Zinc Plated Steel 5.2 mm Lock Washer Locknut, Hex
1164FA00007 M5 Metric Class 6H Right Hand 8 mm External Hex Black-Oxide 18-8 Stainless Steel 5.2 mm Lock Washer Locknut, Hex
1165FA00004 M5 Metric Class 6H Right Hand 8 mm External Hex Black-Oxide Steel 5.3 mm Lock Washer Locknut, Hex
1167FA00099 M5 Metric Class 6H Right Hand 8 mm External Hex Black-Phosphate Steel 5.1 mm Distorted Thread Locknut; Hex
1142FA00024 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc Yellow-Chromate Plated Steel 5 mm Nylon Insert Locknut, Hex
1142FA00035 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc Yellow-Chromate Plated Steel 6.3 mm Nylon Insert Locknut, Hex
1176FA00001 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 4 mm Distorted Thread Locknut, Hex
1142FA00003 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 5 mm Nylon Insert Locknut, Hex
1144FA00009 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 5 mm Nylon Insert Locknut, Hex
1139FA00009 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 5 mm Nylon Insert Locknut, Hex
1168FA00003 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 5.1 mm Distorted Thread Locknut, Hex
1167FA00065 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 5.1 mm Distorted Thread Locknut; Hex
1162FA00003 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 5.2 mm Lock Washer Locknut, Hex
1165FA00007 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 5.3 mm Lock Washer Locknut, Hex
1142FA00051 M5 Metric Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 6.3 mm Nylon Insert Locknut, Hex
1201FA00001 M5 - Class 6H Right Hand 8 mm External Hex 18-8 Stainless Steel 4.8 mm Spring-Stop Locknut, Hex
1200FA00001 M5 - Class 6H Right Hand 8 mm External Hex Zinc-Plated Steel 4.6 mm Spring-Stop Locknut, Hex
1192FA00014 M56 Metric Class 6H Right Hand 85 mm External Hex Steel 57 mm Cotter Pin Locknut, Hex
1172FA00007 M6 Metric Class 6H Right Hand 10 mm External Hex 18-8 Stainless Steel 6 mm Distorted Thread Locknut, Hex
1147FA00021 M6 Metric Class 6H Right Hand 10 mm External Hex 18-8 Stainless Steel 6 mm Nylon Insert Locknut, Hex
1164FA00004 M6 Metric Class 6H Right Hand 10 mm External Hex 18-8 Stainless Steel 6.2 mm Lock Washer Locknut, Hex
1184FA00001 M6 Metric Class 6H Right Hand 10 mm External Hex 18-8 Stainless Steel 7.8 mm Flex-Top Locknut, Hex
1147FA00007 M6 Metric Class 6H Right Hand 10 mm External Hex 18-8 Stainless Steel 8 mm Nylon Insert Locknut, Hex
1150FA00015 M6 Metric Class 6H Right Hand 10 mm External Hex 316 Stainless Steel 6 mm Nylon Insert Locknut; Hex
1184FA00017 M6 Metric Class 6H Right Hand 10 mm External Hex 316 Stainless Steel 7.8 mm Flex-Top Locknut, Hex
1150FA00005 M6 Metric Class 6H Right Hand 10 mm External Hex 316 Stainless Steel 8 mm Nylon Insert Locknut; Hex
1139FA00003 M6 Metric Class 6H Right Hand 10 mm External Hex Black Corrosion-Resistant-Coated Steel 6 mm Nylon Insert Locknut, Hex
1142FA00045 M6 Metric Class 6H Right Hand 10 mm External Hex Black Corrosion-Resistant-Coated Steel 6 mm Nylon Insert Locknut, Hex
1162FA00010 M6 Metric Class 6H Right Hand 10 mm External Hex Black Zinc Plated Steel 6.2 mm Lock Washer Locknut, Hex
1164FA00008 M6 Metric Class 6H Right Hand 10 mm External Hex Black-Oxide 18-8 Stainless Steel 6.2 mm Lock Washer Locknut, Hex
1165FA00005 M6 Metric Class 6H Right Hand 10 mm External Hex Black-Oxide Steel 6.6 mm Lock Washer Locknut, Hex
1181FA00004 M6 Metric Class 6H Right Hand 10 mm External Hex Black-Oxide Steel 7.8 mm Flex-Top Locknut, Hex
1167FA00100 M6 Metric Class 6H Right Hand 10 mm External Hex Black-Phosphate Steel 6 mm Distorted Thread Locknut; Hex
1181FA00001 M6 Metric Class 6H Right Hand 10 mm External Hex Cadmium-Plated Steel 7.8 mm Flex-Top Locknut, Hex
1167FA00078 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc Yellow-Chromate Plated Steel 6 mm Distorted Thread Locknut; Hex
1142FA00025 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc Yellow-Chromate Plated Steel 6 mm Nylon Insert Locknut, Hex
1142FA00036 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc Yellow-Chromate Plated Steel 8 mm Nylon Insert Locknut, Hex
1176FA00002 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 5 mm Distorted Thread Locknut, Hex
1168FA00004 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 6 mm Distorted Thread Locknut, Hex
1167FA00066 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 6 mm Distorted Thread Locknut; Hex
1142FA00004 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 6 mm Nylon Insert Locknut, Hex
1144FA00010 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 6 mm Nylon Insert Locknut, Hex
1139FA00010 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 6 mm Nylon Insert Locknut, Hex
1162FA00004 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 6.2 mm Lock Washer Locknut, Hex
1165FA00008 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 6.6 mm Lock Washer Locknut, Hex
1192FA00023 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 7.5 mm Cotter Pin Locknut, Hex
1142FA00052 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 8 mm Nylon Insert Locknut, Hex
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