McMaster-Carr logo
    Filter by
    Thumb Nut Profile
    System of Measurement
    Thumb Nut Grip Type
    Wing Nut Profile
    Thread Type
    Industrial Info Compare
    Thread Spacing
    Industrial Info Compare
    DFARS Specialty Metals
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Drive Style
    Industrial Info Snippet
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    150 Products

    Flanged Knurled-Head Thumb Nuts

    Image of Attribute. Front orientation. Contains Annotated. Thumb Nuts. Flanged Knurled-Head Thumb Nuts.
    The slip-resistant head is easy to grip, while the flange distributes pressure evenly across the mounting surface without the need for a separate washer. These nuts are often used to secure screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts.
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.
    Passivated 18-8 Stainless Steel—With an added layer of protection, these nuts stand up to strong acids and other harsh chemicals.
    Super-Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant thumb nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.
    Collar
    Thread Size
    Dia.
    Ht.
    Head
    Dia.
    Ht.
    Threading
    Thread
    Dp.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0-80
    5/32"1/8"7/32"1/4"Fully Threaded195150A10100000
    1-72
    5/32"1/8"7/32"1/4"Fully Threaded195150A1020000
    2-56
    3/16"1/8"1/4"1/4"Fully Threaded195150A1100000
    3-48
    1/4"1/8"5/16"1/4"Fully Threaded195150A1030000
    4-40
    1/4"1/8"5/16"1/4"Fully Threaded195150A1200000
    4-40
    1/4"1/8"5/16"5/16"Partially Threaded7/32"195150A1210000
    5-40
    1/4"1/8"5/16"1/4"Fully Threaded195150A1040000
    6-32
    11/32"5/32"3/8"9/32"Fully Threaded195150A1300000
    8-32
    3/8"5/32"7/16"9/32"Fully Threaded195150A1400000
    8-32
    3/8"5/32"7/16"3/8"Partially Threaded1/4"195150A12300000
    10-24
    13/32"3/16"1/2"11/32"Fully Threaded195150A1500000
    10-32
    13/32"3/16"1/2"11/32"Fully Threaded195150A1600000
    12-24
    13/32"3/16"1/2"11/32"Fully Threaded195150A1050000
    1/4"-20
    15/32"7/32"9/16"3/8"Fully Threaded195150A1700000
    1/4"-20
    15/32"7/32"9/16"1/2"Partially Threaded5/16"195150A12400000
    1/4"-28
    15/32"7/32"9/16"3/8"Fully Threaded195150A1060000
    5/16"-18
    17/32"7/32"5/8"13/32"Fully Threaded195150A1800000
    5/16"-24
    17/32"7/32"5/8"13/32"Fully Threaded195150A1070000
    3/8"-16
    5/8"1/4"3/4"15/32"Fully Threaded195150A1900000
    3/8"-24
    5/8"1/4"3/4"15/32"Fully Threaded195150A10800000
    7/16"-14
    11/16"5/16"1"17/32"Fully Threaded195150A10900000
    7/16"-20
    11/16"5/16"1"17/32"Fully Threaded195150A11200000
    1/2"-13
    3/4"3/8"1"5/8"Fully Threaded195150A11300000
    M1.6 × 0.35 mm4 mm4 mm6 mm6 mmFully Threaded196445A2600000
    M1.6 × 0.35 mm4 mm4 mm8 mm6 mmFully Threaded196445A2700000
    M2 × 0.4 mm4 mm2 mm6 mm4 mmFully Threaded196445A1010000
    M2 × 0.4 mm4 mm4 mm8 mm6 mmFully Threaded196445A2800000
    M2.5 × 0.45 mm4 mm5 mm12 mm7 mmFully Threaded196445A2900000
    M2.5 × 0.45 mm5 mm3 mm6 mm6 mmFully Threaded196445A3200000
    M2.5 × 0.45 mm6 mm3 mm8 mm6 mmFully Threaded196445A1020000
    M3 × 0.5 mm6 mm3 mm8 mm6 mmFully Threaded196445A3300000
    M3 × 0.5 mm6 mm5 mm16 mm8 mmFully Threaded196445A3100000
    M3.5 × 0.6 mm9 mm4 mm10 mm7 mmFully Threaded196445A3400000
    M4 × 0.7 mm8 mm6 mm12 mm10 mmFully Threaded196445A1110000
    M4 × 0.7 mm8 mm6 mm20 mm10 mmFully Threaded196445A11200000
    M4 × 0.7 mm9 mm4 mm10 mm7 mmFully Threaded196445A3500000
    M5 × 0.8 mm10 mm7.5 mm16 mm12 mmFully Threaded196445A1130000
    M5 × 0.8 mm10 mm7.5 mm24 mm12 mmFully Threaded196445A11400000
    M5 × 0.8 mm11 mm5 mm13 mm9 mmFully Threaded196445A3600000
    M6 × 1 mm12 mm5 mm13 mm9 mmFully Threaded196445A3700000
    M6 × 1 mm12 mm10 mm20 mm15 mmFully Threaded196445A11500000
    M6 × 1 mm12 mm10 mm24 mm15 mmFully Threaded196445A11600000
    M8 × 1.25 mm16 mm6 mm19 mm12 mmFully Threaded196445A3800000
    M8 × 1.25 mm16 mm12 mm24 mm18 mmFully Threaded196445A11700000
    M8 × 1.25 mm16 mm12 mm31.8 mm18 mmFully Threaded196445A11800000
    M10 × 1.5 mm20 mm15 mm26 mm23 mmFully Threaded196445A11900000
    M10 × 1.5 mm20 mm15 mm31.8 mm23 mmFully Threaded196445A12100000
    M12 × 1.75 mm24 mm20 mm31.8 mm30 mmFully Threaded196445A12200000
     
    Black-Oxide 18-8 Stainless Steel
    2-56
    3/16"1/8"1/4"1/4"Fully Threaded195150A1470000
    4-40
    1/4"1/8"5/16"1/4"Fully Threaded195150A1480000
    6-32
    11/32"5/32"3/8"9/32"Fully Threaded195150A1490000
    8-32
    3/8"5/32"7/16"9/32"Fully Threaded195150A1510000
    10-24
    13/32"3/16"1/2"11/32"Fully Threaded195150A15200000
    10-32
    13/32"3/16"1/2"11/32"Fully Threaded195150A15300000
    1/4"-20
    15/32"7/32"9/16"3/8"Fully Threaded195150A15400000
    5/16"-18
    17/32"7/32"5/8"13/32"Fully Threaded195150A15500000
    3/8"-16
    5/8"1/4"3/4"15/32"Fully Threaded195150A15600000
    M2.5 × 0.45 mm5 mm3 mm6 mm6 mmFully Threaded196445A1100000
    M3 × 0.5 mm6 mm3 mm8 mm6 mmFully Threaded196445A1300000
    M3.5 × 0.6 mm9 mm4 mm10 mm7 mmFully Threaded196445A1500000
    M4 × 0.7 mm9 mm4 mm10 mm7 mmFully Threaded196445A1700000
    M5 × 0.8 mm11 mm5 mm13 mm9 mmFully Threaded196445A1900000
    M6 × 1 mm12 mm5 mm13 mm9 mmFully Threaded196445A2200000
    M8 × 1.25 mm16 mm6 mm19 mm12 mmFully Threaded196445A24000000
     
    Passivated 18-8 Stainless Steel
    6-32
    11/32"5/32"3/8"9/32"Fully Threaded195150A1390000
    8-32
    3/8"5/32"7/16"9/32"Fully Threaded195150A1410000
    10-24
    13/32"3/16"1/2"11/32"Fully Threaded195150A14200000
    10-32
    13/32"3/16"1/2"11/32"Fully Threaded195150A14300000
    1/4"-20
    15/32"7/32"9/16"3/8"Fully Threaded195150A14400000
    1/4"-28
    15/32"7/32"9/16"3/8"Fully Threaded195150A13100000
    5/16"-18
    17/32"7/32"5/8"13/32"Fully Threaded195150A14500000
    3/8"-16
    5/8"1/4"3/4"15/32"Fully Threaded195150A14600000
    3/8"-24
    5/8"1/4"3/4"15/32"Fully Threaded195150A13300000
    7/16"-14
    11/16"5/16"1"17/32"Fully Threaded195150A13400000
    1/2"-13
    3/4"3/8"1"5/8"Fully Threaded195150A13600000
    M2.5 × 0.45 mm5 mm3 mm6 mm6 mmFully Threaded196445A1200000
    M3 × 0.5 mm6 mm3 mm8 mm6 mmFully Threaded196445A1400000
    M4 × 0.7 mm9 mm4 mm10 mm7 mmFully Threaded196445A1800000
    M5 × 0.8 mm11 mm5 mm13 mm9 mmFully Threaded196445A2100000
    M6 × 1 mm12 mm5 mm13 mm9 mmFully Threaded196445A2300000
    M8 × 1.25 mm16 mm6 mm19 mm12 mmFully Threaded196445A25000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    4-40
    1/4"1/8"5/16"1/4"Fully Threaded199937A10100000
    6-32
    11/32"5/32"3/8"9/32"Fully Threaded199937A10200000
    8-32
    3/8"5/32"7/16"9/32"Fully Threaded199937A10300000
    10-24
    13/32"3/16"1/2"11/32"Fully Threaded199937A10400000
    10-32
    13/32"3/16"1/2"11/32"Fully Threaded199937A10500000
    1/4"-20
    15/32"7/32"9/16"3/8"Fully Threaded199937A10600000
    5/16"-18
    17/32"7/32"5/8"13/32"Fully Threaded199937A10700000
    3/8"-16
    5/8"1/4"3/4"15/32"Fully Threaded199937A10800000
    1/2"-13
    13/16"1/4"1"1/2"Fully Threaded199937A10900000
     
    Brass
    Brass—With a warm, polished look, these nuts are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. It is also softer than other metals, so it's easier to thread together.
    Zinc-Plated Brass—The zinc plating offers better corrosion resistance than plain brass to stand up to solvents and mild chemicals.
    Collar
    Thread Size
    Dia.
    Ht.
    Head
    Dia.
    Ht.
    Threading
    Pkg.
    Qty.
    Pkg.
    Brass
    0-80
    5/32"1/8"7/32"1/4"Fully Threaded192741A10100000
    1-72
    3/16"1/8"1/4"1/4"Fully Threaded192741A2010000
    2-56
    3/16"1/8"1/4"1/4"Fully Threaded192741A1020000
    3-48
    1/4"1/8"5/16"1/4"Fully Threaded192741A2020000
    4-40
    5/16"9/64"3/8"1/4"Fully Threaded2592741A1000000
    5-40
    11/32"5/32"3/8"9/32"Fully Threaded192741A2030000
    6-32
    5/16"9/64"3/8"1/4"Fully Threaded2592741A1100000
    8-32
    3/8"3/16"7/16"5/16"Fully Threaded2592741A12000000
    10-24
    7/16"13/64"1/2"21/64"Fully Threaded1092741A1300000
    10-32
    7/16"13/64"1/2"21/64"Fully Threaded1092741A1400000
    12-24
    1/2"13/64"9/16"11/32"Fully Threaded1092741A1500000
    1/4"-20
    9/16"7/32"5/8"3/8"Fully Threaded1092741A1600000
    1/4"-28
    15/32"7/32"9/16"3/8"Fully Threaded192741A2040000
    5/16"-18
    39/64"15/64"11/16"13/32"Fully Threaded1092741A17000000
    3/8"-16
    5/8"1/4"3/4"15/32"Fully Threaded192741A2050000
     
    Zinc-Plated Brass
    8-32
    3/8"5/32"7/16"9/32"Fully Threaded192741A20900000
    10-24
    13/32"3/16"1/2"11/32"Fully Threaded192741A21000000
    10-32
    13/32"3/16"1/2"11/32"Fully Threaded192741A21100000
    1/4"-20
    15/32"7/32"9/16"3/8"Fully Threaded192741A21200000
    5/16"-18
    17/32"7/32"5/8"13/32"Fully Threaded192741A21300000
    3/8"-16
    5/8"1/4"3/4"15/32"Fully Threaded192741A21400000
    M2.5 × 0.45 mm5 mm3 mm6 mm6 mmFully Threaded196115A4100000
    M3 × 0.5 mm6 mm3 mm8 mm6 mmFully Threaded196115A4200000
    M3.5 × 0.6 mm9 mm4 mm10 mm7 mmFully Threaded196115A4800000
    M4 × 0.7 mm9 mm4 mm10 mm7 mmFully Threaded196115A4400000
    M5 × 0.8 mm11 mm5 mm13 mm9 mmFully Threaded196115A4500000
    M6 × 1 mm12 mm5 mm13 mm9 mmFully Threaded196115A4600000
    M8 × 1.25 mm16 mm6 mm19 mm12 mmFully Threaded196115A4700000
     

    Hex-Head Thumb Nuts

    Apply extra torque to these nuts to prevent accidental loosening. Twist them on by hand, then crank with a wrench for a tight fit. The flange distributes pressure evenly across the mounting surface without the need for a separate washer. These nuts are often used to secure screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Contains Annotated. Thumb Nuts. Hex-Head Thumb Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Collar
    Thread
    Size
    Dia.
    Ht.
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    4-40
    1/4"1/8"5/16"1/4"194365A34000000
    6-32
    11/32"5/32"3/8"9/32"194365A3500000
    8-32
    3/8"5/32"7/16"9/32"194365A3600000
    10-32
    13/32"3/16"1/2"11/32"194365A3800000
    1/4"-20
    15/32"7/32"9/16"3/8"194365A39000000
    5/16"-18
    17/32"7/32"5/8"13/32"194365A40000000
     

    Flanged Wing Nuts

    The wings give you extra leverage for a tight fit, while the flange distributes pressure evenly across the mounting surface without the need for a separate washer. These nuts are often used to secure screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. They are the easiest nuts to twist on and off, so they are ideal for fastening parts that need to be frequently disassembled, such as access panels and covers.
    Zinc
    Image of Product. Front orientation. Thumb Nuts. Flanged Wing Nuts.
    Zinc—Zinc nuts have better corrosion resistance than steel to withstand occasional exposure to moisture. However, they're not as strong.
    Black Zinc—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They have better corrosion resistance than steel to withstand occasional exposure to moisture, however, they're not as strong.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Zinc
    6-32
    3/4"23/64"1092239A10200000
    8-32
    3/4"23/64"1092239A3100000
    8-32
    7/8"7/16"2592239A10000000
    10-24
    7/8"7/16"2592239A12500000
    10-32
    3/4"25/64"1092239A3200000
    10-32
    7/8"7/16"2592239A15000000
    1/4"-20
    1"1/2"2592239A17500000
    1/4"-20
    1 1/8"37/64"2592239A20000000
    5/16"-18
    1"1/2"1092239A4300000
    5/16"-18
    1 1/8"37/64"2592239A22500000
    3/8"-16
    1 1/8"37/64"2592239A25000000
     
    Black Zinc
    6-32
    3/4"23/64"1092239A33000000
    8-32
    3/4"23/64"1092239A34000000
    10-24
    7/8"29/64"1092239A35000000
    10-32
    3/4"23/64"1092239A36000000
    10-32
    7/8"29/64"1092239A37000000
    1/4"-20
    1"1/2"592239A3800000
    1/4"-20
    1 1/4"37/64"592239A39000000
    5/16"-18
    1"1/2"592239A40000000
    5/16"-18
    1 1/4"37/64"592239A41000000
    3/8"-16
    1 1/4"37/64"592239A42000000
     

    Flanged-Hex Slide-Adjust Push-Button Nuts

    Image of Product. Front orientation. Push-Button Nuts. Flanged-Hex Slide-Adjust Push-Button Nuts.
    These nuts have a flange that distributes the load over a large area and reduces stress where the nut meets the material surface. Push the button to disengage the threads for quick adjustments on threaded rods. They can be tightened with a wrench once positioned by hand. A black-oxide finish provides corrosion resistance in dry environments.
    Flange
    Thread
    Size
    Wd.
    Ht.
    Dia.
    Thk.
    Each
    Black-Oxide Steel
    1/4"-20
    7/8"5/8"1"0.13"98150A320000000
    5/16"-18
    1"13/16"1 1/4"0.19"98150A34000000
    3/8"-16
    1"13/16"1 1/4"0.19"98150A36000000
    1/2"-13
    1 3/8"1 1/8"1 5/8"0.25"98150A38000000
    5/8"-11
    1 3/8"1 1/8"1 5/8"0.25"98150A42000000
     
    back to top