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
1167FA00126 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc Yellow-Chromate Plated Steel 31/64" Distorted Thread Locknut; Hex
1138FA00055 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc Yellow-Chromate Plated Steel 41/64" Nylon Insert Locknut, Hex
1193FA00011 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 31/64" Cotter Pin Locknut, Hex
1191FA00013 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 31/64" Cotter Pin Locknut; Hex
1167FA00049 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 31/64" Distorted Thread Locknut; Hex
1144FA00029 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 41/64" Nylon Insert Locknut, Hex
1141FA00012 9/16"-12 UNC Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 41/64" Nylon Insert Locknut; Hex
1146FA00029 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex 18-8 Stainless Steel 41/64" Nylon Insert Locknut, Hex
1149FA00030 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex 316 Stainless Steel 41/64" Nylon Insert Locknut, Hex
1167FA00155 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Black-Oxide Steel 31/64" Distorted Thread Locknut; Hex
1138FA00087 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Black-Oxide Steel 41/64" Nylon Insert Locknut, Hex
1167FA00014 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Cadmium-Plated Steel 31/64" Distorted Thread Locknut; Hex
1167FA00032 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Steel 31/64" Distorted Thread Locknut; Hex
1138FA00020 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Steel 41/64" Nylon Insert Locknut, Hex
1167FA00136 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc Yellow-Chromate Plated Steel 31/64" Distorted Thread Locknut; Hex
1138FA00056 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc Yellow-Chromate Plated Steel 41/64" Nylon Insert Locknut, Hex
1167FA00170 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc-Flake-Coated Steel 31/64" Distorted Thread Locknut; Hex
1193FA00012 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 31/64" Cotter Pin Locknut, Hex
1191FA00014 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 31/64" Cotter Pin Locknut; Hex
1167FA00050 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 31/64" Distorted Thread Locknut; Hex
1144FA00036 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 41/64" Nylon Insert Locknut, Hex
1141FA00013 9/16"-18 UNF Class 2B Right Hand 7/8" External Hex Zinc-Plated Steel 41/64" Nylon Insert Locknut; Hex
1182FA00010 9/16"-18 UNF Class 3B Right Hand 7/8" External Hex Cadmium Yellow-Chromate Plated Steel 11/16" Flex-Top Locknut, Hex
1172FA00011 M10 Metric Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 8 mm Distorted Thread Locknut, Hex
1164FA00010 M10 Metric Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 9.7 mm Lock Washer Locknut, Hex
1172FA00012 M10 Metric Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 10 mm Distorted Thread Locknut, Hex
1147FA00013 M10 Metric Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 10 mm Nylon Insert Locknut, Hex
1147FA00023 M10 Metric Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 10 mm Nylon Insert Locknut, Hex
1147FA00009 M10 Metric Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 11.5 mm Nylon Insert Locknut, Hex
1184FA00003 M10 Metric Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 13 mm Flex-Top Locknut, Hex
1150FA00017 M10 Metric Class 6H Right Hand 17 mm External Hex 316 Stainless Steel 10 mm Nylon Insert Locknut; Hex
1150FA00007 M10 Metric Class 6H Right Hand 17 mm External Hex 316 Stainless Steel 11.5 mm Nylon Insert Locknut; Hex
1184FA00019 M10 Metric Class 6H Right Hand 17 mm External Hex 316 Stainless Steel 13 mm Flex-Top Locknut, Hex
1139FA00005 M10 Metric Class 6H Right Hand 17 mm External Hex Black Corrosion-Resistant-Coated Steel 10 mm Nylon Insert Locknut, Hex
1142FA00047 M10 Metric Class 6H Right Hand 17 mm External Hex Black Corrosion-Resistant-Coated Steel 10 mm Nylon Insert Locknut, Hex
1162FA00012 M10 Metric Class 6H Right Hand 17 mm External Hex Black Zinc Plated Steel 9.7 mm Lock Washer Locknut, Hex
1181FA00006 M10 Metric Class 6H Right Hand 17 mm External Hex Black-Oxide Steel 13 mm Flex-Top Locknut, Hex
1167FA00103 M10 Metric Class 6H Right Hand 17 mm External Hex Black-Phosphate Steel 10 mm Distorted Thread Locknut; Hex
1167FA00104 M10 Metric Class 6H Right Hand 17 mm External Hex Black-Phosphate Steel 10 mm Distorted Thread Locknut; Hex
1181FA00003 M10 Metric Class 6H Right Hand 17 mm External Hex Cadmium-Plated Steel 13 mm Flex-Top Locknut, Hex
1167FA00080 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc Yellow-Chromate Plated Steel 10 mm Distorted Thread Locknut; Hex
1167FA00097 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc Yellow-Chromate Plated Steel 10 mm Distorted Thread Locknut; Hex
1142FA00027 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc Yellow-Chromate Plated Steel 10 mm Nylon Insert Locknut, Hex
1142FA00038 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc Yellow-Chromate Plated Steel 11.5 mm Nylon Insert Locknut, Hex
1176FA00006 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 8 mm Distorted Thread Locknut, Hex
1176FA00007 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 8 mm Distorted Thread Locknut, Hex
1176FA00008 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 8 mm Distorted Thread Locknut, Hex
1162FA00006 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 9.7 mm Lock Washer Locknut, Hex
1168FA00006 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut, Hex
1168FA00016 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut, Hex
1167FA00068 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut; Hex
1167FA00088 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut; Hex
1167FA00115 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut; Hex
1142FA00006 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Nylon Insert Locknut, Hex
1143FA00003 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Nylon Insert Locknut, Hex
1143FA00004 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Nylon Insert Locknut, Hex
1144FA00012 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Nylon Insert Locknut, Hex
1140FA00002 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Nylon Insert Locknut, Hex
1140FA00014 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Nylon Insert Locknut, Hex
1139FA00012 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10 mm Nylon Insert Locknut, Hex
1165FA00010 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 10.7 mm Lock Washer Locknut, Hex
1142FA00054 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 11.5 mm Nylon Insert Locknut, Hex
1139FA00028 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 11.5 mm Nylon Insert Locknut, Hex
1192FA00025 M10 Metric Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 12 mm Cotter Pin Locknut, Hex
1200FA00005 M10 - Class 6H Right Hand 14 mm External Hex Zinc-Plated Steel 8.5 mm Spring-Stop Locknut, Hex
1201FA00004 M10 - Class 6H Right Hand 17 mm External Hex 18-8 Stainless Steel 9.2 mm Spring-Stop Locknut, Hex
1200FA00004 M10 - Class 6H Right Hand 17 mm External Hex Zinc-Plated Steel 8.5 mm Spring-Stop Locknut, Hex
1172FA00013 M12 Metric Class 6H Right Hand 19 mm External Hex 18-8 Stainless Steel 12 mm Distorted Thread Locknut, Hex
1147FA00014 M12 Metric Class 6H Right Hand 19 mm External Hex 18-8 Stainless Steel 12 mm Nylon Insert Locknut, Hex
1147FA00024 M12 Metric Class 6H Right Hand 19 mm External Hex 18-8 Stainless Steel 12 mm Nylon Insert Locknut, Hex
1147FA00010 M12 Metric Class 6H Right Hand 19 mm External Hex 18-8 Stainless Steel 14 mm Nylon Insert Locknut, Hex
1184FA00014 M12 Metric Class 6H Right Hand 19 mm External Hex 18-8 Stainless Steel 15.6 mm Flex-Top Locknut, Hex
1150FA00018 M12 Metric Class 6H Right Hand 19 mm External Hex 316 Stainless Steel 12 mm Nylon Insert Locknut; Hex
1150FA00008 M12 Metric Class 6H Right Hand 19 mm External Hex 316 Stainless Steel 14 mm Nylon Insert Locknut; Hex
1184FA00020 M12 Metric Class 6H Right Hand 19 mm External Hex 316 Stainless Steel 15.6 mm Flex-Top Locknut, Hex
1139FA00006 M12 Metric Class 6H Right Hand 19 mm External Hex Black Corrosion-Resistant-Coated Steel 12 mm Nylon Insert Locknut, Hex
1142FA00048 M12 Metric Class 6H Right Hand 19 mm External Hex Black Corrosion-Resistant-Coated Steel 12 mm Nylon Insert Locknut, Hex
1181FA00007 M12 Metric Class 6H Right Hand 19 mm External Hex Black-Oxide Steel 15.6 mm Flex-Top Locknut, Hex
1167FA00105 M12 Metric Class 6H Right Hand 19 mm External Hex Black-Phosphate Steel 12 mm Distorted Thread Locknut; Hex
1167FA00106 M12 Metric Class 6H Right Hand 19 mm External Hex Black-Phosphate Steel 12 mm Distorted Thread Locknut; Hex
1167FA00107 M12 Metric Class 6H Right Hand 19 mm External Hex Black-Phosphate Steel 12 mm Distorted Thread Locknut; Hex
1181FA00008 M12 Metric Class 6H Right Hand 19 mm External Hex Cadmium-Plated Steel 15.6 mm Flex-Top Locknut, Hex
1196FA00001 M12 Metric Class 6H Right Hand 19 mm External Hex Steel 11.7 mm Steel Insert Locknut, Hex
1192FA00019 M12 Metric Class 6H Right Hand 19 mm External Hex Steel 15 mm Cotter Pin Locknut, Hex
1167FA00081 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc Yellow-Chromate Plated Steel 12 mm Distorted Thread Locknut; Hex
1167FA00098 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc Yellow-Chromate Plated Steel 12 mm Distorted Thread Locknut; Hex
1167FA00118 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc Yellow-Chromate Plated Steel 12 mm Distorted Thread Locknut; Hex
1142FA00028 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc Yellow-Chromate Plated Steel 12 mm Nylon Insert Locknut, Hex
1142FA00039 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc Yellow-Chromate Plated Steel 14 mm Nylon Insert Locknut, Hex
1176FA00009 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut, Hex
1176FA00010 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut, Hex
1176FA00011 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 10 mm Distorted Thread Locknut, Hex
1168FA00007 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Distorted Thread Locknut, Hex
1168FA00017 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Distorted Thread Locknut, Hex
1168FA00020 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Distorted Thread Locknut, Hex
1167FA00069 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Distorted Thread Locknut; Hex
1167FA00089 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Distorted Thread Locknut; Hex
1167FA00116 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Distorted Thread Locknut; Hex
1142FA00007 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Nylon Insert Locknut, Hex
1143FA00005 M12 Metric Class 6H Right Hand 19 mm External Hex Zinc-Plated Steel 12 mm Nylon Insert Locknut, Hex
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