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

Lock Nuts

  • Original price $10.26 - Original price $17.80
    Original price
    $10.26 - $17.80
    $10.26 - $17.80
    Current price $10.26

    1/4"-20 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts LNSS-143

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 5/16"Material: Stainless SteelDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: 18-8Style: Waxed ...

    View full details
    Original price $10.26 - Original price $17.80
    Original price
    $10.26 - $17.80
    $10.26 - $17.80
    Current price $10.26
  • Original price $10.66 - Original price $10.66
    Original price
    $10.66
    $10.66 - $10.66
    Current price $10.66

    1/4"-20 Zinc Plated Grade 5 Steel Coarse Thread Flange Lock Nuts (20 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 9/16"Thickness: 9/32"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: Grade 5Style: ...

    View full details
    Original price $10.66 - Original price $10.66
    Original price
    $10.66
    $10.66 - $10.66
    Current price $10.66
  • Original price $9.15 - Original price $9.15
    Original price
    $9.15
    $9.15 - $9.15
    Current price $9.15

    1/4"-28 Zinc Plated Steel Fine Thread Serrated Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 19/32"Thickness: 1/4"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 28 (Fine)Style: SerratedType: Flang...

    View full details
    Original price $9.15 - Original price $9.15
    Original price
    $9.15
    $9.15 - $9.15
    Current price $9.15
  • Original price $11.26 - Original price $32.55
    Original price
    $11.26 - $32.55
    $11.26 - $32.55
    Current price $11.26

    1/4"-20 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 21/64"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: Grade 2Style: ...

    View full details
    Original price $11.26 - Original price $32.55
    Original price
    $11.26 - $32.55
    $11.26 - $32.55
    Current price $11.26
  • Original price $8.68 - Original price $8.68
    Original price
    $8.68
    $8.68 - $8.68
    Current price $8.68

    1/4"-20 Zinc Grade 2 Nylon Insert Lock Nuts LKNUT-083 (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: Grade 2Style: T...

    View full details
    Original price $8.68 - Original price $8.68
    Original price
    $8.68
    $8.68 - $8.68
    Current price $8.68
  • Original price $10.79 - Original price $12.02
    Original price
    $10.79 - $12.02
    $10.79 - $12.02
    Current price $10.79

    1/4"-28 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts LNS-266

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 21/64"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 28 (Fine)Hardness: Grade 2Style: Ny...

    View full details
    Original price $10.79 - Original price $12.02
    Original price
    $10.79 - $12.02
    $10.79 - $12.02
    Current price $10.79
  • Original price $10.09 - Original price $14.26
    Original price
    $10.09 - $14.26
    $10.09 - $14.26
    Current price $10.09

    1/4"-20 Zinc Plated Grade 2 Steel Coarse Thread Kep Lock Nuts LNS-254

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 3/16"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: Grade 2Style: K...

    View full details
    Original price $10.09 - Original price $14.26
    Original price
    $10.09 - $14.26
    $10.09 - $14.26
    Current price $10.09
  • Original price $12.27 - Original price $13.89
    Original price
    $12.27 - $13.89
    $12.27 - $13.89
    Current price $12.27

    1/4"-20 Zinc Plated Grade 8 Steel Coarse Thread Nylon Insert Lock Nuts LNS8-099

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 21/64"Material: SteelFinish: Yellow ZincDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: Grade 8...

    View full details
    Original price $12.27 - Original price $13.89
    Original price
    $12.27 - $13.89
    $12.27 - $13.89
    Current price $12.27
  • Original price $9.89 - Original price $12.13
    Original price
    $9.89 - $12.13
    $9.89 - $12.13
    Current price $9.89

    1/4"-20 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts LNS-260

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: Grade 2Style: T...

    View full details
    Original price $9.89 - Original price $12.13
    Original price
    $9.89 - $12.13
    $9.89 - $12.13
    Current price $9.89
  • Original price $17.50 - Original price $17.50
    Original price
    $17.50
    $17.50 - $17.50
    Current price $17.50

    1/4"-20 Chrome Plated Steel Coarse Thread Thin Pattern Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: SteelFinish: ChromeDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Style: Thin PatternType...

    View full details
    Original price $17.50 - Original price $17.50
    Original price
    $17.50
    $17.50 - $17.50
    Current price $17.50
  • Original price $17.50 - Original price $17.50
    Original price
    $17.50
    $17.50 - $17.50
    Current price $17.50

    1/4"-28 Chrome Plated Steel Fine Thread Thin Pattern Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: SteelFinish: ChromeDriver Type: 7/16" WrenchThread Size: 28 (Fine)Style: Thin PatternType: ...

    View full details
    Original price $17.50 - Original price $17.50
    Original price
    $17.50
    $17.50 - $17.50
    Current price $17.50
  • Original price $14.31 - Original price $14.31
    Original price
    $14.31
    $14.31 - $14.31
    Current price $14.31

    1/4"-20 Polished 18-8 Stainless Nylon Insert Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 5/16"Material: Stainless SteelFinish: PolishedDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: 1...

    View full details
    Original price $14.31 - Original price $14.31
    Original price
    $14.31
    $14.31 - $14.31
    Current price $14.31
  • Original price $9.64 - Original price $9.64
    Original price
    $9.64
    $9.64 - $9.64
    Current price $9.64

    1/4"-20 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: Stainless SteelDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: 18-8Style: Thin P...

    View full details
    Original price $9.64 - Original price $9.64
    Original price
    $9.64
    $9.64 - $9.64
    Current price $9.64
  • Original price $8.72 - Original price $8.72
    Original price
    $8.72
    $8.72 - $8.72
    Current price $8.72

    1/4"-20 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 1/4"Material: Stainless SteelDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: 18-8Style: Serrate...

    View full details
    Original price $8.72 - Original price $8.72
    Original price
    $8.72
    $8.72 - $8.72
    Current price $8.72
  • Original price $14.31 - Original price $14.31
    Original price
    $14.31
    $14.31 - $14.31
    Current price $14.31

    1/4"-20 x 1/2" Black Chrome Nylon Insert Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 5/16"Material: SteelFinish: Black ChromeDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Style: Nylon Inse...

    View full details
    Original price $14.31 - Original price $14.31
    Original price
    $14.31
    $14.31 - $14.31
    Current price $14.31
  • Original price $14.31 - Original price $14.31
    Original price
    $14.31
    $14.31 - $14.31
    Current price $14.31

    1/4"-28 Black Chrome Plated Steel Fine Thread Nylon Insert Lock Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 5/16"Material: SteelFinish: Black ChromeDriver Type: 7/16" WrenchThread Size: 28 (Fine)Style: Nylon Insert...

    View full details
    Original price $14.31 - Original price $14.31
    Original price
    $14.31
    $14.31 - $14.31
    Current price $14.31
  • Original price $8.94 - Original price $8.94
    Original price
    $8.94
    $8.94 - $8.94
    Current price $8.94

    #8-32 Black Zinc Plated Steel Coarse Thread Nylon Insert Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #8Diameter 2: 13/32"Thickness: 15/64"Material: SteelFinish: Black ZincDriver Type: 7/16" WrenchThread Size: 32 (Coarse)Style: Nylon Inser...

    View full details
    Original price $8.94 - Original price $8.94
    Original price
    $8.94
    $8.94 - $8.94
    Current price $8.94
  • Original price $12.36 - Original price $12.36
    Original price
    $12.36
    $12.36 - $12.36
    Current price $12.36

    1/4"-20 18-8 Stainless Steel Coarse Thread Type C Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: Stainless SteelDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: 18-8Style: Type C...

    View full details
    Original price $12.36 - Original price $12.36
    Original price
    $12.36
    $12.36 - $12.36
    Current price $12.36
  • Original price $11.87 - Original price $11.87
    Original price
    $11.87
    $11.87 - $11.87
    Current price $11.87

    1/4"-28 18-8 Stainless Steel Fine Thread Type C Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: Stainless SteelDriver Type: 7/16" WrenchThread Size: 28 (Fine)Hardness: 18-8Style: Type CTy...

    View full details
    Original price $11.87 - Original price $11.87
    Original price
    $11.87
    $11.87 - $11.87
    Current price $11.87
  • Original price $9.31 - Original price $9.31
    Original price
    $9.31
    $9.31 - $9.31
    Current price $9.31

    1/4"-28 Zinc Plated Grade 2 Steel Fine Thread Kep Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 3/16"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 28 (Fine)Hardness: Grade 2Style: Kep...

    View full details
    Original price $9.31 - Original price $9.31
    Original price
    $9.31
    $9.31 - $9.31
    Current price $9.31
  • Original price $14.59 - Original price $14.59
    Original price
    $14.59
    $14.59 - $14.59
    Current price $14.59

    1/4"-28 Zinc Grade 8 Nylon Insert Lock Nuts LNS8-102 (50 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 21/64"Material: SteelFinish: Yellow ZincDriver Type: 7/16" WrenchThread Size: 28 (Fine)Hardness: Grade 8St...

    View full details
    Original price $14.59 - Original price $14.59
    Original price
    $14.59
    $14.59 - $14.59
    Current price $14.59
  • Original price $9.98 - Original price $9.98
    Original price
    $9.98
    $9.98 - $9.98
    Current price $9.98

    1/4"-20 Nylon Plastic Coarse Thread Lock Nuts LNN-073 (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 1/4"Material: NylonDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Type: Lock NutBox of 10.A lock nut is ...

    View full details
    Original price $9.98 - Original price $9.98
    Original price
    $9.98
    $9.98 - $9.98
    Current price $9.98
  • Original price $10.18 - Original price $10.18
    Original price
    $10.18
    $10.18 - $10.18
    Current price $10.18

    1/4"-28 Zinc Plated Grade 2 Steel Fine Thread Top Lock Nuts LNS-269 (16 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 7/32"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 28 (Fine)Hardness: Grade 2Style: Top...

    View full details
    Original price $10.18 - Original price $10.18
    Original price
    $10.18
    $10.18 - $10.18
    Current price $10.18
  • Original price $13.12 - Original price $13.12
    Original price
    $13.12
    $13.12 - $13.12
    Current price $13.12

    1/4"-20 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts LNS-251 (25 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 1/4"Diameter 2: 1/2"Thickness: 9/32"Material: SteelFinish: ZincDriver Type: 7/16" WrenchThread Size: 20 (Coarse)Hardness: Grade 2Style: C...

    View full details
    Original price $13.12 - Original price $13.12
    Original price
    $13.12
    $13.12 - $13.12
    Current price $13.12