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
1197FA00003 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex Steel 37/64" Steel Insert Locknut, Hex
1197FA00011 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex Zinc Yellow-Chromate Plated Steel 19/32" Steel Insert Locknut, Hex
1155FA00004 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 17/32" Nylon Insert Locknut, Hex
1160FA00005 1/2"-13 UNC Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 45/64" Nylon Insert Locknut, Hex
1156FA00006 1/2"-13 UNC Class 3B Right Hand 7/8" External Hex 18-8 Stainless Steel 17/32" Nylon Insert Locknut, Hex
1187FA00012 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 21/64" Flex-Top Locknut, Hex
1172FA00026 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 7/16" Distorted Thread Locknut, Hex
1178FA00010 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 7/16" Distorted Thread Locknut, Hex
1194FA00015 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 9/16" Cotter Pin Locknut, Hex
1146FA00028 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 19/32" Nylon Insert Locknut, Hex
1183FA00011 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex 18-8 Stainless Steel 39/64" Flex-Top Locknut, Hex
1149FA00022 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex 316 Stainless Steel 19/32" Nylon Insert Locknut, Hex
1146FA00057 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Black-Oxide 18-8 Stainless Steel 19/32" Nylon Insert Locknut, Hex
1183FA00019 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Black-Oxide 18-8 Stainless Steel 39/64" Flex-Top Locknut, Hex
1167FA00154 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Black-Oxide Steel 7/16" Distorted Thread Locknut; Hex
1169FA00014 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Black-Oxide Steel 1/2" Distorted Thread Locknut, Hex
1138FA00085 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Black-Oxide Steel 19/32" Nylon Insert Locknut, Hex
1186FA00040 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Cadmium-Plated Steel 21/64" Flex-Top Locknut, Hex
1167FA00012 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Cadmium-Plated Steel 7/16" Distorted Thread Locknut; Hex
1186FA00016 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Steel 21/64" Flex-Top Locknut, Hex
1167FA00030 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Steel 7/16" Distorted Thread Locknut; Hex
1138FA00015 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Steel 19/32" Nylon Insert Locknut, Hex
1137FA00005 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Steel 41/64" Two-Piece Clamp Locknut, Hex
1174FA00010 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc Yellow-Chromate Plated Steel 7/16" Distorted Thread Locknut, Hex
1167FA00135 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc Yellow-Chromate Plated Steel 7/16" Distorted Thread Locknut; Hex
1138FA00054 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc Yellow-Chromate Plated Steel 19/32" Nylon Insert Locknut, Hex
1167FA00169 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Flake-Coated Steel 7/16" Distorted Thread Locknut; Hex
1193FA00010 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Cotter Pin Locknut, Hex
1191FA00012 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Cotter Pin Locknut; Hex
1177FA00010 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Distorted Thread Locknut, Hex
1170FA00012 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Distorted Thread Locknut, Hex
1167FA00048 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 7/16" Distorted Thread Locknut; Hex
1169FA00025 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 1/2" Distorted Thread Locknut, Hex
1144FA00035 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 19/32" Nylon Insert Locknut, Hex
1141FA00011 1/2"-20 UNF Class 2B Right Hand 3/4" External Hex Zinc-Plated Steel 19/32" Nylon Insert Locknut; Hex
1145FA00008 1/2"-20 UNF Class 3B Right Hand 3/4" External Hex Cadmium Yellow-Chromate Plated Steel 19/32" Nylon Insert Locknut, Hex
1182FA00009 1/2"-20 UNF Class 3B Right Hand 3/4" External Hex Cadmium Yellow-Chromate Plated Steel 39/64" Flex-Top Locknut, Hex
1175FA00001 1/4"-20 UNC Class 2B Left Hand 7/16" External Hex Zinc-Plated Steel 7/32" Distorted Thread Locknut, Hex
1172FA00017 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 7/32" Distorted Thread Locknut, Hex
1178FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 7/32" Distorted Thread Locknut, Hex
1187FA00006 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 7/32" Flex-Top Locknut, Hex
1163FA00009 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 15/64" Lock Washer Locknut, Hex
1194FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 9/32" Cotter Pin Locknut, Hex
1183FA00004 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 19/64" Flex-Top Locknut, Hex
1146FA00009 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1179FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 316 Stainless Steel 7/32" Distorted Thread Locknut, Hex
1173FA00004 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 316 Stainless Steel 7/32" Distorted Thread Locknut, Hex
1149FA00015 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 316 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1151FA00004 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex 6061 Aluminum 5/16" Nylon Insert Locknut, Hex
1144FA00050 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black Corrosion-Resistant-Coated Steel 5/16" Nylon Insert Locknut, Hex
1161FA00006 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black Zinc Plated Steel 7/32" Lock Washer Locknut, Hex
1183FA00016 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide 18-8 Stainless Steel 19/64" Flex-Top Locknut, Hex
1146FA00041 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1166FA00005 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide Steel 3/16" Lock Washer Locknut, Hex
1174FA00019 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide Steel 7/32" Distorted Thread Locknut, Hex
1167FA00141 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide Steel 7/32" Distorted Thread Locknut; Hex
1169FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide Steel 1/4" Distorted Thread Locknut, Hex
1138FA00076 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide Steel 5/16" Nylon Insert Locknut, Hex
1152FA00005 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Brass 5/16" Nylon Insert Locknut, Hex
1167FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Cadmium-Plated Steel 7/32" Distorted Thread Locknut; Hex
1186FA00032 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Cadmium-Plated Steel 7/32" Flex-Top Locknut, Hex
1171FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Cadmium-Plated Steel 19/64" Distorted Thread Locknut, Hex
1153FA00006 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Grade 5 Titanium 5/16" Nylon Insert Locknut, Hex
1193FA00029 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Steel 7/32" Cotter Pin Locknut, Hex
1167FA00021 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Steel 7/32" Distorted Thread Locknut; Hex
1186FA00009 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Steel 7/32" Flex-Top Locknut, Hex
1138FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Steel 5/16" Nylon Insert Locknut, Hex
1174FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc Yellow-Chromate Plated Steel 7/32" Distorted Thread Locknut, Hex
1167FA00121 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc Yellow-Chromate Plated Steel 7/32" Distorted Thread Locknut; Hex
1138FA00045 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc Yellow-Chromate Plated Steel 5/16" Nylon Insert Locknut, Hex
1174FA00027 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Flake-Coated Steel 7/32" Distorted Thread Locknut, Hex
1167FA00159 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Flake-Coated Steel 7/32" Distorted Thread Locknut; Hex
1166FA00010 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 3/16" Lock Washer Locknut, Hex
1136FA00004 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 3/16" Serrations Locknut, Hex
1193FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Cotter Pin Locknut, Hex
1191FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Cotter Pin Locknut; Hex
1177FA00001 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Distorted Thread Locknut, Hex
1170FA00005 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Distorted Thread Locknut, Hex
1167FA00039 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Distorted Thread Locknut; Hex
1161FA00013 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 15/64" Lock Washer Locknut, Hex
1169FA00029 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 1/4" Distorted Thread Locknut, Hex
1144FA00024 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 5/16" Nylon Insert Locknut, Hex
1141FA00002 1/4"-20 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 5/16" Nylon Insert Locknut; Hex
1189FA00001 1/4"-20 UNC Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 19/64" Flex-Top Locknut, Hex
1158FA00001 1/4"-20 UNC Class 2B Right Hand 1/2" External Hex 18-8 Stainless Steel 3/8" Nylon Insert Locknut, Hex
1155FA00009 1/4"-20 UNC Class 2B Right Hand 1/2" External Hex Black Corrosion-Resistant-Coated Steel 9/32" Nylon Insert Locknut, Hex
1190FA00004 1/4"-20 UNC Class 2B Right Hand 1/2" External Hex Cadmium-Plated Steel 7/32" Flex-Top Locknut, Hex
1188FA00004 1/4"-20 UNC Class 2B Right Hand 1/2" External Hex Cadmium-Plated Steel 19/64" Flex-Top Locknut, Hex
1155FA00001 1/4"-20 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 9/32" Nylon Insert Locknut, Hex
1160FA00001 1/4"-20 UNC Class 2B Right Hand 1/2" External Hex Zinc-Plated Steel 3/8" Nylon Insert Locknut, Hex
1148FA00008 1/4"-20 UNC Class 3B Right Hand 7/16" External Hex 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1156FA00003 1/4"-20 UNC Class 3B Right Hand 1/2" External Hex 18-8 Stainless Steel 9/32" Nylon Insert Locknut, Hex
1172FA00018 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 7/32" Distorted Thread Locknut, Hex
1178FA00002 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 7/32" Distorted Thread Locknut, Hex
1187FA00005 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 7/32" Flex-Top Locknut, Hex
1163FA00010 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 15/64" Lock Washer Locknut, Hex
1194FA00012 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 9/32" Cotter Pin Locknut, Hex
1183FA00005 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 19/64" Flex-Top Locknut, Hex
1146FA00017 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1149FA00016 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex 316 Stainless Steel 5/16" Nylon Insert Locknut, Hex
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