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
1146FA00046 3-48 UNC Class 2B Right Hand 1/4" External Hex Black-Oxide 18-8 Stainless Steel 9/64" Nylon Insert Locknut, Hex
1144FA00002 3-48 UNC Class 2B Right Hand 1/4" External Hex Zinc-Plated Steel 9/64" Nylon Insert Locknut, Hex
1175FA00006 3/4"-10 UNC Class 2B Left Hand 1 1/8" External Hex Zinc-Plated Steel 41/64" Distorted Thread Locknut, Hex
1146FA00032 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex 18-8 Stainless Steel 7/8" Nylon Insert Locknut, Hex
1149FA00008 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex 316 Stainless Steel 7/8" Nylon Insert Locknut, Hex
1146FA00059 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Black-Oxide 18-8 Stainless Steel 7/8" Nylon Insert Locknut, Hex
1138FA00090 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Black-Oxide Steel 7/8" Nylon Insert Locknut, Hex
1180FA00003 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Black-Oxide Steel 57/64" Flex-Top Locknut, Hex
1152FA00010 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Brass 7/8" Nylon Insert Locknut, Hex
1186FA00043 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Cadmium-Plated Steel 27/64" Flex-Top Locknut, Hex
1180FA00001 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Cadmium-Plated Steel 57/64" Flex-Top Locknut, Hex
1186FA00019 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Steel 27/64" Flex-Top Locknut, Hex
1138FA00010 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Steel 7/8" Nylon Insert Locknut, Hex
1138FA00059 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Zinc Yellow-Chromate Plated Steel 7/8" Nylon Insert Locknut, Hex
1144FA00038 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Zinc-Plated Steel 7/8" Nylon Insert Locknut, Hex
1141FA00016 3/4"-10 UNC Class 2B Right Hand 1 1/16" External Hex Zinc-Plated Steel 7/8" Nylon Insert Locknut; Hex
1172FA00029 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex 18-8 Stainless Steel 41/64" Distorted Thread Locknut, Hex
1178FA00013 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex 18-8 Stainless Steel 41/64" Distorted Thread Locknut, Hex
1194FA00006 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex 18-8 Stainless Steel 13/16" Cotter Pin Locknut, Hex
1179FA00006 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex 316 Stainless Steel 41/64" Distorted Thread Locknut, Hex
1167FA00148 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Black-Oxide Steel 41/64" Distorted Thread Locknut; Hex
1169FA00006 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Black-Oxide Steel 3/4" Distorted Thread Locknut, Hex
1190FA00001 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Cadmium-Plated Steel 27/64" Flex-Top Locknut, Hex
1167FA00005 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Cadmium-Plated Steel 41/64" Distorted Thread Locknut; Hex
1188FA00001 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Cadmium-Plated Steel 49/64" Flex-Top Locknut, Hex
1171FA00007 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Cadmium-Plated Steel 25/32" Distorted Thread Locknut, Hex
1199FA00005 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Steel 9/16" Steel Insert Locknut, Hex
1167FA00035 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Steel 41/64" Distorted Thread Locknut; Hex
1195FA00003 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Steel 3/4" Steel Insert Locknut, Hex
1174FA00014 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc Yellow-Chromate Plated Steel 41/64" Distorted Thread Locknut, Hex
1167FA00128 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc Yellow-Chromate Plated Steel 41/64" Distorted Thread Locknut; Hex
1167FA00165 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc-Flake-Coated Steel 41/64" Distorted Thread Locknut; Hex
1191FA00007 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 41/64" Cotter Pin Locknut; Hex
1177FA00013 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 41/64" Distorted Thread Locknut, Hex
1167FA00053 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 41/64" Distorted Thread Locknut; Hex
1193FA00015 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 21/32" Cotter Pin Locknut, Hex
1169FA00034 3/4"-10 UNC Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 3/4" Distorted Thread Locknut, Hex
1158FA00006 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex 18-8 Stainless Steel 1" Nylon Insert Locknut, Hex
1157FA00004 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex 316 Stainless Steel 45/64" Nylon Insert Locknut, Hex
1159FA00004 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex 316 Stainless Steel 1" Nylon Insert Locknut, Hex
1198FA00003 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex Steel 27/32" Steel Insert Locknut, Hex
1197FA00005 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex Steel 7/8" Steel Insert Locknut, Hex
1197FA00013 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex Zinc Yellow-Chromate Plated Steel 57/64" Steel Insert Locknut, Hex
1155FA00006 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex Zinc-Plated Steel 45/64" Nylon Insert Locknut, Hex
1160FA00007 3/4"-10 UNC Class 2B Right Hand 1 1/4" External Hex Zinc-Plated Steel 1" Nylon Insert Locknut, Hex
1156FA00002 3/4"-10 UNC Class 3B Right Hand 1 1/4" External Hex 18-8 Stainless Steel 45/64" Nylon Insert Locknut, Hex
1187FA00014 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex 18-8 Stainless Steel 27/64" Flex-Top Locknut, Hex
1146FA00033 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex 18-8 Stainless Steel 7/8" Nylon Insert Locknut, Hex
1149FA00009 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex 316 Stainless Steel 7/8" Nylon Insert Locknut, Hex
1138FA00091 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Black-Oxide Steel 7/8" Nylon Insert Locknut, Hex
1180FA00004 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Black-Oxide Steel 57/64" Flex-Top Locknut, Hex
1186FA00026 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Cadmium-Plated Steel 27/64" Flex-Top Locknut, Hex
1180FA00002 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Cadmium-Plated Steel 57/64" Flex-Top Locknut, Hex
1186FA00020 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Steel 27/64" Flex-Top Locknut, Hex
1138FA00017 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Steel 7/8" Nylon Insert Locknut, Hex
1138FA00060 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Zinc Yellow-Chromate Plated Steel 7/8" Nylon Insert Locknut, Hex
1144FA00039 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Zinc-Plated Steel 7/8" Nylon Insert Locknut, Hex
1141FA00017 3/4"-16 UNF Class 2B Right Hand 1 1/16" External Hex Zinc-Plated Steel 7/8" Nylon Insert Locknut; Hex
1172FA00030 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex 18-8 Stainless Steel 41/64" Distorted Thread Locknut, Hex
1178FA00014 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex 18-8 Stainless Steel 41/64" Distorted Thread Locknut, Hex
1194FA00017 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex 18-8 Stainless Steel 13/16" Cotter Pin Locknut, Hex
1167FA00157 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Black-Oxide Steel 41/64" Distorted Thread Locknut; Hex
1167FA00016 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Cadmium-Plated Steel 41/64" Distorted Thread Locknut; Hex
1199FA00002 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Steel 9/16" Steel Insert Locknut, Hex
1167FA00036 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Steel 41/64" Distorted Thread Locknut; Hex
1195FA00004 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Steel 3/4" Steel Insert Locknut, Hex
1137FA00007 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Steel 1 3/64" Two-Piece Clamp Locknut, Hex
1174FA00015 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Zinc Yellow-Chromate Plated Steel 41/64" Distorted Thread Locknut, Hex
1167FA00138 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Zinc Yellow-Chromate Plated Steel 41/64" Distorted Thread Locknut; Hex
1167FA00172 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Zinc-Flake-Coated Steel 41/64" Distorted Thread Locknut; Hex
1191FA00016 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 41/64" Cotter Pin Locknut; Hex
1177FA00014 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 41/64" Distorted Thread Locknut, Hex
1167FA00054 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 41/64" Distorted Thread Locknut; Hex
1193FA00016 3/4"-16 UNF Class 2B Right Hand 1 1/8" External Hex Zinc-Plated Steel 21/32" Cotter Pin Locknut, Hex
1182FA00012 3/4"-16 UNF Class 3B Right Hand 1 1/16" External Hex Cadmium Yellow-Chromate Plated Steel 57/64" Flex-Top Locknut, Hex
1175FA00003 3/8"-16 UNC Class 2B Left Hand 9/16" External Hex Zinc-Plated Steel 21/64" Distorted Thread Locknut, Hex
1187FA00009 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 9/32" Flex-Top Locknut, Hex
1172FA00021 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 21/64" Distorted Thread Locknut, Hex
1178FA00005 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 21/64" Distorted Thread Locknut, Hex
1163FA00013 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 25/64" Lock Washer Locknut, Hex
1194FA00003 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 13/32" Cotter Pin Locknut, Hex
1146FA00023 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1183FA00008 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 18-8 Stainless Steel 15/32" Flex-Top Locknut, Hex
1179FA00003 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 316 Stainless Steel 21/64" Distorted Thread Locknut, Hex
1173FA00006 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 316 Stainless Steel 21/64" Distorted Thread Locknut, Hex
1149FA00019 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 316 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1151FA00006 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex 6061 Aluminum 29/64" Nylon Insert Locknut, Hex
1144FA00052 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Black Corrosion-Resistant-Coated Steel 29/64" Nylon Insert Locknut, Hex
1146FA00043 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Black-Oxide 18-8 Stainless Steel 29/64" Nylon Insert Locknut, Hex
1183FA00017 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Black-Oxide 18-8 Stainless Steel 15/32" Flex-Top Locknut, Hex
1174FA00021 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Black-Oxide Steel 21/64" Distorted Thread Locknut, Hex
1167FA00143 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Black-Oxide Steel 21/64" Distorted Thread Locknut; Hex
1169FA00003 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Black-Oxide Steel 3/8" Distorted Thread Locknut, Hex
1138FA00080 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Black-Oxide Steel 29/64" Nylon Insert Locknut, Hex
1152FA00007 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Brass 29/64" Nylon Insert Locknut, Hex
1186FA00036 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Cadmium-Plated Steel 9/32" Flex-Top Locknut, Hex
1167FA00003 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Cadmium-Plated Steel 21/64" Distorted Thread Locknut; Hex
1171FA00003 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Cadmium-Plated Steel 25/64" Distorted Thread Locknut, Hex
1153FA00008 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Grade 5 Titanium 29/64" Nylon Insert Locknut, Hex
1186FA00013 3/8"-16 UNC Class 2B Right Hand 9/16" External Hex Steel 9/32" Flex-Top Locknut, Hex
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