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    54 Products

    Press-Fit Locknuts for Sheet Metal

    Image of Product. Bottom orientation. Press-Fit Nuts.  Press-Fit Locknuts for Sheet Metal.
    Image of Product. Bottom orientation. Press-Fit Nuts.  Press-Fit Locknuts for Sheet Metal.
    The nylon insert inside these nuts grips screws so they won't back out or loosen. Use them to keep thin parts fastened on engines and other vibrating machinery.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Cadmium Yellow-Chromate-Plated Steel—Thread fasteners on these nuts smoothly without sticking. The plating also creates a stronger barrier against rust than zinc.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust and mild chemicals.
    Thread
    Size
    Drill Bit
    Size
    For Min.
    Panel Thk.
    For Maximum Panel
    Hardness
    Head
    Ht.
    Flange
    Dia.
    PEM® Part
    No.
    Pkg.
    Qty.
    Pkg.
    Nylon-Insert Locking
     
    Steel
    4-40
    5/32"
    0.05"Brinell 205, Rockwell B950.09"0.2"1000000000000000
    6-32
    3/16"
    0.05"Brinell 205, Rockwell B950.13"0.28"100000000000000
    8-32
    7/32"
    0.05"Brinell 205, Rockwell B950.16"0.31"100000000000000
     
    Zinc-Plated Steel
    M3 x 0.5 mm6 mm
    1.5 mmBrinell 125, Rockwell B703 mm7 mmPL-M3-ZI100000000000000
    M4 x 0.7 mm7.5 mm
    1.5 mmBrinell 125, Rockwell B704 mm8.5 mmPL-M4-ZI100000000000000
    M5 x 0.8 mm8 mm
    1.5 mmBrinell 125, Rockwell B704 mm9 mmPL-M5-ZI100000000000000
     
    Cadmium Yellow-Chromate-Plated Steel
    6-32
    3/16"
    0.05"Brinell 205, Rockwell B950.13"0.28"100000000000000
    10-32
    1/4"
    0.05"Brinell 205, Rockwell B950.18"0.34"1000000000000000
     
    18-8 Stainless Steel
    2-56
    1/8"
    0.05"Brinell 240, Rockwell B1000.08"0.17"1000000000000000
    4-40
    5/32"
    0.05"Brinell 205, Rockwell B950.09"0.2"100000000000000
    6-32
    3/16"
    0.05"Brinell 205, Rockwell B950.13"0.28"1000000000000000
    8-32
    7/32"
    0.05"Brinell 190, Rockwell B900.16"0.31"1000000000000000
    10-32
    1/4"
    0.05"Brinell 190, Rockwell B900.18"0.34"1000000000000000
    M4 x 0.7 mm7.5 mm
    1.5 mmBrinell 125, Rockwell B704 mm8.5 mmPLC-M450000000000000
    M5 x 0.8 mm8 mm
    1.5 mmBrinell 125, Rockwell B704 mm9 mmPLC-M550000000000000
     

    Self-Aligning Press-Fit Locknuts for Sheet Metal

    Image of Product. Front orientation. Press-Fit Nuts. Self-Aligning Press-Fit Locknuts for Sheet Metal.
    Image of Product. Front orientation. Press-Fit Nuts. Self-Aligning Press-Fit Locknuts for Sheet Metal.
    Fasten together unaligned parts and keep screws in place. The threaded hole within these press-fit nuts shifts up to .01" in any direction, so you can fasten together thin panels with off-center holes. The irregularly shaped threads tightly grip screws to prevent them from loosening or backing out under vibration.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust and mild chemicals.
    Head
    Barrel
    Thread
    Size
    Drill Bit
    Size
    For Min.
    Panel Thk.
    For Maximum Panel
    Hardness
    OD
    Ht.
    Dia.
    Ht.
    PEM® Part
    No.
    Pkg.
    Qty.
    Pkg.
    Distorted-Thread Locking
     
    18-8 Stainless Steel
    4-40
    L
    0.038"Brinell 125, Rockwell B700.36"0.038"9/64"3/16"LAC-440-1MD500000000000000
    4-40
    L
    0.054"Brinell 125, Rockwell B700.36"0.054"9/64"3/16"LAC-440-2MD50000000000000
    6-32
    21/64"
    0.038"Brinell 125, Rockwell B700.39"0.038"3/16"13/64"LAC-632-1MD500000000000000
    6-32
    21/64"
    0.054"Brinell 125, Rockwell B700.39"0.054"3/16"13/64"LAC-632-2MD500000000000000
    8-32
    U
    0.038"Brinell 125, Rockwell B700.44"0.038"15/64"13/64"LAC-832-1MD500000000000000
    8-32
    U
    0.054"Brinell 125, Rockwell B700.44"0.054"15/64"13/64"LAC-832-2MD500000000000000
    10-24
    13/32"
    0.054"Brinell 125, Rockwell B700.47"0.054"7/32"17/64"LAC-024-2MD500000000000000
    10-32
    13/32"
    0.038"Brinell 125, Rockwell B700.47"0.038"7/32"17/64"LAC-032-1MD500000000000000
    10-32
    13/32"
    0.054"Brinell 125, Rockwell B700.47"0.054"17/64"17/64"LAC-032-2MD500000000000000
    1/4"-20
    33/64"
    0.054"Brinell 125, Rockwell B700.6"0.054"11/32"5/16"LAC-0420-2MD10000000000000
    M3 x 0.5 mm7.4 mm
    0.97 mmBrinell 125, Rockwell B709.14 mm0.97 mm4.2 mm4.8 mmLAC-M3-1MD500000000000000
    M3 x 0.5 mm7.4 mm
    1.38 mmBrinell 125, Rockwell B709.14 mm1.38 mm3.6 mm4.8 mmLAC-M3-2MD500000000000000
    M4 x 0.7 mm9.4 mm
    0.97 mmBrinell 125, Rockwell B7011.18 mm0.97 mm4.8 mm5.3 mmLAC-M4-1MD500000000000000
    M4 x 0.7 mm9.4 mm
    1.38 mmBrinell 125, Rockwell B7011.18 mm1.38 mm4.8 mm5.3 mmLAC-M4-2MD500000000000000
    M5 x 0.8 mm10.3 mm
    0.97 mmBrinell 125, Rockwell B7011.94 mm0.97 mm6 mm6.9 mmLAC-M5-1MD500000000000000
    M5 x 0.8 mm10.3 mm
    1.38 mmBrinell 125, Rockwell B7011.94 mm1.38 mm6 mm6.9 mmLAC-M5-2MD500000000000000
    M6 x 1 mm13.1 mm
    1.38 mmBrinell 125, Rockwell B7015.24 mm1.38 mm7.2 mm7.9 mmLAC-M6-2MD10000000000000
     

    Weld Locknuts

    Image of Product. Bottom orientation. Weld Nuts. Weld Locknuts.
    Image of Product. Bottom orientation. Weld Nuts. Weld Locknuts.
    Prevent screws from backing out under heavy vibration. These nuts have distorted threads that grip screws tightly. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. These nuts also have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter.
    Use Grade 2 or Class 6 screws to avoid stripping threads during installation. Distorted threads require high torque for fastening and unfastening, so you may need an impact wrench to remove screws.
    Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.
    Collar
    Thread Size
    Wd.
    Ht.
    Dia.
    Ht.
    For Hole
    Dia.
    Pkg.
    Qty.
    Pkg.
    Steel
    10-24
    1/2"3/16"13/32"0.04"27/64"1000000000000000
    10-32
    1/2"3/16"13/32"0.04"27/64"100000000000000
    1/4"-20
    15/32"11/64"13/32"0.04"27/64"10000000000000000
    1/4"-20
    1/2"3/16"13/32"0.085"27/64"250000000000000
    5/16"-18
    35/64"13/64"15/32"0.04"31/64"10000000000000000
    5/16"-18
    9/16"7/32"15/32"0.085"31/64"100000000000000
    3/8"-16
    39/64"15/64"17/32"0.05"35/64"5000000000000000
    3/8"-16
    5/8"1/4"17/32"0.085"35/64"100000000000000
    1/2"-13
    25/32"23/64"23/32"0.06"47/64"5000000000000000
    1/2"-13
    25/32"23/64"23/32"0.085"47/64"5000000000000000
    5/8"-11
    59/64"27/64"25/32"0.085"51/64"2500000000000000
    5/8"-11
    15/16"7/16"25/32"0.085"51/64"50000000000000
    M5 × 0.8 mm11 mm5.5 mm7.6 mm0.9 mm7.6 mm100000000000000
    M6 × 1 mm12.7 mm5.1 mm8.8 mm1 mm8.8 mm10000000000000000
    M6 × 1 mm13 mm5.5 mm9.1 mm1.6 mm9.1 mm250000000000000
    M8 × 1.25 mm14.7 mm6.6 mm10.9 mm1 mm10.9 mm5000000000000000
    M8 × 1.25 mm15 mm7 mm11.1 mm1.8 mm11.1 mm100000000000000
    M10 × 1.5 mm17.7 mm7.7 mm13.4 mm1.16 mm13.4 mm5000000000000000
    M10 × 1.5 mm18 mm8 mm13.6 mm1.8 mm13.6 mm100000000000000
    M12 × 1.75 mm20.6 mm9.4 mm15.9 mm1.26 mm15.9 mm5000000000000000
    M12 × 1.75 mm21 mm9.7 mm16.1 mm1.8 mm16.1 mm100000000000000
    M16 × 2 mm26 mm13 mm20.6 mm1.3 mm20.6 mm50000000000000
     
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