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Lock Nuts

  • 5/16"-18 Black Oxide Steel Coarse Thread Nylon Insert Lock Nuts
    $8.52 - $8.52
    $8.52
    $8.52 - $8.52
    $8.52

    5/16"-18 Black Oxide Steel Coarse Thread Nylon Insert Lock Nuts (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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    $8.52 - $8.52
    $8.52
    $8.52 - $8.52
    $8.52
  • 3/8"-16 Zinc Plated Grade 8 Steel Coarse Thread Nylon Insert Lock Nuts
    $11.95 - $18.25
    $11.95 - $18.25
    $11.95 - $18.25
    $11.95

    3/8"-16 Zinc Plated Grade 8 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: SteelFinish: Yellow ZincDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: Grade...

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    $11.95 - $18.25
    $11.95 - $18.25
    $11.95 - $18.25
    $11.95
  • 3/8"-24 18-8 Stainless Steel Fine Thread Serrated Lock Nuts
    $10.38 - $10.38
    $10.38
    $10.38 - $10.38
    $10.38

    3/8"-24 18-8 Stainless Steel Fine Thread Serrated Lock Nuts (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 11/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 24 (Fine)Hardness: 18-8Style: Serrate...

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    $10.38 - $10.38
    $10.38
    $10.38 - $10.38
    $10.38
  • 3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts
    $13.17 - $13.17
    $13.17
    $13.17 - $13.17
    $13.17

    3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts (16 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 21/64"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: Grade 2Style...

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    $13.17 - $13.17
    $13.17
    $13.17 - $13.17
    $13.17
  • 3/8"-24 Zinc Plated Steel Fine Thread Serrated Lock Nuts
    $8.91 - $8.91
    $8.91
    $8.91 - $8.91
    $8.91

    3/8"-24 Zinc Plated Steel Fine Thread Serrated Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 9/16"Thickness: 11/32"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 24 (Fine)Style: SerratedType: Flan...

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    $8.91 - $8.91
    $8.91
    $8.91 - $8.91
    $8.91
  • 3/8"-16 Black Phosphate Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $36.74 - $36.74
    $36.74
    $36.74 - $36.74
    $36.74

    3/8"-16 Black Phosphate Grade 2 Nylon Insert Lock Nuts (286 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: SteelFinish: Black PhosphateDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: G...

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    $36.74 - $36.74
    $36.74
    $36.74 - $36.74
    $36.74
  • 3/8"-24 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts
    $11.46 - $15.33
    $11.46 - $15.33
    $11.46 - $15.33
    $11.46

    3/8"-24 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 24 (Fine)Hardness: Grade 2Style: ...

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    $11.46 - $15.33
    $11.46 - $15.33
    $11.46 - $15.33
    $11.46
  • 3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Kep Lock Nuts
    $11.15 - $23.68
    $11.15 - $23.68
    $11.15 - $23.68
    $11.15

    3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Kep Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 3/8"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: Grade 2Style: ...

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    $11.15 - $23.68
    $11.15 - $23.68
    $11.15 - $23.68
    $11.15
  • 3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts
    $9.92 - $17.60
    $9.92 - $17.60
    $9.92 - $17.60
    $9.92

    3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 21/64"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: Grade 2Style...

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    $9.92 - $17.60
    $9.92 - $17.60
    $9.92 - $17.60
    $9.92
  • $10.25 - $18.73
    $10.25 - $18.73
    $10.25 - $18.73
    $10.25

    3/8"-16 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: 18-8Style: Wax...

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    $10.25 - $18.73
    $10.25 - $18.73
    $10.25 - $18.73
    $10.25
  • 3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $11.26 - $12.61
    $11.26 - $12.61
    $11.26 - $12.61
    $11.26

    3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: Grade 2Style...

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    $11.26 - $12.61
    $11.26 - $12.61
    $11.26 - $12.61
    $11.26
  • 3/8"-16 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $11.26 - $14.56
    $11.26 - $14.56
    $11.26 - $14.56
    $11.26

    3/8"-16 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: 18-8Style: Wax...

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    $11.26 - $14.56
    $11.26 - $14.56
    $11.26 - $14.56
    $11.26
  • 5/16"-18 Chrome Plated Steel Coarse Thread Thin Pattern Lock Nuts
    $18.12 - $18.12
    $18.12
    $18.12 - $18.12
    $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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    $18.12 - $18.12
    $18.12
    $18.12 - $18.12
    $18.12
  • 5/16"-24 Chrome Plated Steel Fine Thread Thin Pattern Lock Nuts
    $18.12 - $18.12
    $18.12
    $18.12 - $18.12
    $18.12

    5/16"-24 Chrome Plated Steel Fine 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: 24 (Fine)Style: Thin PatternType:...

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    $18.12 - $18.12
    $18.12
    $18.12 - $18.12
    $18.12
  • 3/8"-16 Zinc Plated Grade 5 Steel Coarse Thread Flange Lock Nuts
    $11.09 - $11.09
    $11.09
    $11.09 - $11.09
    $11.09

    3/8"-16 Zinc Plated Grade 5 Steel Coarse Thread Flange Lock Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 13/16"Thickness: 7/16"Material: SteelFinish: ZincDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: Grade 5Style:...

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    $11.09 - $11.09
    $11.09
    $11.09 - $11.09
    $11.09
  • 3/8"-16 Polished 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75

    3/8"-16 Polished 18-8 Stainless Nylon Insert Lock Nuts (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 7/16"Material: Stainless SteelFinish: PolishedDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: 1...

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    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75
  • 3/8"-24 Polished 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts
    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75

    3/8"-24 Polished 18-8 Stainless Nylon Insert Lock Nuts (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 7/16"Material: Stainless SteelFinish: PolishedDriver Type: 9/16" WrenchThread Size: 24 (Fine)Hardness: 18-...

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    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75
  • 3/8"-16 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts
    $10.32 - $10.32
    $10.32
    $10.32 - $10.32
    $10.32

    3/8"-16 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 9/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: 18-8Style: Thin P...

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    $10.32 - $10.32
    $10.32
    $10.32 - $10.32
    $10.32
  • 3/8"-16 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts
    $9.20 - $9.20
    $9.20
    $9.20 - $9.20
    $9.20

    3/8"-16 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 11/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: 18-8Style: Serra...

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    $9.20 - $9.20
    $9.20
    $9.20 - $9.20
    $9.20
  • 3/8"-16 18-8 Stainless Steel Coarse Thread Keps Lock Nuts
    $12.22 - $12.22
    $12.22
    $12.22 - $12.22
    $12.22

    3/8"-16 18-8 Stainless Steel Coarse Thread Keps Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 13/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: 18-8Style: KepTy...

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    $12.22 - $12.22
    $12.22
    $12.22 - $12.22
    $12.22
  • 3/8"-16 Black Chrome Plated Steel Coarse Thread Nylon Insert Lock Nuts
    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75

    3/8"-16 Black Chrome Nylon Insert Lock Nuts (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: SteelFinish: Black ChromeDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Style: Nylon I...

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    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75
  • 3/8"-24 Black Chrome Plated Steel Fine Thread Nylon Insert Lock Nuts
    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75

    3/8"-24 Black Chrome Plated Steel Fine Thread Nylon Insert Lock Nuts (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 21/32"Thickness: 15/32"Material: SteelFinish: Black ChromeDriver Type: 9/16" WrenchThread Size: 24 (Fine)Style: Nylon Ins...

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    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75
  • 3/8"-16 18-8 Stainless Steel Coarse Thread Type C Lock Nuts
    $13.47 - $13.47
    $13.47
    $13.47 - $13.47
    $13.47

    3/8"-16 18-8 Stainless Steel Coarse Thread Type C Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 11/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 16 (Coarse)Hardness: 18-8Style: Type ...

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    $13.47 - $13.47
    $13.47
    $13.47 - $13.47
    $13.47
  • 3/8"-24 18-8 Stainless Steel Fine Thread Type C Lock Nuts
    $13.35 - $13.35
    $13.35
    $13.35 - $13.35
    $13.35

    3/8"-24 18-8 Stainless Steel Fine Thread Type C Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/8"Diameter 2: 5/8"Thickness: 11/32"Material: Stainless SteelDriver Type: 9/16" WrenchThread Size: 24 (Fine)Hardness: 18-8Style: Type CT...

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    $13.35 - $13.35
    $13.35
    $13.35 - $13.35
    $13.35