McMaster-Carr logo
    Filter by
    System of Measurement
    Drive Style
    Industrial Info Snippet
    Thread Type
    Industrial Info Compare
    Thread Direction
    Thread Spacing
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Snippet
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    65 Products

    Steel Socket Nuts

    Image of Product. Front orientation. Socket Nuts. Steel Socket Nuts.
    Also known as Allen nuts, use these with socket head cap screws in recessed holes and tight spaces that don't have enough clearance for a wrench. Tighten them with a 6-point hex key. They can also be used as an insert by pressing or drawing them into nonhardened steel, cast iron, or soft nonferrous metal or by molding them into plastic, ceramic, fiber, and similar materials. Made from alloy steel, they're comparable in strength to Grade 9 bolts.
    Thread Size
    OD
    Ht.
    Threading
    Thread
    Dp.
    For Hole
    Dia.
    Hex Key
    Size
    Certificate Type
    Each
    Alloy Steel
    4-40
    0.18"0.17"Partially Threaded0.08"0.202"1/8"Material Certificate
    92066A00500000
    5-40
    0.18"0.2"Partially Threaded0.1"0.202"1/8"92066A0060000
    6-32
    1/4"0.22"Partially Threaded0.1"0.27"5/32"Material Certificate
    92066A0070000
    8-32
    0.28"0.27"Partially Threaded0.13"0.298"3/16"Material Certificate
    92066A0090000
    10-24
    0.3"0.31"Partially Threaded0.17"0.327"3/16"Material Certificate
    92066A0110000
    10-32
    0.3"0.31"Partially Threaded0.17"0.327"3/16"Material Certificate
    92067A0110000
    1/4"-20
    0.4"0.41"Partially Threaded0.23"0.421"1/4"Material Certificate
    92066A0290000
    1/4"-28
    0.4"0.41"Partially Threaded0.23"0.421"1/4"92067A0290000
    5/16"-18
    1/2"1/2"Partially Threaded0.29"0.516"5/16"Material Certificate
    92066A0300000
    5/16"-24
    0.49"0.51"Partially Threaded0.29"0.516"5/16"Material Certificate
    92067A0300000
    3/8"-16
    0.59"0.61"Partially Threaded0.33"0.61"3/8"Material Certificate
    92066A0310000
    3/8"-24
    0.59"0.61"Partially Threaded0.33"0.61"3/8"Material Certificate
    92067A0310000
    7/16"-14
    0.71"0.72"Partially Threaded0.36"0.733"7/16"92066A0320000
    7/16"-20
    0.71"0.72"Partially Threaded0.36"0.733"7/16"92067A0320000
    1/2"-13
    0.8"0.82"Partially Threaded0.45"0.831"1/2"Material Certificate
    92066A0330000
    1/2"-20
    0.8"0.82"Partially Threaded0.45"0.831"1/2"Material Certificate
    92067A0330000
    5/8"-11
    0.98"1"Partially Threaded0.5"1.028"5/8"Material Certificate
    92066A0350000
    5/8"-18
    0.98"1"Partially Threaded0.5"1.028"5/8"Material Certificate
    92067A0350000
    3/4"-10
    1.15"1.17"Partially Threaded0.6"1.203"3/4"Material Certificate
    92066A03600000
    3/4"-16
    1.15"1.17"Partially Threaded0.6"1.203"3/4"92067A03600000
    7/8"-9
    1.36"1.34"Partially Threaded0.7"1.418"7/8"Material Certificate
    92066A03700000
    7/8"-14
    1.36"1.34"Partially Threaded0.7"1.418"7/8"92067A03700000
    1"-8
    1.53"1.52"Partially Threaded0.81"1.606"1"92066A03800000
    1"-14
    1.53"1.52"Partially Threaded0.81"1.606"1"Material Certificate
    92067A03800000
    M2 × 0.4 mm4 mm5 mmPartially Threaded2 mm4.3 mm3/32"92066A1110000
    M2.5 × 0.45 mm5 mm6 mmPartially Threaded2 mm5.3 mm3/32"92066A1120000
    M3 × 0.5 mm5 mm6 mmPartially Threaded2 mm5.3 mm1/8"92066A1130000
    M4 × 0.7 mm7 mm8 mmPartially Threaded3.3 mm7.6 mm3/16"92066A1140000
    M5 × 0.8 mm8 mm10 mmPartially Threaded4.3 mm8.3 mm3/16"92066A1150000
    M6 × 1 mm10 mm10 mmPartially Threaded4.3 mm10.7 mm1/4"92066A1160000
    M8 × 1.25 mm13 mm12 mmPartially Threaded7.4 mm13.7 mm5/16"92066A1170000
    M10 × 1.5 mm15 mm16 mmPartially Threaded8.4 mm15.7 mm3/8"92066A1180000
    M12 × 1.75 mm18 mm22 mmPartially Threaded9.1 mm18.6 mm7/16"Material Certificate
    92066A1190000
    M14 × 2 mm20 mm24 mmPartially Threaded11.4 mm21.1 mm1/2"92066A1210000
    M16 × 2 mm25 mm26 mmPartially Threaded12.7 mm26 mm9/16"92066A12200000
    M18 × 2.5 mm25 mm30 mmPartially Threaded15 mm26.1 mm5/8"92066A12300000
     

    Stainless Steel Socket Nuts

    Image of Product. Front orientation. Socket Nuts. Stainless Steel Socket Nuts.
    These nuts are chemical resistant and may be mildly magnetic. Also known as Allen nuts, use them with socket head cap screws in recessed holes and tight spaces that don't have enough clearance for a wrench. Tighten them with a 6-point hex key. They can also be used as an insert by pressing or drawing them into nonhardened steel, cast iron, or soft nonferrous metal or by molding them into plastic, ceramic, fiber, and similar materials.
    Thread Size
    OD
    Ht.
    Threading
    Thread
    Dp.
    For Hole
    Dia.
    Hex Key
    Size
    Certificate Type
    Each
    18-8 Stainless Steel
    4-40
    0.18"0.17"Partially Threaded0.08"0.202"1/8"Material Certificate
    90372A31100000
    5-40
    0.19"0.21"Partially Threaded0.1"0.202"1/8"90372A1010000
    6-32
    1/4"0.22"Partially Threaded0.1"0.27"5/32"Material Certificate
    90372A3130000
    8-32
    0.28"0.27"Partially Threaded0.13"0.298"3/16"Material Certificate
    90372A3170000
    10-24
    0.3"0.31"Partially Threaded0.17"0.327"3/16"Material Certificate
    90372A3210000
    10-32
    0.31"0.32"Partially Threaded0.17"0.327"3/16"90372A1020000
    1/4"-20
    0.4"0.41"Partially Threaded0.23"0.421"1/4"Material Certificate
    90372A3250000
    1/4"-28
    0.4"0.42"Partially Threaded0.23"0.421"1/4"90372A1030000
    5/16"-18
    0.49"0.51"Partially Threaded0.29"0.52"5/16"Material Certificate
    90372A3290000
    5/16"-24
    1/2"0.52"Partially Threaded0.29"0.516"5/16"90372A1040000
    3/8"-16
    0.59"0.61"Partially Threaded0.33"0.61"3/8"Material Certificate
    90372A3320000
    3/8"-24
    0.59"0.62"Partially Threaded0.33"0.61"3/8"90372A1050000
    7/16"-14
    0.71"0.73"Partially Threaded0.36"0.733"7/16"90372A10600000
    1/2"-13
    0.8"0.84"Partially Threaded0.45"0.831"1/2"90372A10800000
    1/2"-20
    0.8"0.84"Partially Threaded0.45"0.831"1/2"90372A10900000
    5/8"-11
    0.99"1.01"Partially Threaded1/2"1.028"5/8"Material Certificate
    90372A11000000
    3/4"-10
    1.16"1.19"Partially Threaded0.6"1.203"3/4"Material Certificate
    90372A11200000
    3/4"-16
    1.16"1.19"Partially Threaded0.6"1.203"3/4"Material Certificate
    90372A11300000
    1"-8
    1.53"1.53"Partially Threaded0.81"1.605"1"Material Certificate
    90372A11600000
    M2 × 0.4 mm4 mm5 mmPartially Threaded2 mm4.3 mm3/32"90372A4110000
    M2.5 × 0.45 mm5 mm6 mmPartially Threaded2 mm5.1 mm3/32"90372A4120000
    M3 × 0.5 mm5 mm4.6 mmPartially Threaded2 mm5.1 mm1/8"Material Certificate
    90372A1180000
    M4 × 0.7 mm7 mm6.9 mmPartially Threaded3.3 mm7.6 mm3/16"Material Certificate
    90372A1190000
    M5 × 0.8 mm8 mm8.1 mmPartially Threaded4.3 mm8.3 mm3/16"90372A1200000
    M6 × 1 mm10 mm10.7 mmPartially Threaded5.8 mm10.7 mm1/4"Material Certificate
    90372A1210000
    M8 × 1.25 mm13 mm13.2 mmPartially Threaded7.4 mm13.1 mm5/16"Material Certificate
    90372A1220000
    M10 × 1.5 mm15 mm15.8 mmPartially Threaded8.4 mm15.5 mm3/8"Material Certificate
    90372A1230000
    M12 × 1.75 mm18 mm18.5 mmPartially Threaded9.1 mm18.6 mm7/16"90372A1240000
    M14 × 2 mm20 mm21.3 mmPartially Threaded11.4 mm21.1 mm1/2"90372A12500000
     
    back to top