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  • 5/16"-18 18-8 Stainless Steel Coarse Thread Nylon Insert Lock Nuts
    $11.26 - $12.40
    $11.26 - $12.40
    $11.26 - $12.40
    $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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    $11.26 - $12.40
    $11.26 - $12.40
    $11.26 - $12.40
    $11.26
  • 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...

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    $8.74 - $8.74
    $8.74
    $8.74 - $8.74
    $8.74
  • 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...

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    $9.91 - $9.91
    $9.91
    $9.91 - $9.91
    $9.91
  • 5/16"-18 18-8 Stainless Steel Coarse Thread Type C Lock Nuts
    $12.63 - $12.63
    $12.63
    $12.63 - $12.63
    $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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    $12.63 - $12.63
    $12.63
    $12.63 - $12.63
    $12.63
  • 5/16"-18 316 Stainless Steel Coarse Thread Hex Nuts
    $11.88 - $11.88
    $11.88
    $11.88 - $11.88
    $11.88

    5/16"-18 316 Stainless Steel Coarse Thread Hex Nuts (20 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Diameter 2: 9/16"Thickness: 17/64"Material: Stainless SteelDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Hardness: 316Type: Hex Nu...

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    $11.88 - $11.88
    $11.88
    $11.88 - $11.88
    $11.88
  • 5/16"-18 316 Stainless Steel Coarse Thread Lock Nuts
    $11.40 - $11.40
    $11.40
    $11.40 - $11.40
    $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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    $11.40 - $11.40
    $11.40
    $11.40 - $11.40
    $11.40
  • 5/16"-18 Aluminum Coarse Thread Blind Nut Inserts
    $14.53 - $14.53
    $14.53
    $14.53 - $14.53
    $14.53

    5/16"-18 Aluminum Coarse Thread Blind Nut Inserts (6 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Material: AluminumThread Size: 18 (Coarse)Type: Blind Nut InsertBox of 6.A blind nut insert, also known as a rivet nut, is a one-pie...

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    $14.53 - $14.53
    $14.53
    $14.53 - $14.53
    $14.53
  • 5/16"-18 Black Chrome Plated Steel Coarse Thread Nylon Insert Lock Nuts
    $12.82 - $12.82
    $12.82
    $12.82 - $12.82
    $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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    $12.82 - $12.82
    $12.82
    $12.82 - $12.82
    $12.82
  • 5/16"-18 Black Chrome Plated Grade 5 Steel Coarse Thread Hex Nuts
    $12.00 - $12.00
    $12.00
    $12.00 - $12.00
    $12.00

    5/16"-18 Black Chrome Plated Grade 5 Steel Coarse Thread Hex Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Material: SteelFinish: Black ChromeThread Size: 18 (Coarse)Hardness: Grade 5Type: Hex NutBox of 8.Hex nuts are used to secure and fa...

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    $12.00 - $12.00
    $12.00
    $12.00 - $12.00
    $12.00
  • 5/16"-18 Black Chrome Plated Steel Coarse Thread Acorn Nuts
    Sold out
    $16.23 - $16.23
    $16.23
    $16.23 - $16.23
    $16.23

    5/16"-18 Black Chrome Plated Steel Coarse Thread Acorn Nuts (6 pcs.)

    Monster Fastener
    Out of stock

    Diameter: 5/16"Thickness: 7/16"Material: SteelFinish: Black ChromeDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Shape: AcornType: Cap NutBox of 6...

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    $16.23 - $16.23
    $16.23
    $16.23 - $16.23
    $16.23
    Sold out
  • 5/16"-18 Black Oxide Steel Coarse Thread Hex Nuts
    $8.40 - $8.40
    $8.40
    $8.40 - $8.40
    $8.40

    5/16"-18 Black Oxide Steel Coarse Thread Hex Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Thickness: 11/32"Material: SteelFinish: Black OxideDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Type: Hex NutBox of 15.Hex nuts a...

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    $8.40 - $8.40
    $8.40
    $8.40 - $8.40
    $8.40
  • 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
  • 5/16"-18 Black Phosphate Coarse Thread Extruded Long U Nuts
    $17.87 - $17.87
    $17.87
    $17.87 - $17.87
    $17.87

    5/16"-18 Black Phosphate Coarse Thread Extruded Long U Nuts (16 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Material: PhosphateThread Size: 18 (Coarse)Style: Long UType: Speed NutBox of 16.

    $17.87 - $17.87
    $17.87
    $17.87 - $17.87
    $17.87
  • 5/16"-18 Black Phosphate Coarse Thread Extruded Regular U Nuts
    $14.92 - $14.92
    $14.92
    $14.92 - $14.92
    $14.92

    5/16"-18 Black Phosphate Coarse Thread Extruded Regular U Nuts (16 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Material: PhosphateThread Size: 18 (Coarse)Style: Regular UType: Speed NutBox of 16.

    $14.92 - $14.92
    $14.92
    $14.92 - $14.92
    $14.92
  • 5/16"-18 Black Phosphate Coarse Thread Extruded Long U Nuts
    $12.76 - $12.76
    $12.76
    $12.76 - $12.76
    $12.76

    5/16"-18 Black Phosphate Extruded Long U Nuts (10 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Material: PhosphateThread Size: 18 (Coarse)Style: Long UType: Speed NutBox of 10.

    $12.76 - $12.76
    $12.76
    $12.76 - $12.76
    $12.76
  • 5/16"-18 Black Phosphate Coarse Thread Extruded Regular U Nuts
    $12.04 - $12.04
    $12.04
    $12.04 - $12.04
    $12.04

    5/16"-18 Black Phosphate Extruded Regular U Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Material: PhosphateThread Size: 18 (Coarse)Style: Regular UType: Speed NutBox of 12.

    $12.04 - $12.04
    $12.04
    $12.04 - $12.04
    $12.04
  • 5/16"-18 Black Phosphate Grade 2 Steel Coarse Thread Lock Nuts
    $40.18 - $40.18
    $40.18
    $40.18 - $40.18
    $40.18

    5/16"-18 Black Phosphate Grade 2 Lock Nuts (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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    $40.18 - $40.18
    $40.18
    $40.18 - $40.18
    $40.18
  • 5/16"-18 Black Phosphate Grade 2 Steel Coarse Thread Nylon Insert Lock Nuts
    $36.74 - $36.74
    $36.74
    $36.74 - $36.74
    $36.74

    5/16"-18 Black Phosphate Grade 2 Nylon Insert Lock Nuts (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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    $36.74 - $36.74
    $36.74
    $36.74 - $36.74
    $36.74
  • 5/16"-18 Brass Coarse Thread Finished Hex Nuts
    $12.79 - $12.79
    $12.79
    $12.79 - $12.79
    $12.79

    5/16"-18 Brass Coarse Thread Finished Hex Nuts (12 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Thickness: 9/32"Material: BrassDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Type: Hex NutBox of 12.Hex nuts are used to secure an...

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    $12.79 - $12.79
    $12.79
    $12.79 - $12.79
    $12.79
  • 5/16"-18 Brass Coarse Thread Finished Hex Nuts
    $13.15 - $13.15
    $13.15
    $13.15 - $13.15
    $13.15

    5/16"-18 Brass Coarse Thread Finished Hex Nuts (15 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Thickness: 9/32"Material: BrassDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Type: Hex NutBox of 15.Hex nuts are used to secure an...

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    $13.15 - $13.15
    $13.15
    $13.15 - $13.15
    $13.15
  • 5/16"-18 Brass Coarse Thread Hex Machine Screw Nuts
    $43.44 - $43.44
    $43.44
    $43.44 - $43.44
    $43.44

    5/16"-18 Brass Coarse Thread Hex Machine Screw Nuts (100 pcs)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Thickness: 7/32"Material: BrassDriver Type: 1/2" WrenchThread Size: 18 (Coarse)Type: Hex NutBox of 100.Hex nuts are used to secure a...

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    $43.44 - $43.44
    $43.44
    $43.44 - $43.44
    $43.44
  • 5/16"-18 Cast Zinc Coarse Thread Breakaway Nuts
    $25.77 - $25.77
    $25.77
    $25.77 - $25.77
    $25.77

    5/16"-18 Cast Zinc Coarse Thread Breakaway Nuts (8 pcs.)

    Monster Fastener
    10+ in stock

    Diameter: 5/16"Material: ZincDriver Type: 5/8" DriverThread Size: 18 (Coarse)Style: BreakawayType: Security NutBox of 8.

    $25.77 - $25.77
    $25.77
    $25.77 - $25.77
    $25.77
  • 5/16"-18 Chrome Plated Steel Coarse Thread Nylon Insert Lock Nuts
    $15.42 - $15.42
    $15.42
    $15.42 - $15.42
    $15.42

    5/16"-18 Chrome 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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    $15.42 - $15.42
    $15.42
    $15.42 - $15.42
    $15.42
  • 5/16"-18 Chrome Plated Grade 2 / A307 Steel Coarse Thread Acorn Cap Nuts
    $27.72 - $27.72
    $27.72
    $27.72 - $27.72
    $27.72

    5/16"-18 Chrome Plated Grade 2 / A307 Steel Coarse Thread Acorn Cap Nuts

    Monster Fastener
    10+ in stock

    Box of 15.A closed nut having a dome-like cap over the back, protruding part of the engaged screw or bolt. Also called an acorn nut.

    $27.72 - $27.72
    $27.72
    $27.72 - $27.72
    $27.72