Skip to content
Free shipping on all orders!
Free shipping on all orders!

Lock Nuts

  • Original price $4.26 - Original price $4.26
    Original price
    $4.26
    $4.26 - $4.26
    Current price $4.26

    5/16"-18 Black Oxide Steel Coarse Thread Nylon Insert Lock Nuts (8 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: Black OxideDriver Type: 9/16" WrenchThread Size: 18 (Coarse)Style: Nylon In...

    View full details
    Original price $4.26 - Original price $4.26
    Original price
    $4.26
    $4.26 - $4.26
    Current price $4.26
  • Original price $5.73 - Original price $5.73
    Original price
    $5.73
    $5.73 - $5.73
    Current price $5.73

    5/16"-18 18-8 Stainless Steel Coarse Thread Keps Lock Nuts (10 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 11/32"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 18-8Style: KepT...

    View full details
    Original price $5.73 - Original price $5.73
    Original price
    $5.73
    $5.73 - $5.73
    Current price $5.73
  • Original price $18.37 - Original price $18.37
    Original price
    $18.37
    $18.37 - $18.37
    Current price $18.37

    5/16"-18 Black Phosphate Grade 2 Nylon Insert Lock Nuts (452 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: Black PhosphateDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Gr...

    View full details
    Original price $18.37 - Original price $18.37
    Original price
    $18.37
    $18.37 - $18.37
    Current price $18.37
  • Original price $5.28 - Original price $9.06
    Original price
    $5.28 - $9.06
    $5.28 - $9.06
    Current price $5.28

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Kep Lock Nuts

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 17/64"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $5.28 - Original price $9.06
    Original price
    $5.28 - $9.06
    $5.28 - $9.06
    Current price $5.28
  • Original price $7.73 - Original price $8.1
    Original price
    $7.73 - $8.1
    $7.73 - $8.1
    Current price $7.73

    5/16"-18 Zinc Plated Grade 8 Steel Coarse Thread Nylon Insert Lock Nuts

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: Yellow ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade ...

    View full details
    Original price $7.73 - Original price $8.1
    Original price
    $7.73 - $8.1
    $7.73 - $8.1
    Current price $7.73
  • Original price $4.91 - Original price $7.09
    Original price
    $4.91 - $7.09
    $4.91 - $7.09
    Current price $4.91

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 17/64"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $4.91 - Original price $7.09
    Original price
    $4.91 - $7.09
    $4.91 - $7.09
    Current price $4.91
  • Original price $5.04 - Original price $11.18
    Original price
    $5.04 - $11.18
    $5.04 - $11.18
    Current price $5.04

    5/16"-18 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 11/32"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 18-8Style: Waxe...

    View full details
    Original price $5.04 - Original price $11.18
    Original price
    $5.04 - $11.18
    $5.04 - $11.18
    Current price $5.04
  • Original price $6.66 - Original price $6.66
    Original price
    $6.66
    $6.66 - $6.66
    Current price $6.66

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $6.66 - Original price $6.66
    Original price
    $6.66
    $6.66 - $6.66
    Current price $6.66
  • Original price $5.63 - Original price $6.2
    Original price
    $5.63 - $6.2
    $5.63 - $6.2
    Current price $5.63

    5/16"-18 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 11/32"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 18-8Style: Waxe...

    View full details
    Original price $5.63 - Original price $6.2
    Original price
    $5.63 - $6.2
    $5.63 - $6.2
    Current price $5.63
  • Original price $9.06 - Original price $9.06
    Original price
    $9.06
    $9.06 - $9.06
    Current price $9.06

    5/16"-18 Chrome Plated Steel Coarse Thread Thin Pattern Lock Nuts (10 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 1/4"Material: SteelFinish: ChromeDriver Type: 9/16" WrenchThread Size: 18 (Coarse)Style: Thin PatternTyp...

    View full details
    Original price $9.06 - Original price $9.06
    Original price
    $9.06
    $9.06 - $9.06
    Current price $9.06
  • Original price $5.33 - Original price $5.33
    Original price
    $5.33
    $5.33 - $5.33
    Current price $5.33

    5/16"-18 Zinc Plated Grade 5 Steel Coarse Thread Flange Lock Nuts (15 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 11/16"Thickness: 3/8"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade 5Style: ...

    View full details
    Original price $5.33 - Original price $5.33
    Original price
    $5.33
    $5.33 - $5.33
    Current price $5.33
  • Original price $6.41 - Original price $6.41
    Original price
    $6.41
    $6.41 - $6.41
    Current price $6.41

    5/16"-18 Polished 18-8 Stainless Nylon Insert Lock Nuts (6 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 11/32"Material: Stainless SteelFinish: PolishedDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness:...

    View full details
    Original price $6.41 - Original price $6.41
    Original price
    $6.41
    $6.41 - $6.41
    Current price $6.41
  • Original price $4.96 - Original price $4.96
    Original price
    $4.96
    $4.96 - $4.96
    Current price $4.96

    5/16"-18 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts (10 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 1/4"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 18-8Style: Thin P...

    View full details
    Original price $4.96 - Original price $4.96
    Original price
    $4.96
    $4.96 - $4.96
    Current price $4.96
  • Original price $4.37 - Original price $4.37
    Original price
    $4.37
    $4.37 - $4.37
    Current price $4.37

    5/16"-18 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts (8 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 9/32"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 18-8Style: Serra...

    View full details
    Original price $4.37 - Original price $4.37
    Original price
    $4.37
    $4.37 - $4.37
    Current price $4.37
  • Original price $6.41 - Original price $6.41
    Original price
    $6.41
    $6.41 - $6.41
    Current price $6.41

    5/16"-18 Black Chrome Nylon Insert Lock Nuts (6 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 11/32"Material: SteelFinish: Black ChromeDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Style: Nylon In...

    View full details
    Original price $6.41 - Original price $6.41
    Original price
    $6.41
    $6.41 - $6.41
    Current price $6.41
  • Original price $6.32 - Original price $6.32
    Original price
    $6.32
    $6.32 - $6.32
    Current price $6.32

    5/16"-18 18-8 Stainless Steel Coarse Thread Type C Lock Nuts (12 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 9/32"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 18-8Style: Type ...

    View full details
    Original price $6.32 - Original price $6.32
    Original price
    $6.32
    $6.32 - $6.32
    Current price $6.32
  • Original price $5.92 - Original price $5.92
    Original price
    $5.92
    $5.92 - $5.92
    Current price $5.92

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts (20 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 9/32"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade 2Style: ...

    View full details
    Original price $5.92 - Original price $5.92
    Original price
    $5.92
    $5.92 - $5.92
    Current price $5.92
  • Original price $7.71 - Original price $7.71
    Original price
    $7.71
    $7.71 - $7.71
    Current price $7.71

    5/16"-18 Chrome Nylon Insert Lock Nuts (10 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: ChromeDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Style: Nylon InsertTy...

    View full details
    Original price $7.71 - Original price $7.71
    Original price
    $7.71
    $7.71 - $7.71
    Current price $7.71
  • Original price $6.21 - Original price $6.21
    Original price
    $6.21
    $6.21 - $6.21
    Current price $6.21

    5/16"-18 Zinc Grade 8 Nylon Insert Lock Nuts (10 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: Yellow ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade ...

    View full details
    Original price $6.21 - Original price $6.21
    Original price
    $6.21
    $6.21 - $6.21
    Current price $6.21
  • Original price $5.43 - Original price $5.43
    Original price
    $5.43
    $5.43 - $5.43
    Current price $5.43

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Kep Lock Nuts (16 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 17/64"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $5.43 - Original price $5.43
    Original price
    $5.43
    $5.43 - $5.43
    Current price $5.43
  • Original price $8.7 - Original price $8.7
    Original price
    $8.7
    $8.7 - $8.7
    Current price $8.7

    5/16"-18 Chrome Plated Steel Coarse Thread Nylon Insert Lock Nuts (10 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: ChromeDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Style: Nylon InsertTy...

    View full details
    Original price $8.7 - Original price $8.7
    Original price
    $8.7
    $8.7 - $8.7
    Current price $8.7
  • Original price $5.7 - Original price $5.7
    Original price
    $5.7
    $5.7 - $5.7
    Current price $5.7

    5/16"-18 316 Stainless Steel Coarse Thread Lock Nuts (15 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 316Type: Lock NutBox of 15.A loc...

    View full details
    Original price $5.7 - Original price $5.7
    Original price
    $5.7
    $5.7 - $5.7
    Current price $5.7
  • Original price $4.91 - Original price $6.1
    Original price
    $4.91 - $6.1
    $4.91 - $6.1
    Current price $4.91

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 23/64"Material: SteelFinish: ZincDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $4.91 - Original price $6.1
    Original price
    $4.91 - $6.1
    $4.91 - $6.1
    Current price $4.91
  • Original price $20.09 - Original price $20.09
    Original price
    $20.09
    $20.09 - $20.09
    Current price $20.09

    5/16"-18 Black Phosphate Grade 2 Lock Nuts (509 pcs.)

    centurytool.store
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 17/64"Material: SteelFinish: Black PhosphateDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: Gr...

    View full details
    Original price $20.09 - Original price $20.09
    Original price
    $20.09
    $20.09 - $20.09
    Current price $20.09