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Lock Nuts

  • Original price $8.52 - Original price $8.52
    Original price
    $8.52
    $8.52 - $8.52
    Current price $8.52

    5/16"-18 Black Oxide Steel Coarse Thread Nylon Insert Lock Nuts LNZ-78 (8 pcs.)

    Monster Fastener
    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...

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    Original price $8.52 - Original price $8.52
    Original price
    $8.52
    $8.52 - $8.52
    Current price $8.52
  • Original price $36.74 - Original price $36.74
    Original price
    $36.74
    $36.74 - $36.74
    Current price $36.74

    5/16"-18 Black Phosphate Grade 2 Nylon Insert Lock Nuts LNS-411 (452 pcs.)

    Monster Fastener
    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...

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    Original price $36.74 - Original price $36.74
    Original price
    $36.74
    $36.74 - $36.74
    Current price $36.74
  • Original price $10.56 - Original price $18.12
    Original price
    $10.56 - $18.12
    $10.56 - $18.12
    Current price $10.56

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Kep Lock Nuts LNS-281

    Monster Fastener
    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:...

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    Original price $10.56 - Original price $18.12
    Original price
    $10.56 - $18.12
    $10.56 - $18.12
    Current price $10.56
  • Original price $15.45 - Original price $16.20
    Original price
    $15.45 - $16.20
    $15.45 - $16.20
    Current price $15.45

    5/16"-18 Zinc Plated Grade 8 Steel Coarse Thread Nylon Insert Lock Nuts LNS8-105

    Monster Fastener
    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 ...

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    Original price $15.45 - Original price $16.20
    Original price
    $15.45 - $16.20
    $15.45 - $16.20
    Current price $15.45
  • Original price $9.81 - Original price $14.17
    Original price
    $9.81 - $14.17
    $9.81 - $14.17
    Current price $9.81

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts LNS-287

    Monster Fastener
    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:...

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    Original price $9.81 - Original price $14.17
    Original price
    $9.81 - $14.17
    $9.81 - $14.17
    Current price $9.81
  • Original price $10.08 - Original price $22.36
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    $10.08 - $22.36
    $10.08 - $22.36
    Current price $10.08

    5/16"-18 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts LNSS-149

    Monster Fastener
    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...

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    Original price $10.08 - Original price $22.36
    Original price
    $10.08 - $22.36
    $10.08 - $22.36
    Current price $10.08
  • Original price $13.31 - Original price $13.31
    Original price
    $13.31
    $13.31 - $13.31
    Current price $13.31

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

    Monster Fastener
    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:...

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    Original price $13.31 - Original price $13.31
    Original price
    $13.31
    $13.31 - $13.31
    Current price $13.31
  • Original price $11.26 - Original price $12.40
    Original price
    $11.26 - $12.40
    $11.26 - $12.40
    Current price $11.26

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

    Monster Fastener
    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...

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    Original price $11.26 - Original price $12.40
    Original price
    $11.26 - $12.40
    $11.26 - $12.40
    Current price $11.26
  • Original price $18.12 - Original price $18.12
    Original price
    $18.12
    $18.12 - $18.12
    Current price $18.12

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

    Monster Fastener
    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...

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    Original price $18.12 - Original price $18.12
    Original price
    $18.12
    $18.12 - $18.12
    Current price $18.12
  • Original price $10.65 - Original price $10.65
    Original price
    $10.65
    $10.65 - $10.65
    Current price $10.65

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

    Monster Fastener
    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: ...

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    Original price $10.65 - Original price $10.65
    Original price
    $10.65
    $10.65 - $10.65
    Current price $10.65
  • Original price $12.82 - Original price $12.82
    Original price
    $12.82
    $12.82 - $12.82
    Current price $12.82

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

    Monster Fastener
    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:...

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    Original price $12.82 - Original price $12.82
    Original price
    $12.82
    $12.82 - $12.82
    Current price $12.82
  • Original price $9.91 - Original price $9.91
    Original price
    $9.91
    $9.91 - $9.91
    Current price $9.91

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

    Monster Fastener
    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...

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    Original price $9.91 - Original price $9.91
    Original price
    $9.91
    $9.91 - $9.91
    Current price $9.91
  • Original price $8.74 - Original price $8.74
    Original price
    $8.74
    $8.74 - $8.74
    Current price $8.74

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

    Monster Fastener
    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...

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    Original price $8.74 - Original price $8.74
    Original price
    $8.74
    $8.74 - $8.74
    Current price $8.74
  • Original price $11.45 - Original price $11.45
    Original price
    $11.45
    $11.45 - $11.45
    Current price $11.45

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

    Monster Fastener
    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...

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    Original price $11.45 - Original price $11.45
    Original price
    $11.45
    $11.45 - $11.45
    Current price $11.45
  • Original price $12.82 - Original price $12.82
    Original price
    $12.82
    $12.82 - $12.82
    Current price $12.82

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

    Monster Fastener
    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...

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    Original price $12.82 - Original price $12.82
    Original price
    $12.82
    $12.82 - $12.82
    Current price $12.82
  • Original price $12.63 - Original price $12.63
    Original price
    $12.63
    $12.63 - $12.63
    Current price $12.63

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

    Monster Fastener
    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 ...

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    Original price $12.63 - Original price $12.63
    Original price
    $12.63
    $12.63 - $12.63
    Current price $12.63
  • Original price $11.84 - Original price $11.84
    Original price
    $11.84
    $11.84 - $11.84
    Current price $11.84

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts LNS-278 (20 pcs.)

    Monster Fastener
    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: ...

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    Original price $11.84 - Original price $11.84
    Original price
    $11.84
    $11.84 - $11.84
    Current price $11.84
  • Original price $15.42 - Original price $15.42
    Original price
    $15.42
    $15.42 - $15.42
    Current price $15.42

    5/16"-18 Chrome Nylon Insert Lock Nuts LNS-275 (10 pcs.)

    Monster Fastener
    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...

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    Original price $15.42 - Original price $15.42
    Original price
    $15.42
    $15.42 - $15.42
    Current price $15.42
  • Original price $12.42 - Original price $12.42
    Original price
    $12.42
    $12.42 - $12.42
    Current price $12.42

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

    Monster Fastener
    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 ...

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    Original price $12.42 - Original price $12.42
    Original price
    $12.42
    $12.42 - $12.42
    Current price $12.42
  • Original price $10.86 - Original price $10.86
    Original price
    $10.86
    $10.86 - $10.86
    Current price $10.86

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

    Monster Fastener
    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:...

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    Original price $10.86 - Original price $10.86
    Original price
    $10.86
    $10.86 - $10.86
    Current price $10.86
  • Original price $17.39 - Original price $17.39
    Original price
    $17.39
    $17.39 - $17.39
    Current price $17.39

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

    Monster Fastener
    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...

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    Original price $17.39 - Original price $17.39
    Original price
    $17.39
    $17.39 - $17.39
    Current price $17.39
  • Original price $11.40 - Original price $11.40
    Original price
    $11.40
    $11.40 - $11.40
    Current price $11.40

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

    Monster Fastener
    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...

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    Original price $11.40 - Original price $11.40
    Original price
    $11.40
    $11.40 - $11.40
    Current price $11.40
  • Original price $9.81 - Original price $12.19
    Original price
    $9.81 - $12.19
    $9.81 - $12.19
    Current price $9.81

    5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts LNS-284

    Monster Fastener
    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:...

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    Original price $9.81 - Original price $12.19
    Original price
    $9.81 - $12.19
    $9.81 - $12.19
    Current price $9.81
  • Original price $40.18 - Original price $40.18
    Original price
    $40.18
    $40.18 - $40.18
    Current price $40.18

    5/16"-18 Black Phosphate Grade 2 Lock Nuts LNS-412 (509 pcs.)

    Monster Fastener
    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...

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    Original price $40.18 - Original price $40.18
    Original price
    $40.18
    $40.18 - $40.18
    Current price $40.18