When your project needs a fastener that won't back down, our Grade C Hex All Metal Cone Locknuts deliver. Built for extreme vibration, they provide a secure hold standard nuts can't match.
Prevailing Torque Cone Design
Featuring a distinct cone-shaped top with distorted threads, these locknuts create massive metal-to-metal friction. The all-metal build withstands high heat, while the specialized wax coating prevents thread galling and ensures a smooth, accurate installation.
High-Strength Resistance
Forged from heat-treated, high-carbon steel, Grade C locknuts are specifically rated for heavy-duty Grade 8 bolts. The premium zinc-plated finish actively guards against rust and corrosion for long-lasting reliability.
Key Applications
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Heavy Machinery
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Automotive Chassis
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Structural Steel
Trust FMW Fasteners for uncompromising quality on your toughest jobs.
1/4-20 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720002 Price: 1 to 999 for $0.13 / 1,000+ for $0.06
5/16-18 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720003 Price: 1 to 999 for $0.16 / 1,000+ for $0.07
5/16-24 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720004 Price: 1 to 999 for $0.21 / 1,000+ for $0.10
3/8-16 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720005 Price: 1 to 999 for $0.21 / 1,000+ for $0.10
3/8-24 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720006 Price: 1 to 999 for $0.30 / 1,000+ for $0.14
7/16-14 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720007 Price: 1 to 499 for $0.49 / 500+ for $0.22
7/16-20 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720008 Price: 1 to 499 for $0.55 / 500+ for $0.25
1/2-20 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720009 Price: 1 to 499 for $0.60 / 500+ for $0.27
1/2-13 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720010 Price: 1 to 499 for $0.41 / 500+ for $0.19
9/16-12 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720011 Price: 1 to 499 for $1.17 / 500+ for $0.53
9/16-18 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720012 Price: 1 to 499 for $1.39 / 500+ for $0.63
5/8-18 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720013 Price: 1 to 199 for $1.06 / 200+ for $0.48
5/8-11 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720014 Price: 1 to 199 for $0.84 / 200+ for $0.38
3/4-16 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720015 Price: 1 to 199 for $1.99 / 200+ for $0.89
3/4-10 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720016 Price: 1 to 199 for $1.27 / 200+ for $0.57
7/8-9 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720017 Price: 1 to 149 for $2.81 / 150+ for $1.26
7/8-14 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720018 Price: 1 to 149 for $4.02 / 150+ for $1.81
1-8 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720019 Price: 1 to 99 for $4.23 / 100+ for $1.90
1-14 Grade C Hex All Metal Cone Locknut Zinc CR+3 Plated and Waxed
Item Number: 1720020 Price: 1 to 99 for $6.11 / 100+ for $2.74CURRENT SELECTIONS
