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    66 Products

    Tri-Groove-Drive Tamper-Resistant Nuts

    Image of Product. Front orientation. Tamper-Resistant Nuts. Tri-Groove-Drive Tamper-Resistant Nuts.
    Tri-groove-drive nuts are narrower than sloped and drilled-spanner-drive nuts to fit in tight spaces. Install with a tri-groove socket and either a socket driver or an open-end wrench (all sold separately). Use them to reduce the risk of unwanted removal for objects in public spaces such as signs, lighting fixtures, and displays.
    Zinc—Zinc nuts are lightweight and corrosion resistant in wet environments.
    Zinc-Plated Steel—Zinc-plated steel nuts are coated to protect the steel from corrosion in wet environments.
    316 Stainless Steel—316 stainless steel nuts won’t corrode from water, chemicals, or salt spray.
    Nuts
    Tri-Groove
    Sockets
    Socket Drivers
    Open-End
    Wrenches
    Thread Size
    Dia.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Zinc
    M6 × 1 mm0.66"0.265"100000000000000000000000000000000000000000———0
    M8 × 1.25 mm0.83"0.345"100000000000000000000000000000000000000———0
     
    Zinc-Plated Steel
    10-24
    0.64"0.265"2500000000000000000000000000000000000000———0
    10-32
    0.64"0.265"2500000000000000000000000000000000000000———0
    1/4"-20
    0.64"0.265"2500000000000000000000000000000000000000———0
    5/16"-18
    0.83"0.345"2500000000000000000000000000000000000000———0
    3/8"-16
    0.83"0.345"2500000000000000000000000000000000000000———0
     
    316 Stainless Steel
    10-24
    0.65"0.265"1000000000000000000000000000000000000000———0
    10-32
    0.65"0.265"1000000000000000000000000000000000000000———0
    1/4"-20
    0.66"0.265"1000000000000000000000000000000000000000———0
    1/4"-28
    0.65"0.265"1000000000000000000000000000000000000000———0
    5/16"-18
    0.83"0.345"1000000000000000000000000000000000000000———0
    5/16"-24
    0.83"0.35"500000000000000000000000000000000000000———0
    3/8"-16
    0.83"0.345"1000000000000000000000000000000000000000———0
    3/8"-24
    0.83"0.35"500000000000000000000000000000000000000———0
    7/16"-14
    0.83"0.34"10000000000000000000000000000000000000———0
    1/2"-13
    0.93"0.345"100000000000000000000000000000000000000———0
    1/2"-20
    0.93"0.345"100000000000000000000000000000000000000———0
    5/8"-11
    1.51"0.505"1000000000000000000000000000———00000000000000
    5/8"-18
    1.51"0.505"1000000000000000000000000000———0000000000000
    3/4"-10
    1.51"0.505"1000000000000000000000000000———0000000000000
    3/4"-16
    1.51"0.505"1000000000000000000000000000———0000000000000
    M5 × 0.8 mm0.66"0.265"500000000000000000000000000000000000000———0
    M6 × 1 mm0.66"0.265"500000000000000000000000000000000000000———0
    M8 × 1 mm0.82"0.35"10000000000000000000000000000000000000———0
    M8 × 1.25 mm0.82"0.35"500000000000000000000000000000000000000———0
    M10 × 1.25 mm0.82"0.35"10000000000000000000000000000000000000———0
    M10 × 1.5 mm0.82"0.35"10000000000000000000000000000000000000———0
    M12 × 1.5 mm0.94"0.35"100000000000000000000000000000000000000———0
    M12 × 1.75 mm0.94"0.35"100000000000000000000000000000000000000———0
    M16 × 2 mm1.51"0.505"1000000000000000000000000000———0000000000000
     

    Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws

    Image of Product. Front orientation. Rounded Head Screws. Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws.
    Good luck trying to force off these screws. The tri-groove drive has a sloped shape with three notches that makes it nearly impossible to grip without a tri-groove driver. They're often found on electrical boxes, machine control panels, and critical equipment where unauthorized access is a concern.
    Length is measured from under the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Power Tool Bits—Pair these bits with your power tools to turn screws more quickly than manual tools.
    Screws
    Power Tool Bits
    Head
    Lg.
    Dia.
    Ht.
    Threading
    Tensile Strength,
    psi
    Pkg.
    Qty.
    Pkg.
    Each
    Zinc-Plated Steel
     
    6-32
    3/8"0.26"0.12"Fully Threaded80,000500000000000000000000000000000
    1/2"0.26"0.12"Fully Threaded80,0005000000000000000000000000000
    3/4"0.26"0.12"Fully Threaded80,0005000000000000000000000000000
     
    8-32
    3/8"0.28"0.148"Fully Threaded80,0005000000000000000000000000000
    1/2"0.28"0.148"Fully Threaded80,0005000000000000000000000000000
    3/4"0.28"0.148"Fully Threaded80,0005000000000000000000000000000
    1"0.28"0.148"Fully Threaded80,0005000000000000000000000000000
    1 1/4"0.28"0.148"Fully Threaded80,0005000000000000000000000000000
    1 1/2"0.28"0.148"Fully Threaded80,0005000000000000000000000000000
     
    10-24
    1/2"0.375"0.15"Fully Threaded80,0005000000000000000000000000000
    3/4"0.375"0.15"Fully Threaded80,0005000000000000000000000000000
    1"0.375"0.15"Fully Threaded80,000250000000000000000000000000
    1 1/2"0.375"0.15"Fully Threaded80,000250000000000000000000000000
     
    10-32
    1/2"0.375"0.15"Fully Threaded80,0005000000000000000000000000000
    3/4"0.375"0.15"Fully Threaded80,0005000000000000000000000000000
    1"0.375"0.15"Fully Threaded80,0005000000000000000000000000000
    1 1/2"0.375"0.15"Fully Threaded80,000250000000000000000000000000
     
    1/4"-20
    1/2"0.375"0.155"Fully Threaded80,0005000000000000000000000000000
    3/4"0.375"0.155"Fully Threaded80,0005000000000000000000000000000
    1"0.375"0.155"Fully Threaded80,000250000000000000000000000000
    1 1/2"0.375"0.155"Fully Threaded80,000250000000000000000000000000
    2"0.375"0.155"Fully Threaded80,0002500000000000000000000000000
    2 1/2"0.375"0.155"Partially Threaded80,000100000000000000000000000000
     
    5/16"-18
    5/8"0.57"0.275"Fully Threaded80,0002500000000000000000000000000
    3/4"0.57"0.275"Fully Threaded80,0002500000000000000000000000000
    1"0.57"0.275"Fully Threaded80,0002500000000000000000000000000
     
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