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
1174FA00026 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Black-Oxide Steel 55/64" Distorted Thread Locknut, Hex
1169FA00017 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Black-Oxide Steel 15/16" Distorted Thread Locknut, Hex
1167FA00020 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Cadmium-Plated Steel 55/64" Distorted Thread Locknut; Hex
1193FA00031 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Steel 55/64" Cotter Pin Locknut, Hex
1174FA00018 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Zinc Yellow-Chromate Plated Steel 55/64" Distorted Thread Locknut, Hex
1167FA00140 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Zinc Yellow-Chromate Plated Steel 55/64" Distorted Thread Locknut; Hex
1193FA00020 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 55/64" Cotter Pin Locknut, Hex
1177FA00015 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 55/64" Distorted Thread Locknut, Hex
1167FA00058 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 55/64" Distorted Thread Locknut; Hex
1169FA00028 1"-14 UNS Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 15/16" Distorted Thread Locknut, Hex
1146FA00013 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex 18-8 Stainless Steel 1 3/64" Nylon Insert Locknut, Hex
1149FA00011 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex 316 Stainless Steel 1 3/64" Nylon Insert Locknut, Hex
1138FA00094 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex Black-Oxide Steel 1 3/64" Nylon Insert Locknut, Hex
1186FA00001 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex Cadmium-Plated Steel 37/64" Flex-Top Locknut, Hex
1138FA00011 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex Steel 1 3/64" Nylon Insert Locknut, Hex
1138FA00038 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex Zinc Yellow-Chromate Plated Steel 1 3/64" Nylon Insert Locknut, Hex
1144FA00042 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex Zinc-Plated Steel 1 3/64" Nylon Insert Locknut, Hex
1141FA00020 1"-8 UNC Class 2B Right Hand 1 7/16" External Hex Zinc-Plated Steel 1 3/64" Nylon Insert Locknut; Hex
1172FA00031 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex 18-8 Stainless Steel 55/64" Distorted Thread Locknut, Hex
1178FA00016 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex 18-8 Stainless Steel 55/64" Distorted Thread Locknut, Hex
1194FA00008 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex 18-8 Stainless Steel 1" Cotter Pin Locknut, Hex
1174FA00025 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Black-Oxide Steel 55/64" Distorted Thread Locknut, Hex
1167FA00150 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Black-Oxide Steel 55/64" Distorted Thread Locknut; Hex
1169FA00009 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Black-Oxide Steel 15/16" Distorted Thread Locknut, Hex
1190FA00003 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Cadmium-Plated Steel 37/64" Flex-Top Locknut, Hex
1167FA00019 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Cadmium-Plated Steel 55/64" Distorted Thread Locknut; Hex
1188FA00003 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Cadmium-Plated Steel 1 1/64" Flex-Top Locknut, Hex
1199FA00007 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Steel 23/32" Steel Insert Locknut, Hex
1167FA00038 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Steel 55/64" Distorted Thread Locknut; Hex
1195FA00007 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Steel 1" Steel Insert Locknut, Hex
1174FA00017 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc Yellow-Chromate Plated Steel 55/64" Distorted Thread Locknut, Hex
1167FA00130 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc Yellow-Chromate Plated Steel 55/64" Distorted Thread Locknut; Hex
1174FA00032 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc-Flake-Coated Steel 55/64" Distorted Thread Locknut, Hex
1167FA00166 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc-Flake-Coated Steel 55/64" Distorted Thread Locknut; Hex
1193FA00019 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 55/64" Cotter Pin Locknut, Hex
1191FA00008 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 55/64" Cotter Pin Locknut; Hex
1167FA00057 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 55/64" Distorted Thread Locknut; Hex
1169FA00020 1"-8 UNC Class 2B Right Hand 1 1/2" External Hex Zinc-Plated Steel 15/16" Distorted Thread Locknut, Hex
1158FA00008 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex 18-8 Stainless Steel 1 5/16" Nylon Insert Locknut, Hex
1138FA00102 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Black-Oxide Steel 1 9/32" Nylon Insert Locknut, Hex
1198FA00005 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Steel 1 1/8" Steel Insert Locknut, Hex
1197FA00006 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Steel 1 11/64" Steel Insert Locknut, Hex
1138FA00026 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Steel 1 9/32" Nylon Insert Locknut, Hex
1197FA00014 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Zinc Yellow-Chromate Plated Steel 1 11/64" Steel Insert Locknut, Hex
1138FA00067 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Zinc Yellow-Chromate Plated Steel 1 9/32" Nylon Insert Locknut, Hex
1155FA00007 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Zinc-Plated Steel 57/64" Nylon Insert Locknut, Hex
1160FA00009 1"-8 UNC Class 2B Right Hand 1 5/8" External Hex Zinc-Plated Steel 1 17/64" Nylon Insert Locknut, Hex
1156FA00007 1"-8 UNC Class 3B Right Hand 1 5/8" External Hex 18-8 Stainless Steel 59/64" Nylon Insert Locknut, Hex
1175FA00004 1/2"-13 UNC Class 2B Left Hand 3/4" External Hex Zinc-Plated Steel 7/16" Distorted Thread Locknut, Hex
1187FA00011 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 21/64" Flex-Top Locknut, Hex
1172FA00025 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 7/16" Distorted Thread Locknut, Hex
1178FA00009 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 7/16" Distorted Thread Locknut, Hex
1163FA00006 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 7/16" Lock Washer Locknut, Hex
1194FA00004 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 9/16" Cotter Pin Locknut, Hex
1146FA00027 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 19/32" Nylon Insert Locknut, Hex
1183FA00001 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 39/64" Flex-Top Locknut, Hex
1179FA00004 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 316 Stainless Steel 7/16" Distorted Thread Locknut, Hex
1173FA00007 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 316 Stainless Steel 7/16" Distorted Thread Locknut, Hex
1149FA00021 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 316 Stainless Steel 19/32" Nylon Insert Locknut, Hex
1151FA00007 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex 6061 Aluminum 19/32" Nylon Insert Locknut, Hex
1144FA00053 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Black Corrosion-Resistant-Coated Steel 19/32" Nylon Insert Locknut, Hex
1146FA00044 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Black-Oxide 18-8 Stainless Steel 19/32" Nylon Insert Locknut, Hex
1183FA00018 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Black-Oxide 18-8 Stainless Steel 39/64" Flex-Top Locknut, Hex
1174FA00022 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Black-Oxide Steel 7/16" Distorted Thread Locknut, Hex
1167FA00145 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Black-Oxide Steel 7/16" Distorted Thread Locknut; Hex
1169FA00004 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Black-Oxide Steel 1/2" Distorted Thread Locknut, Hex
1138FA00084 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Black-Oxide Steel 19/32" Nylon Insert Locknut, Hex
1152FA00008 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Brass 19/32" Nylon Insert Locknut, Hex
1186FA00039 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Cadmium-Plated Steel 21/64" Flex-Top Locknut, Hex
1167FA00011 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Cadmium-Plated Steel 7/16" Distorted Thread Locknut; Hex
1171FA00005 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Cadmium-Plated Steel 17/32" Distorted Thread Locknut, Hex
1153FA00009 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Grade 5 Titanium 19/32" Nylon Insert Locknut, Hex
1186FA00015 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Steel 21/64" Flex-Top Locknut, Hex
1199FA00001 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Steel 3/8" Steel Insert Locknut, Hex
1167FA00029 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Steel 7/16" Distorted Thread Locknut; Hex
1195FA00001 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Steel 1/2" Steel Insert Locknut, Hex
1138FA00008 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Steel 19/32" Nylon Insert Locknut, Hex
1174FA00009 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc Yellow-Chromate Plated Steel 7/16" Distorted Thread Locknut, Hex
1167FA00125 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc Yellow-Chromate Plated Steel 7/16" Distorted Thread Locknut; Hex
1138FA00053 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc Yellow-Chromate Plated Steel 19/32" Nylon Insert Locknut, Hex
1174FA00030 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Flake-Coated Steel 7/16" Distorted Thread Locknut, Hex
1167FA00163 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Flake-Coated Steel 7/16" Distorted Thread Locknut; Hex
1193FA00009 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Cotter Pin Locknut, Hex
1191FA00005 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Cotter Pin Locknut; Hex
1177FA00009 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Distorted Thread Locknut, Hex
1170FA00011 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Distorted Thread Locknut, Hex
1167FA00047 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Distorted Thread Locknut; Hex
1136FA00007 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Serrations Locknut, Hex
1161FA00022 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 31/64" Lock Washer Locknut, Hex
1169FA00032 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 1/2" Distorted Thread Locknut, Hex
1144FA00028 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 19/32" Nylon Insert Locknut, Hex
1141FA00010 1/2"-13 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 19/32" Nylon Insert Locknut; Hex
1189FA00005 1/2"-13 UNC Class 2B Right Hand 13/16" External Hex 18-8 Stainless Steel 1/2" Flex-Top Locknut, Hex
1190FA00008 1/2"-13 UNC Class 2B Right Hand 13/16" External Hex Cadmium-Plated Steel 21/64" Flex-Top Locknut, Hex
1188FA00007 1/2"-13 UNC Class 2B Right Hand 13/16" External Hex Cadmium-Plated Steel 1/2" Flex-Top Locknut, Hex
1158FA00004 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex 18-8 Stainless Steel 45/64" Nylon Insert Locknut, Hex
1157FA00002 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex 316 Stainless Steel 17/32" Nylon Insert Locknut, Hex
1159FA00002 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex 316 Stainless Steel 45/64" Nylon Insert Locknut, Hex
1155FA00012 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex Black Corrosion-Resistant-Coated Steel 17/32" Nylon Insert Locknut, Hex
1198FA00001 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex Steel 9/16" Steel Insert Locknut, Hex
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