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
1139FA00026 M6 Metric Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 8 mm Nylon Insert Locknut, Hex
1201FA00002 M6 - Class 6H Right Hand 10 mm External Hex 18-8 Stainless Steel 5.1 mm Spring-Stop Locknut, Hex
1200FA00002 M6 - Class 6H Right Hand 10 mm External Hex Zinc-Plated Steel 5.1 mm Spring-Stop Locknut, Hex
1172FA00008 M7 Metric Class 6H Right Hand 11 mm External Hex 18-8 Stainless Steel 5.5 mm Distorted Thread Locknut, Hex
1176FA00003 M7 Metric Class 6H Right Hand 11 mm External Hex Zinc-Plated Steel 5.5 mm Distorted Thread Locknut, Hex
1142FA00021 M7 Metric Class 6H Right Hand 11 mm External Hex Zinc-Plated Steel 7.5 mm Nylon Insert Locknut, Hex
1172FA00009 M8 Metric Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 6.4 mm Distorted Thread Locknut, Hex
1172FA00010 M8 Metric Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 6.4 mm Distorted Thread Locknut, Hex
1147FA00004 M8 Metric Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 8 mm Nylon Insert Locknut, Hex
1147FA00022 M8 Metric Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 8 mm Nylon Insert Locknut, Hex
1164FA00009 M8 Metric Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 8.5 mm Lock Washer Locknut, Hex
1147FA00008 M8 Metric Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 9.5 mm Nylon Insert Locknut, Hex
1184FA00002 M8 Metric Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 10.4 mm Flex-Top Locknut, Hex
1150FA00016 M8 Metric Class 6H Right Hand 13 mm External Hex 316 Stainless Steel 8 mm Nylon Insert Locknut; Hex
1150FA00006 M8 Metric Class 6H Right Hand 13 mm External Hex 316 Stainless Steel 9.5 mm Nylon Insert Locknut; Hex
1184FA00018 M8 Metric Class 6H Right Hand 13 mm External Hex 316 Stainless Steel 10.4 mm Flex-Top Locknut, Hex
1139FA00004 M8 Metric Class 6H Right Hand 13 mm External Hex Black Corrosion-Resistant-Coated Steel 8 mm Nylon Insert Locknut, Hex
1142FA00046 M8 Metric Class 6H Right Hand 13 mm External Hex Black Corrosion-Resistant-Coated Steel 8 mm Nylon Insert Locknut, Hex
1162FA00011 M8 Metric Class 6H Right Hand 13 mm External Hex Black Zinc Plated Steel 8.5 mm Lock Washer Locknut, Hex
1181FA00005 M8 Metric Class 6H Right Hand 13 mm External Hex Black-Oxide Steel 10.4 mm Flex-Top Locknut, Hex
1167FA00101 M8 Metric Class 6H Right Hand 13 mm External Hex Black-Phosphate Steel 8 mm Distorted Thread Locknut; Hex
1167FA00102 M8 Metric Class 6H Right Hand 13 mm External Hex Black-Phosphate Steel 8 mm Distorted Thread Locknut; Hex
1181FA00002 M8 Metric Class 6H Right Hand 13 mm External Hex Cadmium-Plated Steel 10.4 mm Flex-Top Locknut, Hex
1167FA00079 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc Yellow-Chromate Plated Steel 8 mm Distorted Thread Locknut; Hex
1167FA00117 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc Yellow-Chromate Plated Steel 8 mm Distorted Thread Locknut; Hex
1142FA00026 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc Yellow-Chromate Plated Steel 8 mm Nylon Insert Locknut, Hex
1142FA00037 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc Yellow-Chromate Plated Steel 9.5 mm Nylon Insert Locknut, Hex
1176FA00004 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 6.5 mm Distorted Thread Locknut, Hex
1176FA00005 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 6.5 mm Distorted Thread Locknut, Hex
1168FA00005 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Distorted Thread Locknut, Hex
1167FA00067 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Distorted Thread Locknut; Hex
1167FA00087 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Distorted Thread Locknut; Hex
1143FA00002 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Nylon Insert Locknut, Hex
1142FA00005 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Nylon Insert Locknut, Hex
1144FA00011 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Nylon Insert Locknut, Hex
1140FA00001 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Nylon Insert Locknut, Hex
1139FA00011 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8 mm Nylon Insert Locknut, Hex
1162FA00005 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8.5 mm Lock Washer Locknut, Hex
1165FA00009 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 8.8 mm Lock Washer Locknut, Hex
1192FA00024 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 9.5 mm Cotter Pin Locknut, Hex
1142FA00053 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 9.5 mm Nylon Insert Locknut, Hex
1139FA00027 M8 Metric Class 6H Right Hand 13 mm External Hex Zinc-Plated Steel 9.5 mm Nylon Insert Locknut, Hex
1200FA00003 M8 - Class 6H Right Hand 12 mm External Hex Zinc-Plated Steel 7.3 mm Spring-Stop Locknut, Hex
1201FA00003 M8 - Class 6H Right Hand 13 mm External Hex 18-8 Stainless Steel 7.2 mm Spring-Stop Locknut, Hex
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