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

Lock Nuts

Filters

$
$
  • 8mm-1.25 Zinc Plated Class 8 Steel Coarse Thread Flange Nylon Insert Lock Nuts
    $12.86 - $12.86
    $12.86
    $12.86 - $12.86
    $12.86

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

    Monster Fastener
    10+ in stock

    Diameter: 8mmDiameter 2: 15mmThickness: 11mmMaterial: SteelFinish: ZincDriver Type: #13 WrenchThread Size: 1.25mm (Coarse)Hardness: Class 8Style: N...

    View full details
    $12.86 - $12.86
    $12.86
    $12.86 - $12.86
    $12.86
  • 12mm-1.75 Zinc Plated Class 8 Steel Coarse Thread Flange Nylon Insert Lock Nuts
    $18.33 - $18.33
    $18.33
    $18.33 - $18.33
    $18.33

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

    Monster Fastener
    10+ in stock

    Diameter: 12mmDiameter 2: 20mmThickness: 16mmMaterial: SteelFinish: ZincDriver Type: #18 WrenchThread Size: 1.75mm (Coarse)Hardness: Class 8Style: ...

    View full details
    $18.33 - $18.33
    $18.33
    $18.33 - $18.33
    $18.33
  • 14mm-2.0 Zinc Plated Class 8 Steel Coarse Thread Flange Nylon Insert Lock Nuts
    $18.56 - $18.56
    $18.56
    $18.56 - $18.56
    $18.56

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

    Monster Fastener
    10+ in stock

    Diameter: 14mmDiameter 2: 24mmThickness: 18mmMaterial: SteelFinish: Yellow ZincDriver Type: #21 WrenchThread Size: 2.0mm (Coarse)Hardness: Class 8S...

    View full details
    $18.56 - $18.56
    $18.56
    $18.56 - $18.56
    $18.56
  • 16mm-2.0 Zinc Plated Class 8 Steel Coarse Thread Flange Nylon Insert Lock Nuts
    $18.36 - $18.36
    $18.36
    $18.36 - $18.36
    $18.36

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

    Monster Fastener
    10+ in stock

    Diameter: 16mmDiameter 2: 27mmThickness: 20mmMaterial: SteelFinish: ZincDriver Type: #24 WrenchThread Size: 2.0mm (Coarse)Hardness: Class 8Style: N...

    View full details
    $18.36 - $18.36
    $18.36
    $18.36 - $18.36
    $18.36
  • 20mm-2.5 Zinc Plated Class 8 Steel Coarse Thread Flange Nylon Insert Lock Nuts
    $23.92 - $23.92
    $23.92
    $23.92 - $23.92
    $23.92

    20mm-2.5 Zinc Plated Class 8 Steel Coarse Thread Flange Nylon Insert Lock Nuts

    Monster Fastener
    10+ in stock

    Diameter: 20mmDiameter 2: 34mmThickness: 25mmMaterial: SteelFinish: Yellow ZincDriver Type: #30 WrenchThread Size: 2.5mm (Coarse)Hardness: Class 8S...

    View full details
    $23.92 - $23.92
    $23.92
    $23.92 - $23.92
    $23.92
  • #8-32 Polished 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $15.93 - $15.93
    $15.93
    $15.93 - $15.93
    $15.93

    #8-32 Polished 18-8 Stainless Nylon Insert Lock Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #8Diameter 2: 3/8"Thickness: 7/16"Material: Stainless SteelFinish: PolishedDriver Type: 11/32" WrenchThread Size: 32 (Coarse)Hardness: 18...

    View full details
    $15.93 - $15.93
    $15.93
    $15.93 - $15.93
    $15.93
  • 1/4"-20 Polished 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $14.31 - $14.31
    $14.31
    $14.31 - $14.31
    $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
    $14.31 - $14.31
    $14.31
    $14.31 - $14.31
    $14.31
  • 5/16"-18 Polished 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $12.82 - $12.82
    $12.82
    $12.82 - $12.82
    $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:...

    View full details
    $12.82 - $12.82
    $12.82
    $12.82 - $12.82
    $12.82
  • 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...

    View full details
    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75
  • 7/16"-14 Polished 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $12.04 - $12.04
    $12.04
    $12.04 - $12.04
    $12.04

    7/16"-14 Polished 18-8 Stainless Nylon Insert Lock Nuts (4 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 7/16"Diameter 2: 23/32"Thickness: 15/32"Material: Stainless SteelFinish: PolishedDriver Type: 5/8" WrenchThread Size: 14 (Coarse)Hardness...

    View full details
    $12.04 - $12.04
    $12.04
    $12.04 - $12.04
    $12.04
  • 1/2"-13 Polished 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $11.48 - $11.48
    $11.48
    $11.48 - $11.48
    $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
    $11.48 - $11.48
    $11.48
    $11.48 - $11.48
    $11.48
  • 5/8"-11 Polished 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $12.42 - $12.42
    $12.42
    $12.42 - $12.42
    $12.42

    5/8"-11 Polished 18-8 Stainless Nylon Insert Lock Nuts (3 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/8"Diameter 2: 1-1/16"Thickness: 3/4"Material: Stainless SteelFinish: PolishedDriver Type: 15/16" WrenchThread Size: 11 (Coarse)Hardness...

    View full details
    $12.42 - $12.42
    $12.42
    $12.42 - $12.42
    $12.42
  • #10-32 Polished 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts
    $15.78 - $15.78
    $15.78
    $15.78 - $15.78
    $15.78

    #10-32 Polished 18-8 Stainless Nylon Insert Lock Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #10Thickness: 1/4"Material: Stainless SteelFinish: PolishedDriver Type: 3/8" WrenchThread Size: 32 (Fine)Hardness: 18-8Nominal Size: #10S...

    View full details
    $15.78 - $15.78
    $15.78
    $15.78 - $15.78
    $15.78
  • 5/16"-24 Polished 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts
    $12.82 - $12.82
    $12.82
    $12.82 - $12.82
    $12.82

    5/16"-24 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: 24 (Fine)Hardness: 1...

    View full details
    $12.82 - $12.82
    $12.82
    $12.82 - $12.82
    $12.82
  • 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-...

    View full details
    $12.75 - $12.75
    $12.75
    $12.75 - $12.75
    $12.75
  • 1/2"-20 Polished 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts
    $11.48 - $11.48
    $11.48
    $11.48 - $11.48
    $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
    $11.48 - $11.48
    $11.48
    $11.48 - $11.48
    $11.48
  • 5/8"-18 Polished 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts
    $12.83 - $12.83
    $12.83
    $12.83 - $12.83
    $12.83

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

    Monster Fastener
    10+ in stock

    Diameter: 5/8"Diameter 2: 1-1/16"Thickness: 3/4"Material: Stainless SteelFinish: PolishedDriver Type: 15/16" WrenchThread Size: 18 (Fine)Hardness: ...

    View full details
    $12.83 - $12.83
    $12.83
    $12.83 - $12.83
    $12.83
  • #8-32 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts
    $9.97 - $9.97
    $9.97
    $9.97 - $9.97
    $9.97

    #8-32 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts (20 pcs.)

    Monster Fastener
    10+ in stock

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

    View full details
    $9.97 - $9.97
    $9.97
    $9.97 - $9.97
    $9.97
  • 1/4"-20 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts
    $9.64 - $9.64
    $9.64
    $9.64 - $9.64
    $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
    $9.64 - $9.64
    $9.64
    $9.64 - $9.64
    $9.64
  • 5/16"-18 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts
    $9.91 - $9.91
    $9.91
    $9.91 - $9.91
    $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...

    View full details
    $9.91 - $9.91
    $9.91
    $9.91 - $9.91
    $9.91
  • 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...

    View full details
    $10.32 - $10.32
    $10.32
    $10.32 - $10.32
    $10.32
  • 1/2"-13 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts
    $12.34 - $12.34
    $12.34
    $12.34 - $12.34
    $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
    $12.34 - $12.34
    $12.34
    $12.34 - $12.34
    $12.34
  • 5/8"-11 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts
    $18.12 - $18.12
    $18.12
    $18.12 - $18.12
    $18.12

    5/8"-11 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts (5 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/8"Diameter 2: 1-1/16"Thickness: 13/32"Material: Stainless SteelDriver Type: 15/16" WrenchThread Size: 11 (Coarse)Hardness: 18-8Style: T...

    View full details
    $18.12 - $18.12
    $18.12
    $18.12 - $18.12
    $18.12
  • 3/4"-10 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts
    $36.22 - $36.22
    $36.22
    $36.22 - $36.22
    $36.22

    3/4"-10 18-8 Stainless Steel Coarse Thread Thin Pattern Lock Nuts (4 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 3/4"Diameter 2: 1-7/32"Thickness: 13/32"Material: Stainless SteelDriver Type: 1-1/16" WrenchThread Size: 10 (Coarse)Hardness: 18-8Style: ...

    View full details
    $36.22 - $36.22
    $36.22
    $36.22 - $36.22
    $36.22
  • #10-32 18-8 Stainless Steel Fine Thread Thin Pattern Lock Nuts
    $10.29 - $10.29
    $10.29
    $10.29 - $10.29
    $10.29

    #10-32 18-8 Stainless Steel Fine Thread Thin Pattern Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #10Diameter 2: 7/16"Thickness: 3/16"Material: Stainless SteelDriver Type: 3/8" WrenchThread Size: 32 (Fine)Hardness: 18-8Style: Thin Patt...

    View full details
    $10.29 - $10.29
    $10.29
    $10.29 - $10.29
    $10.29
  • #8-32 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts
    $8.72 - $8.72
    $8.72
    $8.72 - $8.72
    $8.72

    #8-32 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

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

    View full details
    $8.72 - $8.72
    $8.72
    $8.72 - $8.72
    $8.72
  • #10-24 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts
    $8.49 - $8.49
    $8.49
    $8.49 - $8.49
    $8.49

    #10-24 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #10Diameter 2: 7/16"Thickness: 3/16"Material: Stainless SteelDriver Type: 3/8" WrenchThread Size: 24 (Coarse)Hardness: 18-8Style: Serrate...

    View full details
    $8.49 - $8.49
    $8.49
    $8.49 - $8.49
    $8.49
  • 1/4"-20 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts
    $8.72 - $8.72
    $8.72
    $8.72 - $8.72
    $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
    $8.72 - $8.72
    $8.72
    $8.72 - $8.72
    $8.72
  • 5/16"-18 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts
    $8.74 - $8.74
    $8.74
    $8.74 - $8.74
    $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...

    View full details
    $8.74 - $8.74
    $8.74
    $8.74 - $8.74
    $8.74
  • 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...

    View full details
    $9.20 - $9.20
    $9.20
    $9.20 - $9.20
    $9.20
  • 1/2"-13 18-8 Stainless Steel Coarse Thread Serrated Lock Nuts
    $11.93 - $11.93
    $11.93
    $11.93 - $11.93
    $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
    $11.93 - $11.93
    $11.93
    $11.93 - $11.93
    $11.93
  • #10-32 18-8 Stainless Steel Fine Thread Serrated Lock Nuts
    $9.06 - $9.06
    $9.06
    $9.06 - $9.06
    $9.06

    #10-32 18-8 Stainless Steel Fine Thread Serrated Lock Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #10Diameter 2: 7/16"Thickness: 3/16"Material: Stainless SteelDriver Type: 3/8" WrenchThread Size: 32 (Fine)Hardness: 18-8Style: SerratedT...

    View full details
    $9.06 - $9.06
    $9.06
    $9.06 - $9.06
    $9.06
  • 5/16"-24 18-8 Stainless Steel Fine Thread Serrated Lock Nuts
    $10.02 - $10.02
    $10.02
    $10.02 - $10.02
    $10.02

    5/16"-24 18-8 Stainless Steel Fine Thread Serrated Lock Nuts (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 9/32"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 24 (Fine)Hardness: 18-8Style: Serrate...

    View full details
    $10.02 - $10.02
    $10.02
    $10.02 - $10.02
    $10.02
  • #4-40 18-8 Stainless Steel Coarse Thread Keps Lock Nuts
    $10.38 - $10.38
    $10.38
    $10.38 - $10.38
    $10.38

    #4-40 18-8 Stainless Steel Coarse Thread Keps Lock Nuts (30 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #4Diameter 2: 9/32"Thickness: 1/8"Material: Stainless SteelDriver Type: 1/4" WrenchThread Size: 40 (Coarse)Hardness: 18-8Style: KepType: ...

    View full details
    $10.38 - $10.38
    $10.38
    $10.38 - $10.38
    $10.38
  • #6-32 18-8 Stainless Steel Coarse Thread Keps Lock Nuts
    $10.11 - $10.11
    $10.11
    $10.11 - $10.11
    $10.11

    #6-32 18-8 Stainless Steel Coarse Thread Keps Lock Nuts (25 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: #6Diameter 2: 11/32"Thickness: 5/32"Material: Stainless SteelDriver Type: 5/16" WrenchThread Size: 32 (Coarse)Hardness: 18-8Style: KepTyp...

    View full details
    $10.11 - $10.11
    $10.11
    $10.11 - $10.11
    $10.11
  • #8-32 18-8 Stainless Steel Coarse Thread Keps Lock Nuts
    $9.73 - $9.73
    $9.73
    $9.73 - $9.73
    $9.73

    #8-32 18-8 Stainless Steel Coarse Thread Keps Lock Nuts (20 pcs.)

    Monster Fastener
    10+ in stock

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

    View full details
    $9.73 - $9.73
    $9.73
    $9.73 - $9.73
    $9.73