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

    Aluminum Socket Head Screws

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

    Fully Threaded

    Partially Threaded

    One-third the weight of steel, choose these screws when your project has weight limitations. Like stainless steel, these also resist rust, but they aren't as strong as stainless steel screws. The deep, six-point socket keeps hex keys from slipping out and damaging the drive.
    Length is measured from under the head.
    Blue Anodized Socket Head Screws—The blue color is easy to see at a glance and the anodized finish boosts corrosion resistance.
    Head
    Socket Head Screws
    Blue Anodized
    Socket Head Screws
    Lg.
    Dia.
    Ht.
    Threading
    Thread
    Spacing
    Tensile
    Strength
    Material
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    2-56
    1/8"0.14"0.086"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A1010000001098511A103000000
    3/16"0.14"0.086"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A111000001098511A11300000
    1/4"0.14"0.086"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A121000001098511A12300000
    5/16"0.14"0.086"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A71100000———0
    3/8"0.14"0.086"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A71200000598511A7270000
    1/2"0.14"0.086"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A131000001098511A13300000
     
    4-40
    3/16"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A201000001098511A20300000
    1/4"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A211000001098511A21300000
    5/16"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A221000001098511A22300000
    3/8"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A231000001098511A23300000
    1/2"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A241000001098511A24300000
    5/8"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A251000001098511A25300000
    3/4"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A151000001098511A15200000
    1"0.183"0.112"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A16100000598511A16200000
     
    6-32
    1/4"0.226"0.138"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A301000001098511A30300000
    5/16"0.226"0.138"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A71300000———0
    3/8"0.226"0.138"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A311000001098511A31300000
    1/2"0.226"0.138"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A321000001098511A32300000
    5/8"0.226"0.138"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A331000001098511A33300000
    3/4"0.226"0.138"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A341000001098511A34300000
    1"0.226"0.138"Fully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A351000001098511A35300000
     
    8-32
    1/4"0.27"0.164"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A40100000598511A40300000
    3/8"0.27"0.164"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    1098511A411000001098511A41300000
    1/2"0.27"0.164"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A42100000598511A42300000
    5/8"0.27"0.164"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A43100000598511A43300000
    3/4"0.27"0.164"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    1098511A441000001098511A44300000
    1"0.27"0.164"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    198511A4510000198511A4530000
    1 1/4"0.27"0.164"Partially ThreadedCoarse
    Not Rated2024 Aluminum
    598511A71400000———0
     
    10-24
    3/8"5/16"0.19"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A71500000———0
    1/2"5/16"0.19"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A71600000———0
    5/8"5/16"0.19"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A71700000———0
    3/4"5/16"0.19"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A71800000———0
     
    10-32
    1/4"5/16"0.19"Fully ThreadedFine
    Not Rated2024 Aluminum
    1098511A501000001098511A50300000
    3/8"5/16"0.19"Fully ThreadedFine
    Not Rated2024 Aluminum
    1098511A511000001098511A51300000
    1/2"5/16"0.19"Fully ThreadedFine
    Not Rated2024 Aluminum
    1098511A521000001098511A52300000
    5/8"5/16"0.19"Fully ThreadedFine
    Not Rated2024 Aluminum
    598511A71900000———0
    3/4"5/16"0.19"Fully ThreadedFine
    Not Rated2024 Aluminum
    1098511A541000001098511A54300000
    1 1/4"5/16"0.19"Partially ThreadedFine
    Not Rated2024 Aluminum
    598511A72100000———0
     
    1/4"-20
    3/8"3/8"1/4"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    1098511A601000001098511A60300000
    1/2"3/8"1/4"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    1098511A611000001098511A61300000
    5/8"3/8"1/4"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A62100000598511A62300000
    3/4"3/8"1/4"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    598511A63100000598511A63300000
    1"3/8"1/4"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    198511A6410000198511A6430000
    1 1/4"3/8"1/4"Fully ThreadedCoarse
    Not Rated2024 Aluminum
    198511A6510000198511A6530000
    1 1/2"3/8"1/4"Partially ThreadedCoarse
    Not Rated2024 Aluminum
    198511A6610000198511A6630000
    1 3/4"3/8"1/4"Partially ThreadedCoarse
    Not Rated2024 Aluminum
    198511A7230000———0
    2 1/2"3/8"1/4"Partially ThreadedCoarse
    Not Rated2024 Aluminum
    198511A7240000———0
     
    1/4"-28
    3/4"3/8"1/4"Fully ThreadedFine
    Not Rated2024 Aluminum
    598511A72500000———0
    1"3/8"1/4"Fully ThreadedFine
    Not Rated2024 Aluminum
    198511A7260000———0
     
    M3 × 0.5 mm
    6 mm5.68 mm3 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A72800000———0
    8 mm5.68 mm3 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A72900000———0
    10 mm5.68 mm3 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A73100000———0
    12 mm5.68 mm3 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A73200000———0
    16 mm5.68 mm3 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A73300000———0
    20 mm5.68 mm3 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A73400000———0
     
    M4 × 0.7 mm
    8 mm7.22 mm4 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A7350000598511A7360000
    10 mm7.22 mm4 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A7370000598511A7380000
    12 mm7.22 mm4 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A7390000598511A7410000
    14 mm7.22 mm4 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A7420000———0
    16 mm7.22 mm4 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A7430000———0
    20 mm7.22 mm4 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A7440000———0
     
    M5 × 0.8 mm
    10 mm8.72 mm5 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    1098511A74500000———0
    16 mm8.72 mm5 mmFully ThreadedCoarse
    Not Rated7075 Aluminum
    598511A74600000———0
     

    Aluminum Oversized-Flange Button Head Hex-Drive Screws

    Image of Product. Front orientation. Rounded Head Screws. Aluminum Oversized-Flange Button Head Hex-Drive Screws.
    One-third the weight of steel, these are the lightest flanged screws we offer. They have an oversized flange that spreads pressure over a large area to protect thin material without needing a washer. 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.
    6061 Aluminum—With a high strength-to-weight ratio, these lightweight screws offer good corrosion resistance.
    Head
    Lg.
    Flange
    Dia.
    Dia.
    Ht.
    Threading
    Tensile Strength,
    psi
    Pkg.
    Qty.
    Pkg.
    6061 Aluminum
     
    4-40
    3/16"0.516"0.19"0.18"Fully Threaded40,000194559A15100000
    1/4"0.516"0.19"0.18"Fully Threaded40,000194559A1540000
    3/8"0.516"0.19"0.18"Fully Threaded40,000194559A1570000
    1/2"0.516"0.19"0.18"Fully Threaded40,000194559A1620000
    3/4"0.516"0.19"0.18"Fully Threaded40,000194559A1650000
     
    6-32
    1/4"0.55"0.2"0.19"Fully Threaded40,000594559A11100000
    3/8"0.55"0.2"0.19"Fully Threaded40,000594559A11400000
    1/2"0.55"0.2"0.19"Fully Threaded40,000594559A11800000
    3/4"0.55"0.2"0.19"Fully Threaded40,000194559A1220000
    1"0.55"0.2"0.19"Fully Threaded40,000194559A1250000
     
    8-32
    1/4"0.563"0.25"0.19"Fully Threaded40,000194559A2220000
    3/8"0.656"0.25"0.19"Fully Threaded40,000594559A21100000
    1/2"0.656"0.25"0.19"Fully Threaded40,000594559A21400000
    3/4"0.656"0.25"0.19"Fully Threaded40,000594559A21800000
    1"0.656"0.25"0.19"Fully Threaded40,000194559A2250000
     
    10-24
    1/2"0.75"0.3"0.21"Fully Threaded40,000594559A31100000
    3/4"0.75"0.3"0.21"Fully Threaded40,000594559A31400000
    1"0.75"0.3"0.21"Fully Threaded40,000594559A31800000
     
    10-32
    1/4"0.75"0.3"0.21"Fully Threaded40,000194559A4220000
    3/8"0.75"0.3"0.21"Fully Threaded40,000194559A4250000
    1/2"0.75"0.3"0.21"Fully Threaded40,000594559A41100000
    3/4"0.75"0.3"0.21"Fully Threaded40,000594559A41400000
    1"0.75"0.3"0.21"Fully Threaded40,000594559A41800000
     
    1/4"-20
    3/8"0.75"0.3"0.21"Fully Threaded40,000194559A5250000
    1/2"0.797"0.38"0.21"Fully Threaded40,000194559A5110000
    3/4"0.797"0.38"0.21"Fully Threaded40,000194559A5140000
    1"0.797"0.38"0.21"Fully Threaded40,000194559A5180000
    1 1/2"0.797"0.38"0.21"Fully Threaded40,000194559A5220000
     
    5/16"-18
    1/2"1"0.38"0.21"Fully Threaded40,000194559A6110000
    3/4"1"0.38"0.21"Fully Threaded40,000194559A6140000
    1"1"0.38"0.21"Fully Threaded40,000194559A6180000
    1 1/2"1"0.38"0.21"Fully Threaded40,000194559A6220000
     
    M3 × 0.5 mm
    5 mm12.8 mm5 mm4.6 mmFully Threaded40,000194559A7010000
    6 mm12.8 mm5 mm4.6 mmFully Threaded40,000194559A7020000
    8 mm12.8 mm5 mm4.6 mmFully Threaded40,000194559A7030000
    10 mm12.8 mm5 mm4.6 mmFully Threaded40,000194559A7040000
    12 mm12.8 mm5 mm4.6 mmFully Threaded40,000194559A7050000
     
    M4 × 0.7 mm
    6 mm16.5 mm6.4 mm4.85 mmFully Threaded40,000194559A7110000
    8 mm16.5 mm6.4 mm4.85 mmFully Threaded40,000194559A7120000
    10 mm16.5 mm6.4 mm4.85 mmFully Threaded40,000194559A7130000
    12 mm16.5 mm6.4 mm4.85 mmFully Threaded40,000194559A7140000
    16 mm16.5 mm6.4 mm4.85 mmFully Threaded40,000194559A7150000
     
    M5 × 0.8 mm
    8 mm19.1 mm7.6 mm5.3 mmFully Threaded40,000194559A7210000
    10 mm19.1 mm7.6 mm5.3 mmFully Threaded40,000194559A7220000
    12 mm19.1 mm7.6 mm5.3 mmFully Threaded40,000194559A7230000
    16 mm19.1 mm7.6 mm5.3 mmFully Threaded40,000194559A7240000
    20 mm19.1 mm7.6 mm5.3 mmFully Threaded40,000194559A7250000
     
    M6 × 1 mm
    10 mm20.3 mm9.7 mm5.3 mmFully Threaded40,000194559A7310000
    12 mm20.3 mm9.7 mm5.3 mmFully Threaded40,000194559A7320000
    16 mm20.3 mm9.7 mm5.3 mmFully Threaded40,000194559A7330000
    20 mm20.3 mm9.7 mm5.3 mmFully Threaded40,000194559A7340000
    25 mm20.3 mm9.7 mm5.3 mmFully Threaded40,000194559A73500000
     

    Oversized-Grip Screw-Head Mount Knobs

    Image of ProductInUse. Front orientation. Contains Border. Knobs. Oversized-Grip Screw-Head Mount Knobs.
    Convert screws into knobs so large you can grip them with heavy work gloves. Slip these knobs onto a hex or socket head screw and tighten the set screw to secure. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of aluminum, all have mild corrosion resistance, are lightweight, and are nonmagnetic.
    Knurled-Head Grip
    Image of Product. For Socket Head Screws. Front orientation. For Socket Head Screws. Oversized-Grip Screw-Head Mount Knobs.

    For Socket

    Head Screws

    Head
    For Socket
    Head Screws
    For Screw
    Size
    Dia.
    Ht.
    Each
    Aluminum
    1/4"
    2 3/4"3/8"91363A400000000
    3/8"
    2 3/4"3/8"91363A45000000
    1/2"
    2 3/4"3/8"91363A50000000
    5/8"
    2 3/4"3/8"91363A55000000
    3/4"
    2 3/4"3/8"91363A60000000
    1"
    2 3/4"3/8"91363A65000000
     
    back to top