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    17 Products
    About Pipe and Fittings
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    Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

    Low-Pressure Aluminum Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Low-Pressure Aluminum Threaded Pipe Locknuts.
    In addition to being lightweight, these aluminum locknuts offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.
    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.
    For Pipe
    For
    Flange
    Pipe
    Size
    Hex
    Wd.
    Lg.
    Max. Pressure
    @ Temp.
    For Use With
    Pressure
    Class
    Material
    Schedule
    Material
    Class
    Material
    Each
    NPSL Female
    1/4
    		15/16"5/32"150 psi @ 72° FAir, Oil, Water150
    		6061 Aluminum40
    		Aluminum125
    		Aluminum44705K41200000
    3/8
    		1 1/8"3/16"150 psi @ 72° FAir, Oil, Water150
    		6061 Aluminum40
    		Aluminum125
    		Aluminum44705K4130000
    1/2
    		1 3/8"1/4"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K4140000
    3/4
    		1 5/8"5/16"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K41500000
    1
    		2"3/8"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K41600000
    1 1/4
    		2 3/8"7/16"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K41700000
    1 1/2
    		2 3/4"1/2"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K41800000
    2
    		3 3/8"5/8"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K41900000
    2 1/2
    		3 3/4"3/4"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K33100000
    3
    		4 1/2"15/16"150 psi @ 72° FAir, Oil, Water150
    		356 Aluminum40
    		Aluminum125
    		Aluminum44705K33200000
     

    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.
    Aluminum—One-third the weight of steel that's the same size. Aluminum is also nonmagnetic to prevent electrical interference in nearby equipment.
    Pipe
    Size
    Each
    NPSM Thread
     
    Aluminum
    1/2
    		9147T12300000
    3/4
    		9147T1240000
    1
    		9147T1250000
    1 1/4
    		9147T1260000
    1 1/2
    		9147T12700000
    2
    		9147T12800000
     
    Conduit Locknut and Reaming Pliers
    Image of Product. Front orientation. Conduit Locknut and Reaming Pliers.
    Tighten locknuts and ream both the inside and outside of conduit with one tool. These pliers have combination jaws with multiple curved openings to work with 1/2" (13 mm) and 3/4" (19 mm) EMT conduit locknuts and 1/2" rigid conduit locknuts and flat nuts. Their machined nose fits snugly into locknut wings. They can also pull wire and fish tape, thanks to their serrated jaws. Pliers have plastic grips for comfort.
    Jaw
    Overall
    Lg.
    Max.
    Cap.
    Lg.
    Opening
    Style
    Texture
    Material
    For Tape
    Shape
    With Wire
    Cutter
    Each
    Combination Jaw and Cushion Grip
    7 3/4"1 3/8"1 5/8"ManualSerratedSteel
    		FlatNo4642N11000000
     
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