McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    77 Products

    Performance

    Thumb Nut Profile

    Nut Type

    Knurled-Head Thumb Nuts

    Image of Attribute. Front orientation. Contains Annotated. Thumb Nuts. Knurled-Head Thumb Nuts.
    Get a good grip on these nuts, even with oily fingers. They have a raised, slip-resistant head, so you can tighten them by hand and make controlled adjustments. Knurled-head nuts have a smaller profile than wing nuts, so they fit in tighter spots.
    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.
    Collar,
    mm
    Thread Size
    Dia.
    Ht.
    Head Dia.,
    mm
    Ht.,
    mm
    Threading
    Specs.
    Met
    Each
    18-8 Stainless Steel
    M2 × 0.4 mm54106Fully Threaded—90368A10100000
    M2.5 × 0.45 mm65127.5Fully Threaded—90368A1020000
    M3 × 0.5 mm65127.5Fully ThreadedDIN 46690368A1500000
    M3.5 × 0.6 mm86169.5Fully Threaded—90368A1040000
    M4 × 0.7 mm86169.5Fully ThreadedDIN 46690368A2000000
    M5 × 0.8 mm107.52011.5Fully ThreadedDIN 46690368A2500000
    M6 × 1 mm12102415Fully ThreadedDIN 46690368A3000000
    M8 × 1.25 mm16123018Fully ThreadedDIN 46690368A32500000
    M10 × 1.5 mm20153623Fully ThreadedDIN 46690368A35000000
    M12 × 1.75 mm191225.422Fully Threaded—90368A10300000
    M14 × 2 mm28205630Fully Threaded—90368A10500000
    M16 × 2 mm32256435Fully Threaded—90368A10600000
     
    Black-Oxide 18-8 Stainless Steel
    M2 × 0.4 mm54106Fully Threaded—90368A1070000
    M3 × 0.5 mm65127.5Fully ThreadedDIN 46690368A1090000
    M4 × 0.7 mm86169.5Fully ThreadedDIN 46690368A1110000
    M5 × 0.8 mm107.52011.5Fully ThreadedDIN 46690368A1120000
    M6 × 1 mm12102415Fully ThreadedDIN 46690368A1130000
    M8 × 1.25 mm16123018Fully ThreadedDIN 46690368A11400000
    M10 × 1.5 mm20153623Fully ThreadedDIN 46690368A11500000
    M12 × 1.75 mm191225.422Fully Threaded—90368A1160000
     
    Plastic
    Reinforced Acetal—The best plastic for damp and wet environments, acetal won't swell or lose strength if exposed to moisture. These nuts are reinforced with an aluminum threaded insert, so they can handle more torque than other plastic nuts and won't crack during installation.
    Collar,
    mm
    Thread Size
    Dia.
    Ht.
    Head Dia.,
    mm
    Ht.,
    mm
    Color
    Threading
    Insert
    Material
    Pkg.
    Qty.
    Pkg.
    Reinforced Acetal
    M3 × 0.5 mm9.11.29.65.6BlackFully ThreadedAluminum
    		1093886A22000000
    M4 × 0.7 mm9.92.4136.7BlackFully ThreadedAluminum
    		1093886A2300000
    M5 × 0.8 mm11.53.2167.5BlackFully ThreadedAluminum
    		1093886A2400000
    M6 × 1 mm13.64.8199.1BlackFully ThreadedAluminum
    		1093886A25000000
    M6 × 1 mm14.31.6269.1BlackFully ThreadedAluminum
    		1093886A26000000
    M8 × 1.25 mm16.33.22610.7BlackFully ThreadedAluminum
    		1093886A27000000
     

    Low-Profile Knurled-Head Thumb Nuts

    Twist these thumb nuts into spaces without a lot of clearance. They have a short, slip-resistant head, so you can grip them easily and make controlled adjustments in cramped spots. You can also use them as jam nuts by threading them against another nut to hold it in place.
    Steel
    Image of Product. Front orientation. Thumb Nuts. Low-Profile Knurled-Head Thumb Nuts.
    Image of Attribute. Front orientation. Contains Annotated. Low-Profile Knurled-Head Thumb Nuts.
    Black-Oxide Steel—A dark, matte coating creates a finished look. These nuts offer minimal corrosion resistance, so they're best for dry environments.
    Collar,
    mm
    Thread Size
    Dia.
    Ht.
    Head Dia.,
    mm
    Ht.,
    mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    M4 × 0.7 mm80.5164DIN 467192815A20100000
    M5 × 0.8 mm101205DIN 467192815A2020000
    M6 × 1 mm121246DIN 467192815A2030000
    M8 × 1.25 mm162308DIN 467192815A2040000
    M10 × 1.5 mm2023610DIN 467192815A2050000
    M12 × 1.75 mm2023610DIN 467192815A2060000
     

    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.
    Collar,
    mm
    Thread Size
    Dia.
    Ht.
    Head Dia.,
    mm
    Ht.,
    mm
    Threading
    Each
    18-8 Stainless Steel
    M1.6 × 0.35 mm4466Fully Threaded96445A26000000
    M1.6 × 0.35 mm4486Fully Threaded96445A2700000
    M2 × 0.4 mm4264Fully Threaded96445A1010000
    M2 × 0.4 mm4486Fully Threaded96445A2800000
    M2.5 × 0.45 mm45127Fully Threaded96445A2900000
    M2.5 × 0.45 mm5366Fully Threaded96445A3200000
    M2.5 × 0.45 mm6386Fully Threaded96445A1020000
    M3 × 0.5 mm6386Fully Threaded96445A3300000
    M3 × 0.5 mm65168Fully Threaded96445A3100000
    M3.5 × 0.6 mm94107Fully Threaded96445A3400000
    M4 × 0.7 mm861210Fully Threaded96445A1110000
    M4 × 0.7 mm862010Fully Threaded96445A11200000
    M4 × 0.7 mm94107Fully Threaded96445A3500000
    M5 × 0.8 mm107.51612Fully Threaded96445A1130000
    M5 × 0.8 mm107.52412Fully Threaded96445A11400000
    M5 × 0.8 mm115139Fully Threaded96445A3600000
    M6 × 1 mm125139Fully Threaded96445A3700000
    M6 × 1 mm12102015Fully Threaded96445A11500000
    M6 × 1 mm12102415Fully Threaded96445A11600000
    M8 × 1.25 mm1661912Fully Threaded96445A3800000
    M8 × 1.25 mm16122418Fully Threaded96445A11700000
    M8 × 1.25 mm161231.818Fully Threaded96445A11800000
    M10 × 1.5 mm20152623Fully Threaded96445A11900000
    M10 × 1.5 mm201531.823Fully Threaded96445A12100000
    M12 × 1.75 mm242031.830Fully Threaded96445A12200000
     
    Black-Oxide 18-8 Stainless Steel
    M2.5 × 0.45 mm5366Fully Threaded96445A1100000
    M3 × 0.5 mm6386Fully Threaded96445A1300000
    M3.5 × 0.6 mm94107Fully Threaded96445A1500000
    M4 × 0.7 mm94107Fully Threaded96445A1700000
    M5 × 0.8 mm115139Fully Threaded96445A1900000
    M6 × 1 mm125139Fully Threaded96445A2200000
    M8 × 1.25 mm1661912Fully Threaded96445A24000000
     
    Passivated 18-8 Stainless Steel
    M2.5 × 0.45 mm5366Fully Threaded96445A1200000
    M3 × 0.5 mm6386Fully Threaded96445A1400000
    M4 × 0.7 mm94107Fully Threaded96445A1800000
    M5 × 0.8 mm115139Fully Threaded96445A2100000
    M6 × 1 mm125139Fully Threaded96445A2300000
    M8 × 1.25 mm1661912Fully Threaded96445A25000000
     
    Brass
    Zinc-Plated Brass—The zinc plating offers better corrosion resistance than plain brass to stand up to solvents and mild chemicals.
    Collar,
    mm
    Thread Size
    Dia.
    Ht.
    Head Dia.,
    mm
    Ht.,
    mm
    Threading
    Each
    Zinc-Plated Brass
    M2.5 × 0.45 mm5366Fully Threaded96115A41000000
    M3 × 0.5 mm6386Fully Threaded96115A4200000
    M3.5 × 0.6 mm94107Fully Threaded96115A4800000
    M4 × 0.7 mm94107Fully Threaded96115A4400000
    M5 × 0.8 mm115139Fully Threaded96115A4500000
    M6 × 1 mm125139Fully Threaded96115A4600000
    M8 × 1.25 mm1661912Fully Threaded96115A4700000
     
    back to top