McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    33 Products

    Pipe Size Chart/Rulers

    Image of ProductInUse. Front orientation. Pipe Size Chart/Rulers.
    Measure outer diameter and mark lines around pipe. A pipe size conversion chart is printed on these chart/rulers. They’re fiber-reinforced rubber for grease, oil, gasoline, and salt water resistance.
    For Pipe OD
    Lg.
    Wd.
    Thk.
    Measuring
    Lg.
    Graduations (Numeric
    Graduations)
    Color
    Graduation
    Color
    Max. Temp.,
    ° F
    Each
    Rubber
    1" to 6", 2 mm to 60 cm30"2 5/8"3/64"28"1/16" (1"), 2 mm (1 cm)GrayWhite3600000000000000
    2" to 16", 2 mm to 78 cm60"3 7/8"3/64"36"1/16" (1"), 2 mm (1 cm)GrayWhite360000000000000
    6" to 30", 2 mm to 77 cm120"5 1/4"3/64"36"1/16" (1"), 2 mm (1 cm)GrayWhite360000000000000
     

    Contour Markers

    Image of Product. Front orientation. Contour Markers.
    Lay out pipe and structural steel for any type or size of pipe fitting—elbows, tees, and wyes of all angles. These markers are lightweight aluminum.
    For Pipe OD
    Angle Measured
    Range
    Graduations (Angle
    Increments)
    Mount
    Type
    Marker Type
    Includes
    Each
    Anodized Aluminum
    1 1/2" to 18"0° to 90°2.5° (10°)MagnetSoapstone CrayonCalibrated Protractor Dials, Holder for Soapstone Crayon, Level, Magnetic Base, Triple-Jointed Marking Arm0000000000000
    8" to 48"0° to 90°2.5° (10°)MagnetSoapstone CrayonBuilt-in Bubble Level, Calibrated Protractor Dials, Holder for Soapstone Crayon, Magnetic Base, Triple-Jointed Marking Arm000000000000
     

    Pipe Flange Aligner Pins with Horizontal Level

    Image of Product. Front orientation. Pipe Flange Aligners. Pipe Flange Aligner Pins with Horizontal Level.
    Ensure horizontal alignment of pipe flanges with a level rod that runs between two alignment pins. One pin in each pair has a level for vertical alignment. Insert these nut-and-bolt pins into adjacent flange holes and tighten to align flanges before connecting two pipes.
    For Flange
    Hole Dia.
    Aligner Connection
    Method
    Rod
    Lg.
    Each
    Steel
    1/2" to 1 7/16"Screw Together10"000000000000000
    1/2" to 1 15/16"Screw Together18"00000000000000
     

    Pipe Contour Gauges

    Image of ProductInUse. Push Down. Front orientation. Contains Border. Contour Gauges. Pipe Contour Gauges.
    Image of ProductInUse. Slide Up and Mark. Front orientation. Contains Border. Contour Gauges. Pipe Contour Gauges.
    Image of Product. Front orientation. Contour Gauges. Pipe Contour Gauges.

    Push Down

    Slide Up and Mark

    Probes take the shape of a pipe joint so you can transfer the exact outline to the pipe before you cut.
    For
    Pipe
    Size
    OD
    Probe Material
    Each
    1
    1 5/16"Stainless Steel
    0000000000000
    1 1/4
    1 5/8"Stainless Steel
    000000000000
    1 1/2
    1 7/8"Stainless Steel
    000000000000
    2
    2 3/8"Stainless Steel
    000000000000
    2 1/2
    2 7/8"Stainless Steel
    0000000000000

    Magnetic Pipe Flange Aligners with Level

    Image of ProductInUse. Front orientation. Pipe Flange Aligners. Magnetic Pipe Flange Aligners with Level.
    Image of Product. Front orientation. Pipe Flange Aligners. Magnetic Pipe Flange Aligners with Level.
    Ensure an even seal around your flange—these tools align and level flanges in a single step. The strong magnets make sure your bolt holes are perfectly inline horizontally and that your flange isn’t tilted. If your flange is made of stainless steel or another nonmagnetic material, secure these aligners using the included threaded cones.
    For Flange
    Hole Dia.
    For Max. Flange Hole
    Ctr.-to-Ctr. Distance
    Level
    Lg.
    Aligner Connection
    Method
    Includes
    Cone
    Material
    Magnet
    Material
    Container
    Type
    Each
    Aluminum Body
    1/2" to 2"9 1/2"10 1/2"MagneticThreaded ConesSteelNeodymiumCarrying Case00000000000000
     

    Pipe Flange Aligners with Protractor

    Image of ProductInUse. Front orientation. Pipe Flange Aligners. Pipe Flange Aligners with Protractor.
    Line up two pipe flanges and determine pipe angle with the included nut-and-bolt pins, level, and protractor. Flange holes align as you tighten the pins.
    For Flange
    Hole Dia.
    Angle Measured
    Range
    Graduations (Angle
    Increments)
    For Distance
    Between Bolt Holes
    Each
    Aluminum
    3/16" to 1 3/4"0° to 90°2.5° (2°)2" to 5 1/2"00000000000000
     

    Center-Locating Punches for Curved Surfaces

    Image of ProductInUse. Front orientation. Center Punches. Center-Locating Punches for Curved Surfaces.
    Locate and mark the centerline on rods, tubes, and pipes, lay out keyways, and establish angles for connections.
    Manual—Manual locators are for use with a hammer. Gently strike the rod to mark the center.
    Spring Loaded—Spring-loaded locators mark the center with the pull of a trigger.
    Adjustable Dial Protractor—Locators with an adjustable dial protractor aid in establishing marks for angled connections.
    Punch
    Operation
    Angle Measured
    Range
    Graduations
    Angle Numeric
    Increments
    For Min.
    Pipe OD
    Material
    Punch
    Material
    Includes
    Features
    Each
    Manual0° to 90°2.5°10°1/2"Aluminum
    SteelAdjustable Dial ProtractorBubble Level0000000000000
    Spring Loaded0° to 90°2.5°10°1"Aluminum
    SteelAdjustable Dial ProtractorBubble Level000000000000
     
    Replacement Levels

    Contour Gauges

    Image of Product. Front orientation. Contour Gauges. Contour Gauges.
    Transfer contours, patterns, and shapes for applications such as fitting floor tile and installing pipe insulation. A series of narrow probes slide within a frame to duplicate any shape.
    For
    Contour
    Lg.
    Wd.
    Probe Material
    Each
    5 1/4"2"Stainless Steel
    0000000000000
    10"1 1/4"Plastic0000000000000

    Stepped Pipe Flange Aligner Pins

    Image of ProductInUse. Front orientation. Pipe Flange Aligners. Stepped Pipe Flange Aligner Pins.
    Image of Product. Front orientation. Pipe Flange Aligners. Stepped Pipe Flange Aligner Pins.
    Each step on these aligner pins matches common bolt holes on pipe flanges, so they're more precise than conical aligner pins and don’t require nuts. Press the pair of pins into mated flanges to make sure the flanges are aligned. Once two sets of holes are aligned, you'll know the rest of the holes are as well. Made of durable chrome-plated steel, they'll hold their shape over time and resist rust.
    For Flange
    Hole Dia.
    Lg.
    Pair
    Chrome-Plated Steel
    3/8" to 3/4"3 5/8"0000000000000
    3/4" to 1 1/4"5 1/2"000000000000
    3/4" to 1 3/8"8"000000000000
     

    Pipe Flange Aligner Pins

    Image of Product. Front orientation. Pipe Flange Aligners. Pipe Flange Aligner Pins.
    Insert a pair of these nut-and-bolt pins into adjacent flange holes and tighten to align flanges before connecting two pipes. One pin in each pair has a level for vertical alignment. Use a separate level to align the flange horizontally. Also known as two-hole pins.
    4 1/2" Lg. Extension—Pins with a 4 ½” length extension let you increase the length of your pins to align thicker flanges.
    Two Couplings—Use the included couplings to connect the extension to your pins.
    For
    Flange
    Hole Dia.
    Thk.
    Aligner Connection
    Method
    Includes
    Pair
    Steel
    5/16" to 15/16"1"Screw Together0000000000000
    1/2" to 1 7/16"2 1/2"Screw Together000000000000
    1/2" to 1 15/16"4"Screw Together0000000000000
    5/8" to 3"9"Screw Together4 1/2" Lg. Extension, Two Couplings0000000000000
     
    Replacements for Pipe Flange Aligners

    Magnetic Pipe Flange Aligner Pins

    Image of Product. Bottom orientation. Pipe Flange Aligners. Magnetic Pipe Flange Aligner Pins.
    Swiftly and accurately align pipe flange bolt holes without the hassle of threads. These pins have strong magnets that snap together. Insert them into adjacent bolt holes to help make sure flanges are parallel before connecting pipes. Also known as two-hole pins.
    For 2 3/4" Flange Thickness—Pins for 2 3/4" thick flanges can be used with pipe flange aligner extensions (sold separately) to lengthen their reach for flanges up to 3 1/2″ thick.
    Pipe Flange Aligners
    Pipe Flange
    Aligner Extensions
    For
    Flange
    Hole Dia.
    Thk.
    Aligner Connection
    Method
    Magnet
    Material
    Pair
    Lg.
    Each
    Steel
    5/16" to 7/8"7/8"MagneticNeodymium0000000000000———0
    1/2" to 1 7/16"1 3/8"MagneticNeodymium0000000000000———0
    3/4" to 1 15/16"2 3/4"MagneticNeodymium00000000000001 3/4"0000000000000
     
    back to top