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
1188FA00008 5/8"-11 UNC Class 2B Right Hand 1" External Hex Cadmium-Plated Steel 41/64" Flex-Top Locknut, Hex
1158FA00005 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex 18-8 Stainless Steel 55/64" Nylon Insert Locknut, Hex
1157FA00003 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex 316 Stainless Steel 39/64" Nylon Insert Locknut, Hex
1159FA00003 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex 316 Stainless Steel 55/64" Nylon Insert Locknut, Hex
1198FA00002 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex Steel 45/64" Steel Insert Locknut, Hex
1197FA00004 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex Steel 47/64" Steel Insert Locknut, Hex
1197FA00012 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex Zinc Yellow-Chromate Plated Steel 47/64" Steel Insert Locknut, Hex
1155FA00005 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex Zinc-Plated Steel 39/64" Nylon Insert Locknut, Hex
1160FA00006 5/8"-11 UNC Class 2B Right Hand 1 1/16" External Hex Zinc-Plated Steel 55/64" Nylon Insert Locknut, Hex
1156FA00001 5/8"-11 UNC Class 3B Right Hand 1 1/16" External Hex 18-8 Stainless Steel 5/8" Nylon Insert Locknut, Hex
1187FA00013 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 13/32" Flex-Top Locknut, Hex
1172FA00028 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 35/64" Distorted Thread Locknut, Hex
1178FA00012 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 35/64" Distorted Thread Locknut, Hex
1194FA00016 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 23/32" Cotter Pin Locknut, Hex
1146FA00031 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex 18-8 Stainless Steel 3/4" Nylon Insert Locknut, Hex
1149FA00025 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex 316 Stainless Steel 3/4" Nylon Insert Locknut, Hex
1167FA00156 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Black-Oxide Steel 35/64" Distorted Thread Locknut; Hex
1169FA00015 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Black-Oxide Steel 5/8" Distorted Thread Locknut, Hex
1138FA00089 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Black-Oxide Steel 3/4" Nylon Insert Locknut, Hex
1186FA00042 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Cadmium-Plated Steel 13/32" Flex-Top Locknut, Hex
1167FA00015 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Cadmium-Plated Steel 35/64" Distorted Thread Locknut; Hex
1186FA00018 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Steel 13/32" Flex-Top Locknut, Hex
1167FA00034 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Steel 35/64" Distorted Thread Locknut; Hex
1138FA00016 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Steel 3/4" Nylon Insert Locknut, Hex
1137FA00006 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Steel 55/64" Two-Piece Clamp Locknut, Hex
1174FA00013 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc Yellow-Chromate Plated Steel 35/64" Distorted Thread Locknut, Hex
1167FA00137 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc Yellow-Chromate Plated Steel 35/64" Distorted Thread Locknut; Hex
1138FA00058 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc Yellow-Chromate Plated Steel 3/4" Nylon Insert Locknut, Hex
1167FA00171 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Flake-Coated Steel 35/64" Distorted Thread Locknut; Hex
1193FA00014 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Cotter Pin Locknut, Hex
1191FA00015 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Cotter Pin Locknut; Hex
1177FA00012 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Distorted Thread Locknut, Hex
1167FA00052 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 35/64" Distorted Thread Locknut; Hex
1169FA00026 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 5/8" Distorted Thread Locknut, Hex
1144FA00037 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 3/4" Nylon Insert Locknut, Hex
1141FA00015 5/8"-18 UNF Class 2B Right Hand 15/16" External Hex Zinc-Plated Steel 3/4" Nylon Insert Locknut; Hex
1145FA00009 5/8"-18 UNF Class 3B Right Hand 15/16" External Hex Cadmium Yellow-Chromate Plated Steel 3/4" Nylon Insert Locknut, Hex
1182FA00011 5/8"-18 UNF Class 3B Right Hand 15/16" External Hex Cadmium Yellow-Chromate Plated Steel 49/64" Flex-Top Locknut, Hex
1163FA00007 6-32 UNC Class 2B Right Hand 1/4" External Hex 18-8 Stainless Steel 3/32" Lock Washer Locknut, Hex
1161FA00007 6-32 UNC Class 2B Right Hand 1/4" External Hex Zinc-Plated Steel 1/8" Lock Washer Locknut, Hex
1172FA00001 6-32 UNC Class 2B Right Hand 5/16" External Hex 18-8 Stainless Steel 7/64" Distorted Thread Locknut, Hex
1187FA00001 6-32 UNC Class 2B Right Hand 5/16" External Hex 18-8 Stainless Steel 9/64" Flex-Top Locknut, Hex
1163FA00002 6-32 UNC Class 2B Right Hand 5/16" External Hex 18-8 Stainless Steel 9/64" Lock Washer Locknut, Hex
1146FA00005 6-32 UNC Class 2B Right Hand 5/16" External Hex 18-8 Stainless Steel 11/64" Nylon Insert Locknut, Hex
1183FA00012 6-32 UNC Class 2B Right Hand 5/16" External Hex 18-8 Stainless Steel 3/16" Flex-Top Locknut, Hex
1149FA00003 6-32 UNC Class 2B Right Hand 5/16" External Hex 316 Stainless Steel 11/64" Nylon Insert Locknut, Hex
1144FA00046 6-32 UNC Class 2B Right Hand 5/16" External Hex Black Corrosion-Resistant-Coated Steel 11/64" Nylon Insert Locknut, Hex
1161FA00002 6-32 UNC Class 2B Right Hand 5/16" External Hex Black Zinc Plated Steel 9/64" Lock Washer Locknut, Hex
1146FA00038 6-32 UNC Class 2B Right Hand 5/16" External Hex Black-Oxide 18-8 Stainless Steel 11/64" Nylon Insert Locknut, Hex
1166FA00002 6-32 UNC Class 2B Right Hand 5/16" External Hex Black-Oxide Steel 9/64" Lock Washer Locknut, Hex
1152FA00001 6-32 UNC Class 2B Right Hand 5/16" External Hex Brass 11/64" Nylon Insert Locknut, Hex
1186FA00028 6-32 UNC Class 2B Right Hand 5/16" External Hex Cadmium-Plated Steel 9/64" Flex-Top Locknut, Hex
1153FA00002 6-32 UNC Class 2B Right Hand 5/16" External Hex Grade 5 Titanium 11/64" Nylon Insert Locknut, Hex
1186FA00005 6-32 UNC Class 2B Right Hand 5/16" External Hex Steel 9/64" Flex-Top Locknut, Hex
1170FA00001 6-32 UNC Class 2B Right Hand 5/16" External Hex Zinc-Plated Steel 7/64" Distorted Thread Locknut, Hex
1161FA00010 6-32 UNC Class 2B Right Hand 5/16" External Hex Zinc-Plated Steel 9/64" Lock Washer Locknut, Hex
1166FA00007 6-32 UNC Class 2B Right Hand 5/16" External Hex Zinc-Plated Steel 9/64" Lock Washer Locknut, Hex
1144FA00005 6-32 UNC Class 2B Right Hand 5/16" External Hex Zinc-Plated Steel 11/64" Nylon Insert Locknut, Hex
1148FA00003 6-32 UNC Class 3B Right Hand 5/16" External Hex 18-8 Stainless Steel 3/16" Nylon Insert Locknut, Hex
1182FA00003 6-32 UNC Class 3B Right Hand 5/16" External Hex Cadmium Yellow-Chromate Plated Steel 3/16" Flex-Top Locknut, Hex
1145FA00002 6-32 UNC Class 3B Right Hand 5/16" External Hex Cadmium Yellow-Chromate Plated Steel 3/16" Nylon Insert Locknut, Hex
1185FA00002 6-32 UNC Class 3B Right Hand 5/16" External Hex Silver-Plated 18-8 Stainless Steel 11/64" Flex-Top Locknut, Hex
1146FA00019 6-40 UNF Class 2B Right Hand 5/16" External Hex 18-8 Stainless Steel 11/64" Nylon Insert Locknut, Hex
1146FA00048 6-40 UNF Class 2B Right Hand 5/16" External Hex Black-Oxide 18-8 Stainless Steel 11/64" Nylon Insert Locknut, Hex
1146FA00025 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex 18-8 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1149FA00006 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex 316 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1146FA00055 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex Black-Oxide 18-8 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1138FA00082 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex Black-Oxide Steel 29/64" Nylon Insert Locknut, Hex
1138FA00002 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex Steel 29/64" Nylon Insert Locknut, Hex
1138FA00051 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex Zinc Yellow-Chromate Plated Steel 29/64" Nylon Insert Locknut, Hex
1144FA00027 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex Zinc-Plated Steel 29/64" Nylon Insert Locknut, Hex
1141FA00008 7/16"-14 UNC Class 2B Right Hand 5/8" External Hex Zinc-Plated Steel 29/64" Nylon Insert Locknut; Hex
1172FA00023 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex 18-8 Stainless Steel 3/8" Distorted Thread Locknut, Hex
1178FA00007 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex 18-8 Stainless Steel 3/8" Distorted Thread Locknut, Hex
1167FA00144 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Black-Oxide Steel 3/8" Distorted Thread Locknut; Hex
1169FA00007 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Black-Oxide Steel 27/64" Distorted Thread Locknut, Hex
1167FA00009 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Cadmium-Plated Steel 3/8" Distorted Thread Locknut; Hex
1171FA00004 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Cadmium-Plated Steel 29/64" Distorted Thread Locknut, Hex
1167FA00027 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Steel 3/8" Distorted Thread Locknut; Hex
1174FA00007 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc Yellow-Chromate Plated Steel 3/8" Distorted Thread Locknut, Hex
1167FA00124 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc Yellow-Chromate Plated Steel 3/8" Distorted Thread Locknut; Hex
1167FA00162 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc-Flake-Coated Steel 3/8" Distorted Thread Locknut; Hex
1193FA00007 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Cotter Pin Locknut, Hex
1191FA00004 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Cotter Pin Locknut; Hex
1177FA00004 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Distorted Thread Locknut, Hex
1167FA00045 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 3/8" Distorted Thread Locknut; Hex
1169FA00018 7/16"-14 UNC Class 2B Right Hand 11/16" External Hex Zinc-Plated Steel 27/64" Distorted Thread Locknut, Hex
1189FA00004 7/16"-14 UNC Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 29/64" Flex-Top Locknut, Hex
1190FA00007 7/16"-14 UNC Class 2B Right Hand 3/4" External Hex Cadmium-Plated Steel 21/64" Flex-Top Locknut, Hex
1160FA00004 7/16"-14 UNC Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 39/64" Nylon Insert Locknut, Hex
1146FA00026 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex 18-8 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1183FA00010 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex 18-8 Stainless Steel 15/32" Flex-Top Locknut, Hex
1149FA00007 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex 316 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1146FA00056 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex Black-Oxide 18-8 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1138FA00083 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex Black-Oxide Steel 29/64" Nylon Insert Locknut, Hex
1186FA00038 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex Cadmium-Plated Steel 21/64" Flex-Top Locknut, Hex
1138FA00003 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex Steel 29/64" Nylon Insert Locknut, Hex
1138FA00052 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex Zinc Yellow-Chromate Plated Steel 29/64" Nylon Insert Locknut, Hex
1144FA00034 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex Zinc-Plated Steel 29/64" Nylon Insert Locknut, Hex
1141FA00009 7/16"-20 UNF Class 2B Right Hand 5/8" External Hex Zinc-Plated Steel 29/64" Nylon Insert Locknut; Hex
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