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
1172FA00024 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex 18-8 Stainless Steel 3/8" Distorted Thread Locknut, Hex
1178FA00008 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex 18-8 Stainless Steel 3/8" Distorted Thread Locknut, Hex
1167FA00153 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Black-Oxide Steel 3/8" Distorted Thread Locknut; Hex
1169FA00013 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Black-Oxide Steel 27/64" Distorted Thread Locknut, Hex
1167FA00010 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Cadmium-Plated Steel 3/8" Distorted Thread Locknut; Hex
1167FA00028 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Steel 3/8" Distorted Thread Locknut; Hex
1137FA00004 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Steel 19/32" Two-Piece Clamp Locknut, Hex
1174FA00008 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc Yellow-Chromate Plated Steel 3/8" Distorted Thread Locknut, Hex
1167FA00134 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc Yellow-Chromate Plated Steel 3/8" Distorted Thread Locknut; Hex
1167FA00168 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc-Flake-Coated Steel 3/8" Distorted Thread Locknut; Hex
1193FA00008 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Cotter Pin Locknut, Hex
1191FA00011 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Cotter Pin Locknut; Hex
1177FA00008 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Distorted Thread Locknut, Hex
1167FA00046 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Distorted Thread Locknut; Hex
1169FA00024 7/16"-20 UNF Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 27/64" Distorted Thread Locknut, Hex
1148FA00012 7/16"-20 UNF Class 3B Right Hand 11/16" External Hex 18-8 Stainless Steel 15/32" Nylon Insert Locknut, Hex
1182FA00008 7/16"-20 UNF Class 3B Right Hand 11/16" External Hex Cadmium Yellow-Chromate Plated Steel 15/32" Flex-Top Locknut, Hex
1187FA00015 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex 18-8 Stainless Steel 31/64" Flex-Top Locknut, Hex
1146FA00034 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex 18-8 Stainless Steel 63/64" Nylon Insert Locknut, Hex
1149FA00013 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex 316 Stainless Steel 63/64" Nylon Insert Locknut, Hex
1138FA00093 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex Black-Oxide Steel 63/64" Nylon Insert Locknut, Hex
1138FA00006 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex Steel 63/64" Nylon Insert Locknut, Hex
1138FA00062 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex Zinc Yellow-Chromate Plated Steel 63/64" Nylon Insert Locknut, Hex
1144FA00041 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex Zinc-Plated Steel 63/64" Nylon Insert Locknut, Hex
1141FA00019 7/8"-14 UNF Class 2B Right Hand 1 1/4" External Hex Zinc-Plated Steel 63/64" Nylon Insert Locknut; Hex
1167FA00158 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Black-Oxide Steel 3/4" Distorted Thread Locknut; Hex
1169FA00016 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Black-Oxide Steel 13/16" Distorted Thread Locknut, Hex
1167FA00018 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Cadmium-Plated Steel 3/4" Distorted Thread Locknut; Hex
1199FA00003 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Steel 19/32" Steel Insert Locknut, Hex
1167FA00037 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Steel 3/4" Distorted Thread Locknut; Hex
1195FA00006 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Steel 7/8" Steel Insert Locknut, Hex
1137FA00008 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Steel 1 13/64" Two-Piece Clamp Locknut, Hex
1167FA00139 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Zinc Yellow-Chromate Plated Steel 3/4" Distorted Thread Locknut; Hex
1193FA00018 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Zinc-Plated Steel 3/4" Cotter Pin Locknut, Hex
1167FA00056 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Zinc-Plated Steel 3/4" Distorted Thread Locknut; Hex
1191FA00017 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Zinc-Plated Steel 49/64" Cotter Pin Locknut; Hex
1169FA00027 7/8"-14 UNF Class 2B Right Hand 1 5/16" External Hex Zinc-Plated Steel 13/16" Distorted Thread Locknut, Hex
1146FA00012 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex 18-8 Stainless Steel 63/64" Nylon Insert Locknut, Hex
1149FA00010 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex 316 Stainless Steel 63/64" Nylon Insert Locknut, Hex
1138FA00092 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex Black-Oxide Steel 63/64" Nylon Insert Locknut, Hex
1186FA00002 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex Cadmium-Plated Steel 31/64" Flex-Top Locknut, Hex
1138FA00004 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex Steel 63/64" Nylon Insert Locknut, Hex
1138FA00061 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex Zinc Yellow-Chromate Plated Steel 63/64" Nylon Insert Locknut, Hex
1144FA00040 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex Zinc-Plated Steel 63/64" Nylon Insert Locknut, Hex
1141FA00018 7/8"-9 UNC Class 2B Right Hand 1 1/4" External Hex Zinc-Plated Steel 63/64" Nylon Insert Locknut; Hex
1178FA00015 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex 18-8 Stainless Steel 3/4" Distorted Thread Locknut, Hex
1194FA00007 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex 18-8 Stainless Steel 29/32" Cotter Pin Locknut, Hex
1174FA00024 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Black-Oxide Steel 3/4" Distorted Thread Locknut, Hex
1167FA00149 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Black-Oxide Steel 3/4" Distorted Thread Locknut; Hex
1169FA00008 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Black-Oxide Steel 13/16" Distorted Thread Locknut, Hex
1190FA00002 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Cadmium-Plated Steel 31/64" Flex-Top Locknut, Hex
1167FA00017 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Cadmium-Plated Steel 3/4" Distorted Thread Locknut; Hex
1188FA00002 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Cadmium-Plated Steel 57/64" Flex-Top Locknut, Hex
1199FA00006 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Steel 19/32" Steel Insert Locknut, Hex
1195FA00005 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Steel 7/8" Steel Insert Locknut, Hex
1174FA00016 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Zinc Yellow-Chromate Plated Steel 3/4" Distorted Thread Locknut, Hex
1167FA00129 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Zinc Yellow-Chromate Plated Steel 3/4" Distorted Thread Locknut; Hex
1193FA00017 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Zinc-Plated Steel 3/4" Cotter Pin Locknut, Hex
1167FA00055 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Zinc-Plated Steel 3/4" Distorted Thread Locknut; Hex
1169FA00019 7/8"-9 UNC Class 2B Right Hand 1 5/16" External Hex Zinc-Plated Steel 13/16" Distorted Thread Locknut, Hex
1158FA00007 7/8"-9 UNC Class 2B Right Hand 1 7/16" External Hex 18-8 Stainless Steel 1 9/64" Nylon Insert Locknut, Hex
1198FA00004 7/8"-9 UNC Class 2B Right Hand 1 7/16" External Hex Steel 63/64" Steel Insert Locknut, Hex
1197FA00010 7/8"-9 UNC Class 2B Right Hand 1 7/16" External Hex Steel 1 1/32" Steel Insert Locknut, Hex
1160FA00008 7/8"-9 UNC Class 2B Right Hand 1 7/16" External Hex Zinc-Plated Steel 1 1/8" Nylon Insert Locknut, Hex
1161FA00008 8-32 UNC Class 2B Right Hand 5/16" External Hex Zinc-Plated Steel 9/64" Lock Washer Locknut, Hex
1172FA00002 8-32 UNC Class 2B Right Hand 11/32" External Hex 18-8 Stainless Steel 1/8" Distorted Thread Locknut, Hex
1163FA00003 8-32 UNC Class 2B Right Hand 11/32" External Hex 18-8 Stainless Steel 11/64" Lock Washer Locknut, Hex
1187FA00002 8-32 UNC Class 2B Right Hand 11/32" External Hex 18-8 Stainless Steel 3/16" Flex-Top Locknut, Hex
1146FA00006 8-32 UNC Class 2B Right Hand 11/32" External Hex 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1183FA00013 8-32 UNC Class 2B Right Hand 11/32" External Hex 18-8 Stainless Steel 1/4" Flex-Top Locknut, Hex
1173FA00001 8-32 UNC Class 2B Right Hand 11/32" External Hex 316 Stainless Steel 1/8" Distorted Thread Locknut, Hex
1149FA00004 8-32 UNC Class 2B Right Hand 11/32" External Hex 316 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1151FA00001 8-32 UNC Class 2B Right Hand 11/32" External Hex 6061 Aluminum 15/64" Nylon Insert Locknut, Hex
1144FA00047 8-32 UNC Class 2B Right Hand 11/32" External Hex Black Corrosion-Resistant-Coated Steel 15/64" Nylon Insert Locknut, Hex
1161FA00003 8-32 UNC Class 2B Right Hand 11/32" External Hex Black Zinc Plated Steel 5/32" Lock Washer Locknut, Hex
1146FA00039 8-32 UNC Class 2B Right Hand 11/32" External Hex Black-Oxide 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1166FA00003 8-32 UNC Class 2B Right Hand 11/32" External Hex Black-Oxide Steel 3/16" Lock Washer Locknut, Hex
1152FA00002 8-32 UNC Class 2B Right Hand 11/32" External Hex Brass 15/64" Nylon Insert Locknut, Hex
1186FA00029 8-32 UNC Class 2B Right Hand 11/32" External Hex Cadmium-Plated Steel 3/16" Flex-Top Locknut, Hex
1153FA00003 8-32 UNC Class 2B Right Hand 11/32" External Hex Grade 5 Titanium 15/64" Nylon Insert Locknut, Hex
1186FA00006 8-32 UNC Class 2B Right Hand 11/32" External Hex Steel 3/16" Flex-Top Locknut, Hex
1170FA00002 8-32 UNC Class 2B Right Hand 11/32" External Hex Zinc-Plated Steel 1/8" Distorted Thread Locknut, Hex
1136FA00001 8-32 UNC Class 2B Right Hand 11/32" External Hex Zinc-Plated Steel 1/8" Serrations Locknut, Hex
1161FA00011 8-32 UNC Class 2B Right Hand 11/32" External Hex Zinc-Plated Steel 5/32" Lock Washer Locknut, Hex
1166FA00008 8-32 UNC Class 2B Right Hand 11/32" External Hex Zinc-Plated Steel 3/16" Lock Washer Locknut, Hex
1144FA00006 8-32 UNC Class 2B Right Hand 11/32" External Hex Zinc-Plated Steel 15/64" Nylon Insert Locknut, Hex
1148FA00004 8-32 UNC Class 3B Right Hand 11/32" External Hex 18-8 Stainless Steel 9/32" Nylon Insert Locknut, Hex
1182FA00004 8-32 UNC Class 3B Right Hand 11/32" External Hex Cadmium Yellow-Chromate Plated Steel 1/4" Flex-Top Locknut, Hex
1145FA00003 8-32 UNC Class 3B Right Hand 11/32" External Hex Cadmium Yellow-Chromate Plated Steel 9/32" Nylon Insert Locknut, Hex
1185FA00003 8-32 UNC Class 3B Right Hand 11/32" External Hex Silver-Plated 18-8 Stainless Steel 15/64" Flex-Top Locknut, Hex
1146FA00020 8-36 UNF Class 2B Right Hand 11/32" External Hex 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1146FA00049 8-36 UNF Class 2B Right Hand 11/32" External Hex Black-Oxide 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1146FA00011 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex 18-8 Stainless Steel 41/64" Nylon Insert Locknut, Hex
1149FA00023 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex 316 Stainless Steel 41/64" Nylon Insert Locknut, Hex
1167FA00146 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Black-Oxide Steel 31/64" Distorted Thread Locknut; Hex
1138FA00086 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Black-Oxide Steel 41/64" Nylon Insert Locknut, Hex
1167FA00013 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Cadmium-Plated Steel 31/64" Distorted Thread Locknut; Hex
1167FA00031 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Steel 31/64" Distorted Thread Locknut; Hex
1138FA00019 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Steel 41/64" Nylon Insert Locknut, Hex
1174FA00011 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc Yellow-Chromate Plated Steel 31/64" Distorted Thread Locknut, Hex
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