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    54 Products
    About Hex Nuts
    industrial info icon

    Choose a hex nut with the right profile, material, and strength for your application.

    Heavy-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.
    Extreme-Strength Steel
    These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    PTFE-Coated Steel—A slippery PTFE coating prevents these nuts from becoming stuck during installation. They resist rust in wet and outdoor environments, however they're not recommended for prolonged exposure since the coating can wear off.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Blue PTFE-Coated Steel
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		2590212A300000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		1090212A40000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		1090212A50000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		590212A60000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		590212A70000000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		190212A81000000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		190212A81100000
    1 3/8"-8
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASTM A194
    		190212A81200000
    1 1/2"-8
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		190212A81300000
    1 3/4"-8
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		190212A81500000
    1 7/8"-8
    		2 15/16"1 27/32"ASTM Grade 2H
    		ASTM A194
    		190212A81600000
    2"-8
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		190212A81700000
     

    Hex Nuts

    The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Image of Specification. Front orientation. Hex Nuts. Hex Nuts.
    PTFE-Coated 18-8 Stainless Steel—A slippery PTFE coating prevents these nuts from becoming stuck during installation. The coating resists rust in wet and outdoor environments and can handle occasional exposure to mild acids and chemicals without corroding.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    PTFE-Coated 18-8 Stainless Steel
    6-32
    		1/4"7/64"5094600A100000000
    8-32
    		11/32"1/8"5094600A20000000
    10-24
    		3/8"1/8"5094600A40000000
    10-32
    		3/8"1/8"5094600A30000000
    1/4"-20
    		7/16"3/16"2594600A50000000
     
    Plastic
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Image of Specification. Front orientation. Hex Nuts. Hex Nuts.
    High-Temperature Chemical-Resistant PTFE—The most chemical-resistant plastic nuts we offer, these stand up to the widest range of harsh acids, bases, solvents, and corrosive cleaners. They also keep their shape and strength at higher temperatures than most plastics.
    Temp.
    Thread Size
    Wd.
    Ht.
    Min.
    Max.,
    ° F
    Certificate Type
    Color
    Pkg.
    Qty.
    Pkg.
    High-Temperature Chemical-Resistant PTFE
    2-56
    		3/16"1/16"Not Rated500—White190059A11200000
    4-40
    		1/4"3/32"Not Rated500—White190059A0050000
    6-32
    		5/16"1/8"Not Rated500—White190059A0070000
    8-32
    		5/16"1/8"Not Rated500—White190059A0090000
    10-24
    		3/8"1/8"Not Rated500—White190059A0110000
    10-32
    		3/8"9/64"Not Rated500—White190059A1110000
    1/4"-20
    		7/16"7/32"Not Rated500Material Certificate
    		White190059A0290000
    5/16"-18
    		1/2"17/64"Not Rated500—White190059A0300000
    3/8"-16
    		9/16"21/64"Not Rated500—White190059A0310000
    3/8"-24
    		9/16"21/64"Not Rated500—White190059A1130000
    1/2"-13
    		3/4"7/16"Not Rated500—White190059A0330000
    1/2"-20
    		3/4"7/16"Not Rated500—White190059A11400000
    5/8"-11
    		7/8"35/64"Not Rated500—White190059A03500000
    3/4"-10
    		1 1/8"41/64"Not Rated500—White190059A03600000
    M3 × 0.5 mm5.32 mm2.2 mmNot Rated500—White190059A1150000
    M4 × 0.7 mm6.78 mm2.9 mmNot Rated500—White190059A1160000
    M5 × 0.8 mm7.78 mm4.4 mmNot Rated500—White190059A1170000
    M6 × 1 mm9.78 mm4.9 mmNot Rated500—White190059A1180000
    M8 × 1.25 mm12.73 mm6.4 mmNot Rated500—White190059A1190000
     

    Extreme-Pressure Stainless Steel Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Extreme-Pressure Stainless Steel Threaded Pipe Locknuts.
    With the strength to handle extreme pressures, these locknuts can be used to connect equipment in hydraulic fluid lines.
    Locknuts have a gasket, which creates a tight seal without the need for PTFE tape; screw one onto the male end of a fitting for extra holding power.
    303 Stainless Steel—303 stainless steel locknuts have very good corrosion resistance.
    303
    Stainless Steel
    Pipe
    Size
    Dash
    Size
    Hex
    Wd.
    Lg.
    Gasket
    Material
    Max. Pressure
    @ Temp.
    For Use With
    Temp. Range,
    ° F
    Each
    NPT Female
    1/8
    		025/8"3/16"PTFE
    		10,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K37000000
    1/4
    		043/4"9/32"PTFE
    		10,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K3800000
    3/8
    		067/8"9/32"PTFE
    		10,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K3900000
    1/2
    		081 1/8"19/64"PTFE
    		10,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K4400000
    3/4
    		121 5/16"19/64"PTFE
    		5,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K45000000
    1
    		161 5/8"25/64"PTFE
    		5,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K46000000
    1 1/4
    		202"25/64"PTFE
    		5,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K47000000
    1 1/2
    		242 1/4"25/64"PTFE
    		3,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K48000000
    2
    		322 3/4"27/64"PTFE
    		3,000 psi @ 72° FAir, Hydraulic Fluid, Natural Gas, Oil, Water-300 to 5005530K49000000
     

    Extreme-Pressure Steel Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Extreme-Pressure Steel Threaded Pipe Locknuts.
    The strongest steel locknuts we offer, these can withstand extreme-pressure applications.
    Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
    For Pipe
    For
    Flange
    Pipe
    Size
    Dash
    Size
    Hex
    Wd.
    Lg.
    Gasket
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    For Use With
    Temp. Range,
    ° F
    Material
    Fabrication
    Schedule
    Material
    Class
    Material
    Each
    NPT Female
    1/8
    		025/8"3/16"PTFE
    		10,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K14000000
    1/4
    		043/4"9/32"PTFE
    		10,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K1600000
    3/8
    		067/8"9/32"PTFE
    		10,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K1800000
    1/2
    		081 1/8"19/64"PTFE
    		10,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K1900000
    3/4
    		121 5/16"19/64"PTFE
    		5,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K2100000
    1
    		161 5/8"25/64"PTFE
    		5,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K2300000
    1 1/4
    		202"25/64"PTFE
    		5,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K2500000
    1 1/2
    		242 1/4"25/64"PTFE
    		3,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K2700000
    2
    		322 3/4"27/64"PTFE
    		3,000 psi @ 72° F5,000 psi @ 500° FAir, Hydraulic Fluid, Natural Gas, Oil, Steam, Water-100 to 500Zinc-Yellow-Chromate-Plated SteelMachinedXXH
    		Steel1500
    		Steel5530K29000000
     
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