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
1169FA00002 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Black-Oxide Steel 19/64" Distorted Thread Locknut, Hex
1138FA00078 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Black-Oxide Steel 11/32" Nylon Insert Locknut, Hex
1152FA00006 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Brass 11/32" Nylon Insert Locknut, Hex
1167FA00002 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Cadmium-Plated Steel 17/64" Distorted Thread Locknut; Hex
1186FA00034 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Cadmium-Plated Steel 17/64" Flex-Top Locknut, Hex
1171FA00002 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Cadmium-Plated Steel 21/64" Distorted Thread Locknut, Hex
1153FA00007 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Grade 5 Titanium 11/32" Nylon Insert Locknut, Hex
1167FA00023 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Steel 17/64" Distorted Thread Locknut; Hex
1186FA00011 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Steel 17/64" Flex-Top Locknut, Hex
1138FA00005 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Steel 11/32" Nylon Insert Locknut, Hex
1174FA00003 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc Yellow-Chromate Plated Steel 17/64" Distorted Thread Locknut, Hex
1167FA00122 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc Yellow-Chromate Plated Steel 17/64" Distorted Thread Locknut; Hex
1138FA00047 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc Yellow-Chromate Plated Steel 11/32" Nylon Insert Locknut, Hex
1174FA00028 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Flake-Coated Steel 17/64" Distorted Thread Locknut, Hex
1167FA00160 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Flake-Coated Steel 17/64" Distorted Thread Locknut; Hex
1193FA00003 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Cotter Pin Locknut, Hex
1191FA00002 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Cotter Pin Locknut; Hex
1177FA00002 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Distorted Thread Locknut, Hex
1170FA00006 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Distorted Thread Locknut, Hex
1167FA00041 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Distorted Thread Locknut; Hex
1136FA00005 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Serrations Locknut, Hex
1169FA00030 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 19/64" Distorted Thread Locknut, Hex
1161FA00014 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 21/64" Lock Washer Locknut, Hex
1144FA00025 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 11/32" Nylon Insert Locknut, Hex
1141FA00006 5/16"-18 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 11/32" Nylon Insert Locknut; Hex
1189FA00002 5/16"-18 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 21/64" Flex-Top Locknut, Hex
1158FA00002 5/16"-18 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 7/16" Nylon Insert Locknut, Hex
1155FA00010 5/16"-18 UNC Class 2B Right Hand 9/16" External Hex Black Corrosion-Resistant-Coated Steel 5/16" Nylon Insert Locknut, Hex
1190FA00005 5/16"-18 UNC Class 2B Right Hand 9/16" External Hex Cadmium-Plated Steel 17/64" Flex-Top Locknut, Hex
1188FA00005 5/16"-18 UNC Class 2B Right Hand 9/16" External Hex Cadmium-Plated Steel 21/64" Flex-Top Locknut, Hex
1155FA00002 5/16"-18 UNC Class 2B Right Hand 9/16" External Hex Zinc-Plated Steel 5/16" Nylon Insert Locknut, Hex
1160FA00002 5/16"-18 UNC Class 2B Right Hand 9/16" External Hex Zinc-Plated Steel 7/16" Nylon Insert Locknut, Hex
1148FA00009 5/16"-18 UNC Class 3B Right Hand 1/2" External Hex 18-8 Stainless Steel 11/32" Nylon Insert Locknut, Hex
1156FA00004 5/16"-18 UNC Class 3B Right Hand 9/16" External Hex 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1172FA00020 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 17/64" Distorted Thread Locknut, Hex
1178FA00004 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 17/64" Distorted Thread Locknut, Hex
1187FA00008 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 17/64" Flex-Top Locknut, Hex
1194FA00013 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 21/64" Cotter Pin Locknut, Hex
1163FA00012 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 21/64" Lock Washer Locknut, Hex
1146FA00022 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 11/32" Nylon Insert Locknut, Hex
1183FA00007 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 23/64" Flex-Top Locknut, Hex
1149FA00018 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex 316 Stainless Steel 11/32" Nylon Insert Locknut, Hex
1146FA00053 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Black-Oxide 18-8 Stainless Steel 11/32" Nylon Insert Locknut, Hex
1167FA00151 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Black-Oxide Steel 17/64" Distorted Thread Locknut; Hex
1169FA00011 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Black-Oxide Steel 19/64" Distorted Thread Locknut, Hex
1138FA00079 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Black-Oxide Steel 11/32" Nylon Insert Locknut, Hex
1167FA00007 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Cadmium-Plated Steel 17/64" Distorted Thread Locknut; Hex
1186FA00035 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Cadmium-Plated Steel 17/64" Flex-Top Locknut, Hex
1193FA00030 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Steel 17/64" Cotter Pin Locknut, Hex
1167FA00024 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Steel 17/64" Distorted Thread Locknut; Hex
1186FA00012 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Steel 17/64" Flex-Top Locknut, Hex
1138FA00013 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Steel 11/32" Nylon Insert Locknut, Hex
1137FA00002 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Steel 29/64" Two-Piece Clamp Locknut, Hex
1174FA00004 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc Yellow-Chromate Plated Steel 17/64" Distorted Thread Locknut, Hex
1167FA00132 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc Yellow-Chromate Plated Steel 17/64" Distorted Thread Locknut; Hex
1138FA00048 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc Yellow-Chromate Plated Steel 11/32" Nylon Insert Locknut, Hex
1193FA00004 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Cotter Pin Locknut, Hex
1177FA00006 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Distorted Thread Locknut, Hex
1170FA00009 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Distorted Thread Locknut, Hex
1167FA00042 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 17/64" Distorted Thread Locknut; Hex
1169FA00022 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 19/64" Distorted Thread Locknut, Hex
1161FA00018 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 5/16" Lock Washer Locknut, Hex
1144FA00032 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 11/32" Nylon Insert Locknut, Hex
1141FA00007 5/16"-24 UNF Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 11/32" Nylon Insert Locknut; Hex
1182FA00006 5/16"-24 UNF Class 3B Right Hand 1/2" External Hex Cadmium Yellow-Chromate Plated Steel 23/64" Flex-Top Locknut, Hex
1145FA00006 5/16"-24 UNF Class 3B Right Hand 1/2" External Hex Cadmium Yellow-Chromate Plated Steel 23/64" Nylon Insert Locknut, Hex
1175FA00005 5/8"-11 UNC Class 2B Left Hand 15/16" External Hex Zinc-Plated Steel 35/64" Distorted Thread Locknut, Hex
1172FA00027 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 35/64" Distorted Thread Locknut, Hex
1178FA00011 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 35/64" Distorted Thread Locknut, Hex
1194FA00005 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 23/32" Cotter Pin Locknut, Hex
1146FA00030 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 3/4" Nylon Insert Locknut, Hex
1179FA00005 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex 316 Stainless Steel 35/64" Distorted Thread Locknut, Hex
1149FA00024 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex 316 Stainless Steel 3/4" Nylon Insert Locknut, Hex
1146FA00058 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Black-Oxide 18-8 Stainless Steel 3/4" Nylon Insert Locknut, Hex
1174FA00023 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Black-Oxide Steel 35/64" Distorted Thread Locknut, Hex
1167FA00147 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Black-Oxide Steel 35/64" Distorted Thread Locknut; Hex
1169FA00005 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Black-Oxide Steel 5/8" Distorted Thread Locknut, Hex
1138FA00088 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Black-Oxide Steel 3/4" Nylon Insert Locknut, Hex
1152FA00009 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Brass 3/4" Nylon Insert Locknut, Hex
1186FA00041 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Cadmium-Plated Steel 13/32" Flex-Top Locknut, Hex
1167FA00004 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Cadmium-Plated Steel 35/64" Distorted Thread Locknut; Hex
1171FA00006 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Cadmium-Plated Steel 11/16" Distorted Thread Locknut, Hex
1186FA00017 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Steel 13/32" Flex-Top Locknut, Hex
1199FA00004 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Steel 15/32" Steel Insert Locknut, Hex
1167FA00033 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Steel 35/64" Distorted Thread Locknut; Hex
1195FA00002 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Steel 5/8" Steel Insert Locknut, Hex
1138FA00009 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Steel 3/4" Nylon Insert Locknut, Hex
1174FA00012 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc Yellow-Chromate Plated Steel 35/64" Distorted Thread Locknut, Hex
1167FA00127 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc Yellow-Chromate Plated Steel 35/64" Distorted Thread Locknut; Hex
1138FA00057 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc Yellow-Chromate Plated Steel 3/4" Nylon Insert Locknut, Hex
1174FA00031 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Flake-Coated Steel 35/64" Distorted Thread Locknut, Hex
1167FA00164 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Flake-Coated Steel 35/64" Distorted Thread Locknut; Hex
1193FA00013 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Cotter Pin Locknut, Hex
1191FA00006 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Cotter Pin Locknut; Hex
1177FA00011 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Distorted Thread Locknut, Hex
1167FA00051 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Distorted Thread Locknut; Hex
1169FA00033 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 5/8" Distorted Thread Locknut, Hex
1144FA00030 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 3/4" Nylon Insert Locknut, Hex
1141FA00014 5/8"-11 UNC Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 3/4" Nylon Insert Locknut; Hex
1190FA00009 5/8"-11 UNC Class 2B Right Hand 1" External Hex Cadmium-Plated Steel 13/32" Flex-Top Locknut, Hex
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