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

Lock Nuts

  • 7mm-1.0 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts
    $9.74 - $11.18
    $9.74 - $11.18
    $9.74 - $11.18
    $9.74

    7mm-1.0 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 7mmDiameter 2: 12mmThickness: 7.4mmMaterial: SteelFinish: ZincDriver Type: #11 wrenchThread Size: 1.0mm (Coarse)Hardness: Class 8Style: N...

    View full details
    $9.74 - $11.18
    $9.74 - $11.18
    $9.74 - $11.18
    $9.74
  • 8mm-1.25 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts
    $9.40 - $11.83
    $9.40 - $11.83
    $9.40 - $11.83
    $9.40

    8mm-1.25 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 8mmDiameter 2: 15mmThickness: 7.9mmMaterial: SteelFinish: ZincDriver Type: #13 WrenchThread Size: 1.25mm (Coarse)Hardness: Class 8Style: ...

    View full details
    $9.40 - $11.83
    $9.40 - $11.83
    $9.40 - $11.83
    $9.40
  • 12mm-1.75 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts
    $8.13 - $12.64
    $8.13 - $12.64
    $8.13 - $12.64
    $8.13

    12mm-1.75 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 12mmDiameter 2: 22mmThickness: 12mmMaterial: SteelFinish: ZincDriver Type: #19 WrenchThread Size: 1.75mm (Coarse)Hardness: Class 8Style: ...

    View full details
    $8.13 - $12.64
    $8.13 - $12.64
    $8.13 - $12.64
    $8.13
  • 1/4"-20 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $10.45 - $11.29
    $10.45 - $11.29
    $10.45 - $11.29
    $10.45

    1/4"-20 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts LNS-257

    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
    $10.45 - $11.29
    $10.45 - $11.29
    $10.45 - $11.29
    $10.45
  • 5/16"-18 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $9.81 - $12.19
    $9.81 - $12.19
    $9.81 - $12.19
    $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:...

    View full details
    $9.81 - $12.19
    $9.81 - $12.19
    $9.81 - $12.19
    $9.81
  • 3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $10.97 - $14.37
    $10.97 - $14.37
    $10.97 - $14.37
    $10.97

    3/8"-16 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts LNS-311

    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...

    View full details
    $10.97 - $14.37
    $10.97 - $14.37
    $10.97 - $14.37
    $10.97
  • 3/4"-10 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $11.51 - $17.04
    $11.51 - $17.04
    $11.51 - $17.04
    $11.51

    3/4"-10 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts LNS-383

    Monster Fastener
    10+ in stock

    Diameter: 3/4"Diameter 2: 1-7/32"Thickness: 57/64"Material: SteelFinish: ZincDriver Type: 1-1/8" WrenchThread Size: 10 (Coarse)Hardness: Grade 2Sty...

    View full details
    $11.51 - $17.04
    $11.51 - $17.04
    $11.51 - $17.04
    $11.51
  • #10-32 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts
    $10.20 - $11.26
    $10.20 - $11.26
    $10.20 - $11.26
    $10.20

    #10-32 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts LNS-236

    Monster Fastener
    10+ in stock

    Diameter: #10Diameter 2: 7/16"Thickness: 15/64"Material: SteelFinish: ZincDriver Type: 3/8" WrenchThread Size: 32 (Fine)Hardness: Grade 2Style: Nyl...

    View full details
    $10.20 - $11.26
    $10.20 - $11.26
    $10.20 - $11.26
    $10.20
  • 3/4"-16 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts
    $11.91 - $18.73
    $11.91 - $18.73
    $11.91 - $18.73
    $11.91

    3/4"-16 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts LNS-389

    Monster Fastener
    10+ in stock

    Diameter: 3/4"Diameter 2: 1-7/32"Thickness: 57/64"Material: SteelFinish: ZincDriver Type: 1-1/8" WrenchThread Size: 16 (Fine)Hardness: Grade 2Style...

    View full details
    $11.91 - $18.73
    $11.91 - $18.73
    $11.91 - $18.73
    $11.91
  • #10-32 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts
    $9.87 - $16.49
    $9.87 - $16.49
    $9.87 - $16.49
    $9.87

    #10-32 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts LNSS-134

    Monster Fastener
    10+ in stock

    Diameter: #10Thickness: 1/4"Material: Stainless SteelDriver Type: 3/8" WrenchThread Size: 32 (Fine)Hardness: 18-8Style: Waxed Nylon InsertType: Loc...

    View full details
    $9.87 - $16.49
    $9.87 - $16.49
    $9.87 - $16.49
    $9.87
  • 1/2"-13 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $11.97 - $22.11
    $11.97 - $22.11
    $11.97 - $22.11
    $11.97

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

    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
    $11.97 - $22.11
    $11.97 - $22.11
    $11.97 - $22.11
    $11.97
  • 1/4"-20 Zinc Plated Grade 2 Steel Coarse Thread Lock Nuts
    $11.00 - $28.54
    $11.00 - $28.54
    $11.00 - $28.54
    $11.00

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

    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
    $11.00 - $28.54
    $11.00 - $28.54
    $11.00 - $28.54
    $11.00
  • #10-32 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts
    $11.05 - $14.43
    $11.05 - $14.43
    $11.05 - $14.43
    $11.05

    #10-32 Zinc Plated Grade 2 Steel Fine Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: #10Diameter 2: 7/16"Thickness: 15/64"Material: SteelFinish: ZincDriver Type: 3/8" WrenchThread Size: 32 (Fine)Hardness: Grade 2Style: Nyl...

    View full details
    $11.05 - $14.43
    $11.05 - $14.43
    $11.05 - $14.43
    $11.05
  • 7/16"-14 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $9.58 - $12.01
    $9.58 - $12.01
    $9.58 - $12.01
    $9.58

    7/16"-14 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts LNS-335

    Monster Fastener
    10+ in stock

    Diameter: 7/16"Diameter 2: 23/32"Thickness: 15/32"Material: SteelFinish: ZincDriver Type: 11/16" WrenchThread Size: 14 (Coarse)Hardness: Grade 2Sty...

    View full details
    $9.58 - $12.01
    $9.58 - $12.01
    $9.58 - $12.01
    $9.58
  • 1/2"-13 Zinc Plated Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $11.12 - $14.22
    $11.12 - $14.22
    $11.12 - $14.22
    $11.12

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

    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
    $11.12 - $14.22
    $11.12 - $14.22
    $11.12 - $14.22
    $11.12
  • 8mm-1.0 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts
    $9.60 - $16.58
    $9.60 - $16.58
    $9.60 - $16.58
    $9.60

    8mm-1.0 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 8mmDiameter 2: 15mmThickness: 7.9mmMaterial: SteelFinish: Yellow ZincDriver Type: #13 WrenchThread Size: 1.0mm (Fine)Hardness: Class 8Sty...

    View full details
    $9.60 - $16.58
    $9.60 - $16.58
    $9.60 - $16.58
    $9.60
  • 7/16"-14 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $11.34 - $15.91
    $11.34 - $15.91
    $11.34 - $15.91
    $11.34

    7/16"-14 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 7/16"Diameter 2: 23/32"Thickness: 15/32"Material: Stainless SteelDriver Type: 5/8" WrenchThread Size: 14 (Coarse)Hardness: 18-8Style: Wax...

    View full details
    $11.34 - $15.91
    $11.34 - $15.91
    $11.34 - $15.91
    $11.34
  • 5/8"-11 18-8 Stainless Steel Coarse Thread Lock Nuts
    $13.49 - $17.15
    $13.49 - $17.15
    $13.49 - $17.15
    $13.49

    5/8"-11 18-8 Stainless Steel Coarse Thread Lock Nuts LNSS-179

    Monster Fastener
    10+ in stock

    Diameter: 5/8"Diameter 2: 1-3/32"Thickness: 25/32Material: Stainless SteelDriver Type: 15/16" WrenchThread Size: 11 (Coarse)Hardness: 18-8Style: Wa...

    View full details
    $13.49 - $17.15
    $13.49 - $17.15
    $13.49 - $17.15
    $13.49
  • 14mm-2.0 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts
    $9.27 - $13.34
    $9.27 - $13.34
    $9.27 - $13.34
    $9.27

    14mm-2.0 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 14mmDiameter 2: 25mmThickness: 14mmMaterial: SteelFinish: ZincDriver Type: #22 WrenchThread Size: 2.0mm (Coarse)Hardness: Class 8Style: N...

    View full details
    $9.27 - $13.34
    $9.27 - $13.34
    $9.27 - $13.34
    $9.27
  • 16mm-2.0 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts
    $9.06 - $13.22
    $9.06 - $13.22
    $9.06 - $13.22
    $9.06

    16mm-2.0 Zinc Plated Class 8 Steel Coarse Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 16mmDiameter 2: 27mmThickness: 15mmMaterial: SteelFinish: ZincDriver Type: #24 WrenchThread Size: 2.0mm (Coarse)Hardness: Class 8Style: N...

    View full details
    $9.06 - $13.22
    $9.06 - $13.22
    $9.06 - $13.22
    $9.06
  • 10mm-1.25 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts
    $9.51 - $14.43
    $9.51 - $14.43
    $9.51 - $14.43
    $9.51

    10mm-1.25 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 10mmDiameter 2: 19mmThickness: 9.9mmMaterial: SteelFinish: Yellow ZincDriver Type: #17 WrenchThread Size: 1.25mm (Fine)Hardness: Class 8S...

    View full details
    $9.51 - $14.43
    $9.51 - $14.43
    $9.51 - $14.43
    $9.51
  • 12mm-1.5 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts
    $9.39 - $18.34
    $9.39 - $18.34
    $9.39 - $18.34
    $9.39

    12mm-1.5 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 12mmDiameter 2: 22mmThickness: 12mmMaterial: SteelFinish: Yellow ZincDriver Type: #19 WrenchThread Size: 1.5mm (Fine)Hardness: Class 8Sty...

    View full details
    $9.39 - $18.34
    $9.39 - $18.34
    $9.39 - $18.34
    $9.39
  • 14mm-1.5 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts
    $9.49 - $17.16
    $9.49 - $17.16
    $9.49 - $17.16
    $9.49

    14mm-1.5 Zinc Plated Class 8 Steel Fine Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 14mmDiameter 2: 25mmThickness: 14mmMaterial: SteelFinish: Yellow ZincDriver Type: #22 WrenchThread Size: 1.5mm (Fine)Hardness: Class 8Sty...

    View full details
    $9.49 - $17.16
    $9.49 - $17.16
    $9.49 - $17.16
    $9.49
  • 12mm-1.25 Zinc Plated Class 8 Steel Extra Fine Thread Nylon Insert Lock Nuts
    $9.26 - $20.33
    $9.26 - $20.33
    $9.26 - $20.33
    $9.26

    12mm-1.25 Zinc Plated Class 8 Steel Extra Fine Thread Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 12mmDiameter 2: 22mmThickness: 12mmMaterial: SteelFinish: ZincDriver Type: #19 WrenchThread Size: 1.25mm (Extra Fine)Hardness: Class 8Sty...

    View full details
    $9.26 - $20.33
    $9.26 - $20.33
    $9.26 - $20.33
    $9.26