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    123 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 Stainless Steel Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Low-Pressure Stainless Steel Threaded Pipe Locknuts.
    Use these locknuts in a low-pressure pipe line.
    Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
    NPTF (Dryseal) threads and NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
    304 Stainless Steel—304 stainless steel locknuts have very good corrosion resistance.
    316 Stainless Steel—316 stainless steel locknuts have excellent corrosion resistance.
    ANSI/MSS SP-114—Locknuts that meet ANSI/MSS SP-114 adhere to high-quality standards for heat treating, material thickness, and marking.
    DIN 431—Locknuts that meet DIN 431 comply with international standards for pipe locknut dimensions.
    For Pipe
    For
    Flange
    304
    Stainless Steel
    316
    Stainless Steel
    Pipe
    Size
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    For Use With
    Pressure
    Class
    Fabrication
    Schedule
    Material
    Class
    Material
    Specs. Met
    Each
    Each
    NPSL Female
    1/8
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58100000———0
    1/8
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67100000
    1/4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K5820000———0
    1/4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K6720000
    3/8
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58300000———0
    3/8
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67300000
    1/2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58400000———0
    1/2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67400000
    3/4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58500000———0
    3/4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67500000
    1
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58600000———0
    1
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67600000
    1 1/4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58700000———0
    1 1/4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67700000
    1 1/2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58800000———0
    1 1/2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67800000
    2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K58900000———0
    2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K67900000
    2 1/2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K59100000———0
    2 1/2
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K68100000
    3
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K59200000———0
    3
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K68200000
    4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		304 Stainless Steel, 304/304L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A3514464K59300000———0
    4
    		300 psi @ 72° F150 psi @ 350° FAir, Natural Gas, Oil, Steam, Water150
    		Heat Treated40
    		316 Stainless Steel, 316/316L Stainless Steel150
    		304 Stainless Steel, 304/304L Stainless SteelANSI/MSS SP-114, ASTM A351———04452K68300000
     
    BSPP Female
    1/8
    		Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water———304 Stainless Steel, 304/304L Stainless Steel—304 Stainless Steel, 304/304L Stainless SteelDIN 4319027N1010000———0
    1/4
    		Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water———304 Stainless Steel, 304/304L Stainless Steel—304 Stainless Steel, 304/304L Stainless SteelDIN 4319027N1020000———0
    3/8
    		Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water———304 Stainless Steel, 304/304L Stainless Steel—304 Stainless Steel, 304/304L Stainless SteelDIN 4319027N1030000———0
    1/2
    		Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water———304 Stainless Steel, 304/304L Stainless Steel—304 Stainless Steel, 304/304L Stainless SteelDIN 4319027N1040000———0
    5/8
    		Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water———304 Stainless Steel, 304/304L Stainless Steel—304 Stainless Steel, 304/304L Stainless SteelDIN 4319027N1050000———0
    3/4
    		Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water———304 Stainless Steel, 304/304L Stainless Steel—304 Stainless Steel, 304/304L Stainless SteelDIN 4319027N1060000———0
    1
    		Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water———304 Stainless Steel, 304/304L Stainless Steel—304 Stainless Steel, 304/304L Stainless SteelDIN 4319027N10700000———0
     

    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
     

    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.
    304 Stainless Steel—The choice for wet and outdoor environments.
    316 Stainless Steel—Our most corrosion-resistant fittings won't degrade when exposed to salt water and harsh chemicals.
    Pipe
    Size
    Thread
    Size
    Specs. Met
    Each
    NPSL Thread
     
    316 Stainless Steel
    1/2
    		—C-UL Listed, UL Listed7513K317000000
    3/4
    		—C-UL Listed, UL Listed7513K31800000
    1
    		—C-UL Listed, UL Listed7513K31900000
    1 1/4
    		—C-UL Listed, UL Listed7513K41100000
    1 1/2
    		—C-UL Listed, UL Listed7513K41200000
    2
    		—C-UL Listed, UL Listed7513K41300000
    3
    		—C-UL Listed, UL Listed7513K15200000
    4
    		—C-UL Listed, UL Listed7513K15300000
     
    PG Thread
     
    304 Stainless Steel
    —PG-7
    		—7513K1410000
    —PG-9
    		—7513K14200000
    —PG-11
    		—7513K1430000
    —PG-13.5
    		—7513K14400000
    —PG-16
    		—7513K14500000
    —PG-21
    		—7513K14600000
    —PG-29
    		—7513K14700000
    —PG-36
    		—7513K14800000
     
    Metric Thread
     
    304 Stainless Steel
    —M8
    		—7513K1310000
    —M12
    		—7513K13300000
    —M16
    		—7513K13400000
    —M20
    		—7513K13500000
    —M25
    		—7513K13600000
    —M32
    		—7513K13700000
    —M40
    		—7513K13800000
    —M50
    		—7513K13900000
    —M63
    		—7513K14900000
     
    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
     

    Stainless Steel Hex Panel Nuts

    Image of Product. Front orientation. Panel Nuts. Stainless Steel Hex Panel Nuts.
    All of these stainless steel panel nuts have some chemical resistance. They can be fastened with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they are extremely thin for use in tight spaces such as electrical panels.
    NPSM ThreadAbout NPSM Thread
    18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic.
    316 Stainless Steel—316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.
    Pipe
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/8
    		9/16"1/8"191862A53100000
    1/8
    		5/8"1/8"191862A3060000
    1/8
    		5/8"3/16"191862A3100000
    1/4
    		11/16"1/4"191862A5320000
    1/4
    		11/16"9/32"191862A5340000
    3/8
    		13/16"17/64"191862A5350000
    1/2
    		1"21/64"191862A5380000
    1/2
    		1"11/32"191862A53900000
     
    316 Stainless Steel
    1/8
    		5/8"1/8"194177A1200000
    1/8
    		5/8"3/16"194177A1300000
    1/4
    		11/16"1/4"194177A1400000
    1/4
    		11/16"17/64"194177A15000000
    3/8
    		13/16"17/64"194177A17000000
    1/2
    		1"21/64"194177A21000000
     
    UNEF ThreadAbout UNEF Thread
    18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic.
    Black-Oxide 18-8 Stainless Steel—Black-oxide 18-8 stainless steel nuts have a dark surface color.
    316 Stainless Steel—316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-32
    		5/16"5/64"1091862A31100000
    1/4"-32
    		3/8"3/32"1091862A3130000
    5/16"-32
    		3/8"3/32"191862A5430000
    5/16"-32
    		7/16"7/64"1091862A31600000
    5/16"-32
    		1/2"17/64"191862A5440000
    3/8"-32
    		1/2"3/32"191862A5450000
    3/8"-32
    		9/16"21/64"191862A5460000
    3/8"-32
    		5/8"3/32"191862A3180000
    7/16"-28
    		5/8"3/32"191862A3200000
    7/16"-28
    		11/16"3/8"191862A5480000
    15/32"-32
    		9/16"5/64"191862A3250000
    15/32"-32
    		9/16"3/32"191862A5490000
    15/32"-32
    		5/8"3/32"191862A3290000
    15/32"-32
    		5/8"9/16"191862A3330000
    1/2"-28
    		5/8"3/32"191862A33000000
    1/2"-28
    		5/8"1/8"191862A5510000
    11/16"-24
    		1"27/64"191862A55400000
    3/4"-20
    		1"27/64"191862A55500000
     
    Black-Oxide 18-8 Stainless Steel
    5/16"-32
    		7/16"7/64"591862A57600000
    3/8"-32
    		1/2"3/32"191862A5780000
    7/16"-28
    		5/8"3/32"191862A5840000
    15/32"-32
    		5/8"9/16"191862A5890000
    1/2"-28
    		5/8"3/32"191862A59100000
    5/8"-24
    		15/16"3/8"191862A59400000
    11/16"-24
    		1"27/64"191862A59500000
    3/4"-20
    		1"27/64"191862A59600000
     
    316 Stainless Steel
    1/4"-32
    		5/16"5/64"194177A2400000
    5/16"-32
    		3/8"3/32"194177A2700000
    3/8"-32
    		1/2"3/32"194177A31000000
    7/16"-28
    		5/8"3/32"194177A3600000
    15/32"-32
    		5/8"9/16"194177A4200000
    1/2"-28
    		5/8"1/8"194177A44000000
    5/8"-24
    		15/16"3/8"194177A46000000
    11/16"-24
    		1"27/64"194177A47000000
    3/4"-20
    		1"27/64"194177A48000000
    7/8"-20
    		1 5/16"31/64"194177A49000000
     
    UNS ThreadAbout UNS Thread
    18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic.
    Black-Oxide 18-8 Stainless Steel—Black-oxide 18-8 stainless steel nuts have a dark surface color.
    316 Stainless Steel—316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-40
    		5/16"1/16"191862A557000000
    1/4"-40
    		5/8"3/16"191862A3150000
    5/8"-27
    		3/4"1/8"191862A3380000
     
    Black-Oxide 18-8 Stainless Steel
    1/4"-40
    		5/8"3/16"191862A5990000
    5/8"-27
    		3/4"1/8"191862A6010000
     
    316 Stainless Steel
    1/4"-40
    		5/8"3/16"194177A5200000
    5/8"-27
    		3/4"1/8"194177A5300000
     
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