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
1146FA00052 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Black-Oxide 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1169FA00010 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Black-Oxide Steel 1/4" Distorted Thread Locknut, Hex
1138FA00077 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Black-Oxide Steel 5/16" Nylon Insert Locknut, Hex
1167FA00006 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Cadmium-Plated Steel 7/32" Distorted Thread Locknut; Hex
1186FA00033 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Cadmium-Plated Steel 7/32" Flex-Top Locknut, Hex
1167FA00022 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Steel 7/32" Distorted Thread Locknut; Hex
1186FA00010 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Steel 7/32" Flex-Top Locknut, Hex
1138FA00012 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Steel 5/16" Nylon Insert Locknut, Hex
1137FA00001 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Steel 3/8" Two-Piece Clamp Locknut, Hex
1174FA00002 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc Yellow-Chromate Plated Steel 7/32" Distorted Thread Locknut, Hex
1167FA00131 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc Yellow-Chromate Plated Steel 7/32" Distorted Thread Locknut; Hex
1138FA00046 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc Yellow-Chromate Plated Steel 5/16" Nylon Insert Locknut, Hex
1193FA00002 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Cotter Pin Locknut, Hex
1191FA00009 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Cotter Pin Locknut; Hex
1177FA00005 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Distorted Thread Locknut, Hex
1170FA00008 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Distorted Thread Locknut, Hex
1167FA00040 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 7/32" Distorted Thread Locknut; Hex
1161FA00017 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 15/64" Lock Washer Locknut, Hex
1169FA00021 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 1/4" Distorted Thread Locknut, Hex
1144FA00031 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 5/16" Nylon Insert Locknut, Hex
1141FA00003 1/4"-28 UNF Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 5/16" Nylon Insert Locknut; Hex
1148FA00006 1/4"-28 UNF Class 3B Right Hand 7/16" External Hex 18-8 Stainless Steel 23/64" Nylon Insert Locknut, Hex
1182FA00005 1/4"-28 UNF Class 3B Right Hand 7/16" External Hex Cadmium Yellow-Chromate Plated Steel 5/16" Flex-Top Locknut, Hex
1145FA00005 1/4"-28 UNF Class 3B Right Hand 7/16" External Hex Cadmium Yellow-Chromate Plated Steel 23/64" Nylon Insert Locknut, Hex
1185FA00005 1/4"-28 UNF Class 3B Right Hand 7/16" External Hex Silver-Plated 18-8 Stainless Steel 9/32" Flex-Top Locknut, Hex
1172FA00003 10-24 UNC Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 1/8" Distorted Thread Locknut, Hex
1163FA00004 10-24 UNC Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 11/64" Lock Washer Locknut, Hex
1187FA00003 10-24 UNC Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 3/16" Flex-Top Locknut, Hex
1146FA00007 10-24 UNC Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1183FA00014 10-24 UNC Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 1/4" Flex-Top Locknut, Hex
1173FA00002 10-24 UNC Class 2B Right Hand 3/8" External Hex 316 Stainless Steel 1/8" Distorted Thread Locknut, Hex
1149FA00005 10-24 UNC Class 2B Right Hand 3/8" External Hex 316 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1151FA00002 10-24 UNC Class 2B Right Hand 3/8" External Hex 6061 Aluminum 15/64" Nylon Insert Locknut, Hex
1144FA00048 10-24 UNC Class 2B Right Hand 3/8" External Hex Black Corrosion-Resistant-Coated Steel 15/64" Nylon Insert Locknut, Hex
1161FA00004 10-24 UNC Class 2B Right Hand 3/8" External Hex Black Zinc Plated Steel 5/32" Lock Washer Locknut, Hex
1146FA00040 10-24 UNC Class 2B Right Hand 3/8" External Hex Black-Oxide 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1183FA00015 10-24 UNC Class 2B Right Hand 3/8" External Hex Black-Oxide 18-8 Stainless Steel 1/4" Flex-Top Locknut, Hex
1152FA00003 10-24 UNC Class 2B Right Hand 3/8" External Hex Brass 15/64" Nylon Insert Locknut, Hex
1186FA00030 10-24 UNC Class 2B Right Hand 3/8" External Hex Cadmium-Plated Steel 3/16" Flex-Top Locknut, Hex
1153FA00004 10-24 UNC Class 2B Right Hand 3/8" External Hex Grade 5 Titanium 15/64" Nylon Insert Locknut, Hex
1186FA00007 10-24 UNC Class 2B Right Hand 3/8" External Hex Steel 3/16" Flex-Top Locknut, Hex
1170FA00003 10-24 UNC Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 1/8" Distorted Thread Locknut, Hex
1136FA00002 10-24 UNC Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 1/8" Serrations Locknut, Hex
1161FA00012 10-24 UNC Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 5/32" Lock Washer Locknut, Hex
1144FA00007 10-24 UNC Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 15/64" Nylon Insert Locknut, Hex
1148FA00007 10-24 UNC Class 3B Right Hand 3/8" External Hex 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1172FA00004 10-32 UNF Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 1/8" Distorted Thread Locknut, Hex
1163FA00008 10-32 UNF Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 11/64" Lock Washer Locknut, Hex
1187FA00004 10-32 UNF Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 3/16" Flex-Top Locknut, Hex
1146FA00036 10-32 UNF Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1194FA00011 10-32 UNF Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 1/4" Cotter Pin Locknut, Hex
1183FA00003 10-32 UNF Class 2B Right Hand 3/8" External Hex 18-8 Stainless Steel 1/4" Flex-Top Locknut, Hex
1173FA00003 10-32 UNF Class 2B Right Hand 3/8" External Hex 316 Stainless Steel 1/8" Distorted Thread Locknut, Hex
1149FA00012 10-32 UNF Class 2B Right Hand 3/8" External Hex 316 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1151FA00003 10-32 UNF Class 2B Right Hand 3/8" External Hex 6061 Aluminum 15/64" Nylon Insert Locknut, Hex
1144FA00049 10-32 UNF Class 2B Right Hand 3/8" External Hex Black Corrosion-Resistant-Coated Steel 15/64" Nylon Insert Locknut, Hex
1161FA00005 10-32 UNF Class 2B Right Hand 3/8" External Hex Black Zinc Plated Steel 5/32" Lock Washer Locknut, Hex
1146FA00050 10-32 UNF Class 2B Right Hand 3/8" External Hex Black-Oxide 18-8 Stainless Steel 15/64" Nylon Insert Locknut, Hex
1166FA00004 10-32 UNF Class 2B Right Hand 3/8" External Hex Black-Oxide Steel 3/16" Lock Washer Locknut, Hex
1152FA00004 10-32 UNF Class 2B Right Hand 3/8" External Hex Brass 15/64" Nylon Insert Locknut, Hex
1186FA00031 10-32 UNF Class 2B Right Hand 3/8" External Hex Cadmium-Plated Steel 3/16" Flex-Top Locknut, Hex
1153FA00005 10-32 UNF Class 2B Right Hand 3/8" External Hex Grade 5 Titanium 15/64" Nylon Insert Locknut, Hex
1186FA00008 10-32 UNF Class 2B Right Hand 3/8" External Hex Steel 3/16" Flex-Top Locknut, Hex
1170FA00004 10-32 UNF Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 1/8" Distorted Thread Locknut, Hex
1136FA00003 10-32 UNF Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 1/8" Serrations Locknut, Hex
1161FA00016 10-32 UNF Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 5/32" Lock Washer Locknut, Hex
1166FA00009 10-32 UNF Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 3/16" Lock Washer Locknut, Hex
1144FA00023 10-32 UNF Class 2B Right Hand 3/8" External Hex Zinc-Plated Steel 15/64" Nylon Insert Locknut, Hex
1148FA00005 10-32 UNF Class 3B Right Hand 3/8" External Hex 18-8 Stainless Steel 9/32" Nylon Insert Locknut, Hex
1182FA00001 10-32 UNF Class 3B Right Hand 3/8" External Hex Cadmium Yellow-Chromate Plated Steel 1/4" Flex-Top Locknut, Hex
1145FA00004 10-32 UNF Class 3B Right Hand 3/8" External Hex Cadmium Yellow-Chromate Plated Steel 9/32" Nylon Insert Locknut, Hex
1185FA00004 10-32 UNF Class 3B Right Hand 3/8" External Hex Silver-Plated 18-8 Stainless Steel 15/64" Flex-Top Locknut, Hex
1163FA00005 12-24 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 11/64" Lock Washer Locknut, Hex
1146FA00008 12-24 UNC Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1149FA00029 12-24 UNC Class 2B Right Hand 7/16" External Hex 316 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1146FA00051 12-24 UNC Class 2B Right Hand 7/16" External Hex Black-Oxide 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1161FA00021 12-24 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 3/16" Lock Washer Locknut, Hex
1144FA00016 12-24 UNC Class 2B Right Hand 7/16" External Hex Zinc-Plated Steel 5/16" Nylon Insert Locknut, Hex
1146FA00021 12-28 UNF Class 2B Right Hand 7/16" External Hex 18-8 Stainless Steel 5/16" Nylon Insert Locknut, Hex
1154FA00006 2 1/2"-12 UN Class 2B Right Hand 4" External Hex Black-Phosphate Steel 2 3/16" Nylon Insert Locknut, Hex
1154FA00005 2 1/4"-12 UN Class 2B Right Hand 3 1/2" External Hex Black-Phosphate Steel 1 15/16" Nylon Insert Locknut, Hex
1138FA00037 2 1/4"-8 UNC Class 2B Right Hand 3 33/64" External Hex Steel 2 13/16" Nylon Insert Locknut, Hex
1138FA00075 2 1/4"-8 UNC Class 2B Right Hand 3 33/64" External Hex Zinc Yellow-Chromate Plated Steel 2 13/16" Nylon Insert Locknut, Hex
1154FA00007 2 3/4"-12 UN Class 2B Right Hand 4" External Hex Black-Phosphate Steel 2 3/16" Nylon Insert Locknut, Hex
1193FA00028 2"-12 UN Class 2B Right Hand 3" External Hex Zinc-Plated Steel 1 23/32" Cotter Pin Locknut, Hex
1154FA00004 2"-12 UN Class 2B Right Hand 3 1/8" External Hex Black-Phosphate Steel 1 43/64" Nylon Insert Locknut, Hex
1138FA00108 2"-12 UN Class 2B Right Hand 3 9/64" External Hex Black-Oxide Steel 2 13/32" Nylon Insert Locknut, Hex
1138FA00035 2"-12 UN Class 2B Right Hand 3 9/64" External Hex Steel 2 13/32" Nylon Insert Locknut, Hex
1138FA00044 2"-12 UN Class 2B Right Hand 3 9/64" External Hex Zinc Yellow-Chromate Plated Steel 2 13/32" Nylon Insert Locknut, Hex
1193FA00027 2"-4 1/2 UNC Class 2B Right Hand 3" External Hex Zinc-Plated Steel 1 23/32" Cotter Pin Locknut, Hex
1138FA00043 2"-4 1/2 UNC Class 2B Right Hand 3 9/64" External Hex Zinc Yellow-Chromate Plated Steel 2 13/32" Nylon Insert Locknut, Hex
1138FA00109 2"-8 UNC Class 2B Right Hand 3 9/64" External Hex Black-Oxide Steel 2 13/32" Nylon Insert Locknut, Hex
1138FA00036 2"-8 UNC Class 2B Right Hand 3 9/64" External Hex Steel 2 13/32" Nylon Insert Locknut, Hex
1146FA00001 2-56 UNC Class 2B Right Hand 1/4" External Hex 18-8 Stainless Steel 9/64" Nylon Insert Locknut, Hex
1183FA00002 2-56 UNC Class 2B Right Hand 1/4" External Hex 18-8 Stainless Steel 5/32" Flex-Top Locknut, Hex
1146FA00045 2-56 UNC Class 2B Right Hand 1/4" External Hex Black-Oxide 18-8 Stainless Steel 9/64" Nylon Insert Locknut, Hex
1144FA00001 2-56 UNC Class 2B Right Hand 1/4" External Hex Zinc-Plated Steel 9/64" Nylon Insert Locknut, Hex
1148FA00001 2-56 UNC Class 3B Right Hand 1/4" External Hex 18-8 Stainless Steel 9/64" Nylon Insert Locknut, Hex
1154FA00010 3"-12 UN Class 2B Right Hand 4 1/2" External Hex Black-Phosphate Steel 2 41/64" Nylon Insert Locknut, Hex
1146FA00002 3-48 UNC Class 2B Right Hand 1/4" External Hex 18-8 Stainless Steel 9/64" Nylon Insert Locknut, Hex
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