Skip to content
Free shipping on orders $250 and up!
Free shipping on orders $250 and up!

Lock Nuts

  • Original price $31.73 - Original price $31.73
    Original price
    $31.73
    $31.73 - $31.73
    Current price $31.73

    1/2"-20 Chrome Plated Steel Fine Thread Thin Pattern Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 11/32"Material: SteelFinish: ChromeDriver Type: 3/4" WrenchThread Size: 20 (Fine)Style: Thin PatternType...

    View full details
    Original price $31.73 - Original price $31.73
    Original price
    $31.73
    $31.73 - $31.73
    Current price $31.73
  • Original price $11.64 - Original price $11.64
    Original price
    $11.64
    $11.64 - $11.64
    Current price $11.64

    1/2"-20 Zinc Plated Grade 8 Steel Fine Thread Nylon Insert Lock Nuts (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 39/64"Material: SteelFinish: Yellow ZincDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: Grade 8S...

    View full details
    Original price $11.64 - Original price $11.64
    Original price
    $11.64
    $11.64 - $11.64
    Current price $11.64
  • Original price $13.92 - Original price $13.92
    Original price
    $13.92
    $13.92 - $13.92
    Current price $13.92

    1/2"-13 Zinc Grade 8 Nylon Insert Lock Nuts (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 39/64"Material: SteelFinish: Yellow ZincDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: Grade ...

    View full details
    Original price $13.92 - Original price $13.92
    Original price
    $13.92
    $13.92 - $13.92
    Current price $13.92
  • Original price $8.79 - Original price $8.79
    Original price
    $8.79
    $8.79 - $8.79
    Current price $8.79

    1/2"-20 Zinc Grade 2 Nylon Thin Lock Nuts LKNUT-119 (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 21/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: Grade 2Style: T...

    View full details
    Original price $8.79 - Original price $8.79
    Original price
    $8.79
    $8.79 - $8.79
    Current price $8.79
  • Original price $36.74 - Original price $36.74
    Original price
    $36.74
    $36.74 - $36.74
    Current price $36.74

    1/2"-13 Black Phosphate Grade 2 Nylon Insert Lock Nuts LNS-417 (117 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 39/64"Material: SteelFinish: Black PhosphateDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: Gr...

    View full details
    Original price $36.74 - Original price $36.74
    Original price
    $36.74
    $36.74 - $36.74
    Current price $36.74
  • Original price $11.05 - Original price $15.34
    Original price
    $11.05 - $15.34
    $11.05 - $15.34
    Current price $11.05

    1/2"-13 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts LNS-353

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 39/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $11.05 - Original price $15.34
    Original price
    $11.05 - $15.34
    $11.05 - $15.34
    Current price $11.05
  • Original price $10.25 - Original price $16.60
    Original price
    $10.25 - $16.60
    $10.25 - $16.60
    Current price $10.25

    1/2"-20 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts LNS-359

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 39/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: Grade 2Style: N...

    View full details
    Original price $10.25 - Original price $16.60
    Original price
    $10.25 - $16.60
    $10.25 - $16.60
    Current price $10.25
  • Original price $11.44 - Original price $15.82
    Original price
    $11.44 - $15.82
    $11.44 - $15.82
    Current price $11.44

    1/2"-13 Zinc Plated Grade 8 Steel Coarse Thread Nylon Insert Lock Nuts LNS8-123

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 39/64"Material: SteelFinish: Yellow ZincDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: Grade ...

    View full details
    Original price $11.44 - Original price $15.82
    Original price
    $11.44 - $15.82
    $11.44 - $15.82
    Current price $11.44
  • Original price $11.01 - Original price $18.86
    Original price
    $11.01 - $18.86
    $11.01 - $18.86
    Current price $11.01

    1/2"-13 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts LNS-356

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 29/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $11.01 - Original price $18.86
    Original price
    $11.01 - $18.86
    $11.01 - $18.86
    Current price $11.01
  • Original price $9.73 - Original price $11.95
    Original price
    $9.73 - $11.95
    $9.73 - $11.95
    Current price $9.73

    1/2"-13 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts LNSS-173

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 7/8"Thickness: 19/32"Material: Stainless SteelDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: 18-8Style: Waxed ...

    View full details
    Original price $9.73 - Original price $11.95
    Original price
    $9.73 - $11.95
    $9.73 - $11.95
    Current price $9.73
  • Original price $31.73 - Original price $31.73
    Original price
    $31.73
    $31.73 - $31.73
    Current price $31.73

    1/2"-13 Chrome Plated Steel Coarse Thread Thin Pattern Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 11/32"Material: SteelFinish: ChromeDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Style: Thin PatternTy...

    View full details
    Original price $31.73 - Original price $31.73
    Original price
    $31.73
    $31.73 - $31.73
    Current price $31.73
  • Original price $13.76 - Original price $13.76
    Original price
    $13.76
    $13.76 - $13.76
    Current price $13.76

    1/2"-13 Zinc Plated Grade 5 Steel Coarse Thread Flange Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 1-1/16"Thickness: 9/16"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: Grade 5Style:...

    View full details
    Original price $13.76 - Original price $13.76
    Original price
    $13.76
    $13.76 - $13.76
    Current price $13.76
  • Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48

    1/2"-13 Polished 18-8 Stainless Nylon Insert Lock Nuts (3 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 19/32"Material: Stainless SteelFinish: PolishedDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness:...

    View full details
    Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48
  • Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48

    1/2"-20 Polished 18-8 Stainless Nylon Insert Lock Nuts (3 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 19/32"Material: Stainless SteelFinish: PolishedDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: 1...

    View full details
    Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48
  • Original price $12.34 - Original price $12.34
    Original price
    $12.34
    $12.34 - $12.34
    Current price $12.34

    1/2"-13 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 11/32"Material: Stainless SteelDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: 18-8Style: Thin...

    View full details
    Original price $12.34 - Original price $12.34
    Original price
    $12.34
    $12.34 - $12.34
    Current price $12.34
  • Original price $11.93 - Original price $11.93
    Original price
    $11.93
    $11.93 - $11.93
    Current price $11.93

    1/2"-13 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 15/32"Material: Stainless SteelDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: 18-8Style: Serr...

    View full details
    Original price $11.93 - Original price $11.93
    Original price
    $11.93
    $11.93 - $11.93
    Current price $11.93
  • Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48

    1/2"-20 Black Chrome Plated Steel Fine Thread Nylon Insert Lock Nuts (3 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 7/8"Thickness: 19/32"Material: SteelFinish: Black ChromeDriver Type: 3/4" WrenchThread Size: 20 (Fine)Style: Nylon Insert...

    View full details
    Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48
  • Original price $16.00 - Original price $16.00
    Original price
    $16.00
    $16.00 - $16.00
    Current price $16.00

    1/2"-13 18-8 Stainless Steel Coarse Thread Type C Lock Nuts (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 7/16"Material: Stainless SteelDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: 18-8Style: Type ...

    View full details
    Original price $16.00 - Original price $16.00
    Original price
    $16.00
    $16.00 - $16.00
    Current price $16.00
  • Original price $9.09 - Original price $9.09
    Original price
    $9.09
    $9.09 - $9.09
    Current price $9.09

    1/2"-20 Zinc Plated Steel Fine Thread Serrated Lock Nuts (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 1-1/32"Thickness: 15/32"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 20 (Fine)Style: SerratedType: Fla...

    View full details
    Original price $9.09 - Original price $9.09
    Original price
    $9.09
    $9.09 - $9.09
    Current price $9.09
  • Original price $11.37 - Original price $11.37
    Original price
    $11.37
    $11.37 - $11.37
    Current price $11.37

    1/2"-20 Zinc Plated Grade 2 Steel Fine Thread Top Lock Nuts LNS-362 (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 29/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: Grade 2Style: T...

    View full details
    Original price $11.37 - Original price $11.37
    Original price
    $11.37
    $11.37 - $11.37
    Current price $11.37
  • Original price $13.59 - Original price $13.59
    Original price
    $13.59
    $13.59 - $13.59
    Current price $13.59

    1/2"-20 18-8 Stainless Nylon Insert Lock Nuts LNSS-176 (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 7/8"Thickness: 19/32"Material: Stainless SteelDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: 18-8Style: Waxed Ny...

    View full details
    Original price $13.59 - Original price $13.59
    Original price
    $13.59
    $13.59 - $13.59
    Current price $13.59
  • Original price $13.31 - Original price $13.31
    Original price
    $13.31
    $13.31 - $13.31
    Current price $13.31

    1/2"-20 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 39/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: Grade 2Style: N...

    View full details
    Original price $13.31 - Original price $13.31
    Original price
    $13.31
    $13.31 - $13.31
    Current price $13.31
  • Original price $14.35 - Original price $14.35
    Original price
    $14.35
    $14.35 - $14.35
    Current price $14.35

    1/2"-13 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 29/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 13 (Coarse)Hardness: Grade 2Style:...

    View full details
    Original price $14.35 - Original price $14.35
    Original price
    $14.35
    $14.35 - $14.35
    Current price $14.35
  • Original price $15.01 - Original price $15.01
    Original price
    $15.01
    $15.01 - $15.01
    Current price $15.01

    1/2"-20 Zinc Plated Grade 2 Steel Fine Thread Top Lock Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/2"Diameter 2: 27/32"Thickness: 29/64"Material: SteelFinish: ZincDriver Type: 3/4" WrenchThread Size: 20 (Fine)Hardness: Grade 2Style: T...

    View full details
    Original price $15.01 - Original price $15.01
    Original price
    $15.01
    $15.01 - $15.01
    Current price $15.01