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    59 Products
    About Pipe and Fittings
    industrial info icon

    Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

    Low-Pressure Brass and Bronze Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Low-Pressure Brass and Bronze Threaded Pipe Locknuts.
    Use these locknuts in low-pressure flow applications. They have good corrosion resistance.
    Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
    NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
    DIN 431—Locknuts that meet DIN 431 comply with international standards for pipe locknut dimensions.
    NSF/ANSI 61—Locknuts rated for use with drinking water meet NSF/ANSI 61 safety standards.
    For Pipe
    For
    Flange
    Pipe
    Size
    Hex Wd.
    Lg.
    Max. Pressure
    @ Temp.
    For Use With
    Pressure
    Class
    Material
    Schedule
    Material
    Class
    Material
    Specs. Met
    Food Industry
    Std.
    Each
    NPSL Female
    1/8
    		1/2"3/16"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K12100000
    1/4
    		21/32"1/4"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K1220000
    3/8
    		49/64"9/32"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K1230000
    1/2
    		31/32"5/16"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K1240000
    3/4
    		1 15/64"11/32"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K1250000
    1
    		1 1/2"3/8"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K12600000
    1 1/4
    		1 55/64"27/64"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K12700000
    1 1/2
    		2 1/8"15/32"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K12800000
    2
    		2 5/8"17/32"200 psi @ 72° FAir, Drinking Water, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B1.20.1, ASME B16.15, ASTM A584NSF/ANSI 61
    		4429K12900000
    2 1/2
    		3 3/4"9/16"200 psi @ 72° FAir, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B16.15—4429K46400000
    3
    		4 1/4"5/8"200 psi @ 72° FAir, Natural Gas, Oil125
    		Brass40
    		Brass150
    		BrassASME B16.15—4429K46500000
     
    BSPP Female
    1/8
    		19 mm6 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N110000
    1/4
    		22 mm6 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N120000
    3/8
    		27 mm7 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N130000
    1/2
    		32 mm8 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N140000
    3/4
    		36 mm9 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N150000
    1
    		46 mm10 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N1600000
    1 1/4
    		55 mm11 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N1700000
    1 1/2
    		60 mm12 mmNot RatedAir, Natural Gas, Oil—Brass—Brass—BrassDIN 431—3538N1800000
     

    High-Pressure Brass Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. High-Pressure Brass Threaded Pipe Locknuts.
    These locknuts have the strength to handle high-pressure applications. They are brass for good corrosion resistance.
    Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
    NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
    NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.
    Pipe
    Size
    Hex
    Wd.
    Lg.
    Max. Pressure
    @ Temp.
    For Use With
    Material
    Fabrication
    Each
    NPSL Female
    1/8
    		11/16"3/16"1,000 psi @ 72° FAir, Natural Gas, Oil, WaterBrassMachined50785K14100000
    1/4
    		7/8"1/4"1,000 psi @ 72° FAir, Natural Gas, Oil, WaterBrassMachined50785K1420000
    3/8
    		1"5/16"1,000 psi @ 72° FAir, Natural Gas, Oil, WaterBrassMachined50785K1430000
    1/2
    		1 1/8"1/4"1,000 psi @ 72° FAir, Natural Gas, Oil, WaterBrassMachined50785K1440000
    3/4
    		1 3/8"21/64"1,000 psi @ 72° FAir, Natural Gas, Oil, WaterBrassMachined50785K1450000
     
    NPTF Female
    1
    		1 9/16"3/8"1,000 psi @ 72° FAir, Natural Gas, Oil, WaterBrassMachined50785K14600000
     

    Low-Pressure Plated Brass Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Low-Pressure Plated Brass Threaded Pipe Locknuts.
    Used in low-pressure pipe lines, these brass locknuts have a plating that makes them shiny and improves corrosion resistance.
    Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
    Chrome-Plated Brass—Chrome-plated brass locknuts are shinier and withstand corrosion better than nickel-plated brass locknuts.
    For Pipe
    Pipe
    Size
    Hex
    Wd.
    Lg.
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    For Use With
    Pressure
    Class
    Material
    Schedule
    Material
    Specs.
    Met
    Each
    NPT Female
    1/8
    		7/8"1/4"200 psi @ 72° F125 psi @ 400° FAir, Natural Gas, Oil, Steam, Water125
    		Chrome-Plated Brass40
    		BrassASTM B4569162K181000000
    1/4
    		7/8"1/4"200 psi @ 72° F125 psi @ 400° FAir, Natural Gas, Oil, Steam, Water125
    		Chrome-Plated Brass40
    		BrassASTM B4569162K18200000
    3/8
    		1"9/32"200 psi @ 72° F125 psi @ 400° FAir, Natural Gas, Oil, Steam, Water125
    		Chrome-Plated Brass40
    		BrassASTM B4569162K18300000
    1/2
    		1 9/32"5/16"200 psi @ 72° F125 psi @ 400° FAir, Natural Gas, Oil, Steam, Water125
    		Chrome-Plated Brass40
    		BrassASTM B4569162K18400000
    3/4
    		1 1/2"9/32"200 psi @ 72° F125 psi @ 400° FAir, Natural Gas, Oil, Steam, Water125
    		Chrome-Plated Brass40
    		BrassASTM B4569162K18500000
    1
    		1 3/4"11/32"200 psi @ 72° F125 psi @ 400° FAir, Natural Gas, Oil, Steam, Water125
    		Chrome-Plated Brass40
    		BrassASTM B4569162K18600000
     

    Brass Hex Panel Nuts

    Image of Product. Front orientation. Panel Nuts. Brass Hex Panel Nuts.
    These panel nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. They can be fastened with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels.
    NPSM ThreadAbout NPSM Thread
    Nickel-Plated Brass—Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.
    Pipe
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Brass
    1/8
    		5/8"1/8"191862A21200000
    1/8
    		5/8"3/16"191862A2150000
     
    Nickel-Plated Brass
    1/8
    		1/2"1/8"1091862A5110000
     
    UNEF ThreadAbout UNEF Thread
    Nickel-Plated Brass—Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Brass
    1/4"-32
    		5/16"5/64"1091862A21600000
    1/4"-32
    		3/8"3/32"1091862A2180000
    5/16"-32
    		7/16"7/64"1091862A2230000
    3/8"-32
    		5/8"3/32"191862A2250000
    7/16"-28
    		5/8"3/32"191862A2280000
    15/32"-32
    		5/8"3/32"191862A2360000
     
    Nickel-Plated Brass
    1/4"-32
    		5/16"5/64"1091862A5160000
    1/4"-32
    		3/8"3/32"1091862A5150000
    5/16"-32
    		7/16"7/64"1091862A5180000
    3/8"-32
    		1/2"3/32"1091862A5210000
    7/16"-28
    		5/8"3/32"191862A5230000
    15/32"-32
    		9/16"5/64"1091862A5250000
    15/32"-32
    		9/16"3/32"1091862A5260000
    1/2"-28
    		5/8"1/8"1091862A5270000
     
    UNS ThreadAbout UNS Thread
    Nickel-Plated Brass—Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Brass
    5/8"-27
    		3/4"1/8"191862A24300000
     
    Nickel-Plated Brass
    1/4"-40
    		5/16"1/16"1091862A5170000
    5/8"-27
    		3/4"1/8"191862A5290000
     

    Conduit Locknuts

    Secure threaded conduit fittings to knockouts. These locknuts keep fittings from shifting, so connections stay stable and wiring is protected inside electrical boxes or enclosures.
    For Metal and Plastic Fittings
    Image of Product. Front orientation. Conduit and Fittings. Conduit Locknuts, For Metal and Plastic Fittings.
    Nickel-Plated Brass—The plating enhances the corrosion resistance of brass, adding a durable protective finish.
    Thread
    Size
    Specs.
    Met
    Each
    Metric Thread
     
    Nickel-Plated Brass
    M12
    		EN 602049147T1700000
    M16
    		EN 602049147T180000
    M20
    		EN 602049147T190000
    M25
    		EN 602049147T1110000
    M32
    		EN 602049147T210000
    M40
    		EN 602049147T2200000
    M50
    		EN 602049147T2300000
    M63
    		EN 602049147T11200000
     
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