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    42 Products
    About Hex Head Screws and Bolts
    industrial info icon

    Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.

    Steel Hex Head Screws

    Image of Product. Fully Threaded. Front orientation. Hex Head Screws. Steel Hex Head Screws, Fully Threaded.
    Image of Product. Front orientation. Hex Head Screws. Steel Hex Head Screws, Partially Threaded.

    Fully Threaded

    Partially

    Threaded

    Our most popular hex head screws. These have a head with six flat sides to keep wrenches and sockets from slipping and rounding off the drive.
    Length is measured from under the head.
    High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.
    Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.
    Head
    Lg.
    Wd.
    Ht.
    Threading
    Thread
    Spacing
    Fastener Strength
    Grade/Class
    Tensile Strength,
    psi
    Pkg.
    Qty.
    Pkg.
    High-Strength Zinc-Yellow-Chromate-Plated Steel
     
    1/4"-32
    3/4"7/16"5/32"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A111000000
    1"7/16"5/32"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11200000
    1 1/4"7/16"5/32"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11300000
    1 1/2"7/16"5/32"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11400000
     
    5/16"-32
    3/4"1/2"13/64"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11500000
    1"1/2"13/64"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11600000
    1 1/4"1/2"13/64"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11700000
    1 1/2"1/2"13/64"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11800000
    2"1/2"13/64"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A11900000
     
    3/8"-32
    1"9/16"15/64"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12100000
    1 1/4"9/16"15/64"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12200000
    1 1/2"9/16"15/64"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12300000
    2"9/16"15/64"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12400000
    2 1/2"9/16"15/64"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12500000
     
    1/2"-28
    1 1/4"3/4"5/16"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12600000
    1 1/2"3/4"5/16"Fully ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12700000
    2"3/4"5/16"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12800000
    2 1/2"3/4"5/16"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A12900000
    3"3/4"5/16"Partially ThreadedExtra Fine
    SAE Grade 8
    150,000192620A13100000
     

    Steel Socket Head Screws

    Image of Product. Front orientation. Socket Head Screws. Steel Socket Head Screws, Fully Threaded.

    Fully Threaded

    Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.
    Length is measured from under the head.
    Black-Oxide Alloy Steel—Best for dry environments since moisture will cause these screws to rust. They have a dark, matte appearance.
    Head
    Lg.
    Dia.
    Ht.
    Threading
    Thread
    Spacing
    Tensile Strength,
    psi
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Alloy Steel
     
    1/4"-32
    5/8"3/8"1/4"Fully ThreadedExtra Fine
    170,000590044A203000000
    3/4"3/8"1/4"Fully ThreadedExtra Fine
    170,000590044A20400000
    1"3/8"1/4"Fully ThreadedExtra Fine
    170,000590044A20500000
    1 1/2"3/8"1/4"Fully ThreadedExtra Fine
    170,000590044A20600000
     
    5/16"-32
    3/4"15/32"5/16"Fully ThreadedExtra Fine
    170,000590044A20700000
    1"15/32"5/16"Fully ThreadedExtra Fine
    170,000590044A20800000
    1 1/4"15/32"5/16"Fully ThreadedExtra Fine
    170,000590044A20900000
    1 1/2"15/32"5/16"Fully ThreadedExtra Fine
    170,000590044A30100000
     

    Stainless Steel Button Head Hex-Drive Screws

    Image of Product. Front orientation. Rounded Head Screws. Stainless Steel Button Head Hex-Drive Screws.
    These button head screws won't corrode from moisture and chemicals, but they aren't as strong as alloy steel screws. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver.
    Length is measured from under the head.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.
    Head
    Lg.
    Dia.
    Ht.
    Threading
    Tensile Strength,
    psi
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    1/4"-32
    1/2"0.437"0.132"Fully Threaded70,000Material Certificate
    192949A43900000
    3/4"0.437"0.132"Fully Threaded70,000192949A4400000
    1"0.437"0.132"Fully Threaded70,000192949A4410000
     
    5/16"-32
    1/2"0.547"0.166"Fully Threaded70,000Material Certificate
    192949A4460000
    3/4"0.547"0.166"Fully Threaded70,000192949A4470000
    1"0.547"0.166"Fully Threaded70,000192949A4480000
     
    3/8"-32
    3/4"0.656"0.199"Fully Threaded70,000Material Certificate
    192949A4510000
    1"0.656"0.199"Fully Threaded70,000192949A4520000
    1 1/2"0.656"0.199"Fully Threaded70,000192949A4530000
     

    Ball Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Ball Screws and Nuts. Ball Screws and Nuts .
    Image of Product. A. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Externally Threaded Nut, Ball Nuts, Style A.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Ball Nuts, Externally Threaded Nut, Style B.

    A

    Ball Nuts,

    Externally Threaded

    Nut, Style B

    Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread direction and size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.
    Externally Threaded Ball Nuts—Right-Hand Threaded
    Image of Product. A. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Ball Nuts, Externally Threaded Nut, Style A.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Ball Nuts, Externally Threaded Nut, Style B.

    A

    Style B

    Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Wipers—Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.
    Ball Screw Nuts
    Wipers
    Style
    Thread
    Size
    Lg.
    Wd.
    Ht.
    Dia.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    External Thread
    Size
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max.
    Backlash
    Temp. Range,
    ° F
    Each
    Each
    Black-Oxide Alloy Steel
    A3/4"-5
    2 7/8"1 1/4"10.2"1 1/8"-18
    Rockwell C561,9000.015"-65 to 3003405N4590000002528N34000000
    B1"-4
    2 11/32"1 1/2"1 1/2"10.25"1 9/16"-18Rockwell C561,6250.015"-65 to 3003405N463000000———0
     
    Externally Threaded Ball Nuts—Left-Hand Threaded
    Image of Product. A. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Externally Threaded Nut, Ball Nuts, Style A.

    A

    Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Style
    Thread
    Size
    Lg.
    Wd.
    Ht.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    External Thread
    Size
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max.
    Backlash
    Temp. Range,
    ° F
    Each
    Black-Oxide Alloy Steel
    A1"-4
    2 11/32"1 1/2"1 1/2"10.25"1 9/16"-18Rockwell C561,6200.015"-65 to 3003405N4570000000
     

    Fast-Travel Ball Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Ball Screws and Nuts. Fast-Travel Ball Screws and Nuts.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Fast-Travel Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut, Style C.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Fast-Travel Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut, Style D.

    Ball Nuts,

    Externally

    Threaded Nut,

    Style C

    Ball Nuts,

    Externally

    Threaded Nut,

    Style D

    Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. To ensure compatibility, select components that have the same thread size and number of thread starts. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.
    Externally Threaded Ball Nuts—Right-Hand Threaded
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Fast-Travel Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut, Style C.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Fast-Travel Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut, Style D.

    Style C

    Style D

    Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Style
    Thread
    Size
    Lg.
    Wd.
    Ht.
    Dia.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    External Thread
    Size
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max.
    Backlash
    Temp. Range,
    ° F
    Each
    Black-Oxide Alloy Steel
    C1"-4
    3 1/8"1 11/16"20.5"1 9/16"-18Rockwell C564,2500.015"-65 to 3003405N4660000000
    D1"-4
    3"1 1/2"1 1/2"41"1 9/16"-18Rockwell C562,3000.015"-65 to 3003405N468000000
     
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