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    208 Products

    Left-Hand-Thread Thin-Profile Hex Nuts
    3D CAD models available

    These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Medium-Strength Steel
    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Thin-Profile Hex Nuts.
    These Grade 5 or Class 04 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    1/4"-20
    7/16"5/32"SAE Grade 5
    __100000000000000000
    1/4"-28
    7/16"5/32"SAE Grade 5
    __10000000000000000
    5/16"-18
    1/2"3/16"SAE Grade 5
    __5000000000000000
    5/16"-24
    1/2"3/16"SAE Grade 5
    __5000000000000000
    3/8"-16
    9/16"7/32"SAE Grade 5
    __5000000000000000
    3/8"-24
    9/16"7/32"SAE Grade 5
    __5000000000000000
    7/16"-14
    11/16"1/4"SAE Grade 5
    __5000000000000000
    7/16"-20
    11/16"1/4"SAE Grade 5
    __2500000000000000
    1/2"-13
    3/4"5/16"SAE Grade 5
    __2500000000000000
    1/2"-20
    3/4"5/16"SAE Grade 5
    __2500000000000000
    9/16"-18
    7/8"5/16"SAE Grade 5
    __1000000000000000
    5/8"-11
    15/16"3/8"SAE Grade 5
    __100000000000000
    5/8"-18
    15/16"3/8"SAE Grade 5
    __100000000000000
    3/4"-10
    1 1/8"27/64"SAE Grade 5
    __1000000000000000
    3/4"-16
    1 1/8"27/64"SAE Grade 5
    __1000000000000000
    7/8"-9
    1 5/16"31/64"SAE Grade 5
    __500000000000000
    7/8"-14
    1 5/16"31/64"SAE Grade 5
    __500000000000000
    1"-8
    1 1/2"35/64"SAE Grade 5
    __10000000000000
    1"-14
    1 1/2"35/64"SAE Grade 5
    __10000000000000
    1 1/8"-7
    1 11/16"39/64"SAE Grade 5
    __100000000000000
    1 1/8"-12
    1 11/16"39/64"SAE Grade 5
    __10000000000000
    1 1/4"-7
    1 7/8"23/32"SAE Grade 5
    __10000000000000
    1 1/4"-12
    1 7/8"23/32"SAE Grade 5
    __100000000000000
    1 1/2"-6
    2 1/4"27/32"SAE Grade 5
    __100000000000000
    1 1/2"-12
    2 1/4"27/32"SAE Grade 5
    __100000000000000
    2"-12
    3"1 3/32"SAE Grade 5
    __1000000000000000
     
    Black-Oxide Steel
    M3 × 0.5 mm5.5 mm1.8 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M5 × 0.5 mm8 mm2.7 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M5 × 0.8 mm8 mm2.7 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M6 × 0.75 mm10 mm3.2 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M8 × 1 mm13 mm4 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M8 × 1.25 mm13 mm4 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M10 × 1 mm17 mm5 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M10 × 1.5 mm17 mm5 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M14 × 1.5 mm22 mm7 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M16 × 1.5 mm24 mm8 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M16 × 2 mm24 mm8 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M18 × 1.5 mm27 mm9 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M18 × 2.5 mm27 mm9 mmISO Class 04
    ASTM A108, DIN 439B, ISO 403510000000000000
    M20 × 1.5 mm30 mm10 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M20 × 2.5 mm30 mm10 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M22 × 1.5 mm32 mm11 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M22 × 2.5 mm32 mm11 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M24 × 1.5 mm36 mm12 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M27 × 1.5 mm41 mm13.5 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M27 × 2 mm41 mm13.5 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M30 × 1.5 mm46 mm15 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M30 × 2 mm46 mm15 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M30 × 3.5 mm46 mm15 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
    M33 × 3.5 mm50 mm16.5 mmISO Class 04
    ASTM A108, DIN 439B, ISO 4035100000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Thin-Profile Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    5-40
    5/16"3/32"SAE Grade 2
    ASTM A108100000000000000
    8-32
    11/32"7/64"SAE Grade 2
    ASTM A10810000000000000
    10-24
    3/8"7/64"SAE Grade 2
    ASTM A10810000000000000
    10-32
    3/8"7/64"SAE Grade 2
    ASTM A10810000000000000
    5/16"-24
    1/2"3/16"SAE Grade 2
    ASTM A10810000000000000
    3/8"-16
    9/16"7/32"SAE Grade 2
    ASTM A10810000000000000
    3/8"-24
    9/16"7/32"SAE Grade 2
    ASTM A10810000000000000
    1/2"-13
    3/4"5/16"SAE Grade 2
    ASTM A10810000000000000
    1/2"-20
    3/4"5/16"SAE Grade 2
    ASTM A10810000000000000
    5/8"-11
    15/16"3/8"SAE Grade 2
    ASTM A10810000000000000
    7/8"-20
    1 5/16"31/64"SAE Grade 2
    ASTM A108100000000000000
    1"-12
    1 1/2"35/64"SAE Grade 2
    ASTM A108100000000000000
    1 1/4"-7
    1 7/8"23/32"SAE Grade 2
    ASTM A108100000000000000
    1 1/4"-12
    1 7/8"23/32"SAE Grade 2
    ASTM A108100000000000000
    1 1/2"-6
    2 1/4"27/32"SAE Grade 2
    ASTM A108100000000000000
    2"-4 1/2
    3"1 3/32"SAE Grade 2
    ASTM A108100000000000000
    2"-12
    3"1 3/32"SAE Grade 2
    ASTM A108100000000000000
     
    Steel
    1/4"-20
    7/16"5/32"SAE Grade 2
    __500000000000000
    1/4"-28
    7/16"5/32"SAE Grade 2
    __10000000000000000
    5/16"-18
    1/2"3/16"SAE Grade 2
    __500000000000000
    5/16"-24
    1/2"3/16"SAE Grade 2
    __10000000000000000
    3/8"-16
    9/16"7/32"SAE Grade 2
    __250000000000000
    3/8"-24
    9/16"7/32"SAE Grade 2
    __5000000000000000
    1/2"-13
    3/4"5/16"SAE Grade 2
    __2500000000000000
    1/2"-20
    3/4"5/16"SAE Grade 2
    __2500000000000000
    5/8"-11
    15/16"3/8"SAE Grade 2
    __1000000000000000
    5/8"-18
    15/16"3/8"SAE Grade 2
    __1000000000000000
    3/4"-10
    1 1/8"27/64"SAE Grade 2
    __1000000000000000
    3/4"-16
    1 1/8"27/64"SAE Grade 2
    __1000000000000000
    1"-8
    1 1/2"35/64"SAE Grade 2
    __500000000000000
    1"-14
    1 1/2"35/64"SAE Grade 2
    __500000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Thin-Profile Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    4-40
    1/4"1/16"__100000000000000
    5-40
    5/16"3/32"__10000000000000
    6-32
    5/16"3/32"__10000000000000
    8-32
    11/32"7/64"__10000000000000
    10-24
    3/8"7/64"__10000000000000
    10-32
    3/8"7/64"__10000000000000
    12-24
    7/16"9/64"__10000000000000
    1/4"-20
    7/16"5/32"__50000000000000
    1/4"-28
    7/16"5/32"__50000000000000
    5/16"-18
    1/2"3/16"__50000000000000
    5/16"-24
    1/2"3/16"__50000000000000
    3/8"-16
    9/16"7/32"__50000000000000
    3/8"-24
    9/16"7/32"__50000000000000
    7/16"-14
    11/16"1/4"ASME B18.2.210000000000000
    7/16"-20
    11/16"1/4"ASME B18.2.210000000000000
    1/2"-13
    3/4"5/16"__500000000000000
    1/2"-20
    3/4"5/16"__500000000000000
    9/16"-12
    7/8"5/16"ASME B18.2.210000000000000
    9/16"-18
    7/8"5/16"ASME B18.2.210000000000000
    5/8"-11
    15/16"3/8"__10000000000000
    5/8"-18
    15/16"3/8"__10000000000000
    3/4"-10
    1 1/8"27/64"__10000000000000
    3/4"-16
    1 1/8"27/64"__10000000000000
    7/8"-9
    1 5/16"31/64"ASME B18.2.2100000000000000
    7/8"-14
    1 5/16"31/64"ASME B18.2.2100000000000000
    7/8"-20
    1 5/16"31/64"ASME B18.2.2100000000000000
    1"-8
    1 1/2"35/64"ASME B18.2.2100000000000000
    1"-12
    1 1/2"35/64"ASME B18.2.2100000000000000
    1"-14
    1 1/2"35/64"ASME B18.2.2100000000000000
    1 1/4"-7
    1 7/8"23/32"ASME B18.2.2100000000000000
    1 1/4"-12
    1 7/8"23/32"ASME B18.2.2100000000000000
    1 1/2"-6
    2 1/4"27/32"ASME B18.2.2100000000000000
    1 1/2"-12
    2 1/4"27/32"ASME B18.2.2100000000000000
    2"-4 1/2
    3"1 3/32"ASME B18.2.2100000000000000
    2"-12
    3"1 3/32"ASME B18.2.2100000000000000
    M3 × 0.35 mm5.5 mm1.8 mmDIN 439B10000000000000
    M3 × 0.5 mm5.5 mm1.8 mmDIN 439B10000000000000
    M4 × 0.5 mm7 mm2.2 mmDIN 439B10000000000000
    M4 × 0.7 mm7 mm2.2 mmDIN 439B10000000000000
    M5 × 0.5 mm8 mm2.7 mmDIN 439B10000000000000
    M5 × 0.8 mm8 mm2.7 mmDIN 439, ISO 4035100000000000000
    M5 × 0.8 mm8 mm2.7 mmDIN 439B10000000000000
    M6 × 0.75 mm10 mm3.2 mmDIN 439B10000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439, ISO 4035100000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439B10000000000000
    M8 × 1 mm13 mm4 mmDIN 439, ISO 403550000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439, ISO 4035100000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439B10000000000000
    M10 × 1 mm17 mm5 mmDIN 439B10000000000000
    M10 × 1.25 mm17 mm5 mmDIN 439, ISO 403510000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439, ISO 403550000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439B10000000000000
    M12 × 1.25 mm19 mm6 mmDIN 439, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439B10000000000000
    M14 × 1.5 mm22 mm7 mmDIN 439B10000000000000
    M14 × 2 mm22 mm7 mmDIN 439, ISO 403510000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439, ISO 403510000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439B10000000000000
    M16 × 2 mm24 mm8 mmDIN 439, ISO 403510000000000000
    M16 × 2 mm24 mm8 mmDIN 439B10000000000000
    M20 × 1.5 mm30 mm10 mmDIN 439B100000000000000
    M20 × 2.5 mm30 mm10 mmDIN 439, ISO 403510000000000000
    M22 × 1.5 mm32 mm11 mmDIN 439B100000000000000
    M22 × 2.5 mm32 mm11 mmDIN 439B100000000000000
    M24 × 1.5 mm36 mm12 mmDIN 439B100000000000000
    M24 × 3 mm36 mm12 mmDIN 439, ISO 4035100000000000000
    M27 × 1.5 mm41 mm13.5 mmDIN 439B100000000000000
    M27 × 2 mm41 mm13.5 mmDIN 439B100000000000000
    M30 × 1.5 mm46 mm15 mmDIN 439B100000000000000
    M30 × 2 mm46 mm15 mmDIN 439B100000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    4-40
    1/4"1/16"__10000000000000
    6-32
    5/16"3/32"__10000000000000
    8-32
    11/32"7/64"__10000000000000
    10-24
    3/8"7/64"__10000000000000
    10-32
    3/8"7/64"__10000000000000
    1/4"-20
    7/16"5/32"__10000000000000
    1/4"-28
    7/16"5/32"__10000000000000
    5/16"-24
    1/2"3/16"__10000000000000
    3/8"-16
    9/16"7/32"__10000000000000
    3/8"-24
    9/16"7/32"__10000000000000
    7/16"-20
    11/16"1/4"__10000000000000
    1/2"-13
    3/4"5/16"__10000000000000
    1/2"-20
    3/4"5/16"__10000000000000
    9/16"-18
    7/8"5/16"__100000000000000
    5/8"-18
    15/16"3/8"__100000000000000
    3/4"-10
    1 1/8"27/64"__100000000000000
    3/4"-16
    1 1/8"27/64"__100000000000000
    1"-12
    1 1/2"35/64"__100000000000000
    1"-14
    1 1/2"35/64"__100000000000000
    1 1/4"-12
    1 7/8"23/32"__100000000000000
    1 1/2"-6
    2 1/4"27/32"__100000000000000
    2"-12
    3"1 3/32"__100000000000000
    M5 × 0.5 mm8 mm2.7 mmDIN 439B, ISO 403510000000000000
    M6 × 0.75 mm10 mm3.2 mmDIN 439B, ISO 403510000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439B, ISO 403510000000000000
    M8 × 1 mm13 mm4 mmDIN 439B, ISO 403510000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439B, ISO 403510000000000000
    M10 × 1 mm17 mm5 mmDIN 439B, ISO 403510000000000000
    M10 × 1.25 mm17 mm5 mmDIN 439B10000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439B, ISO 403510000000000000
    M12 × 1.25 mm19 mm6 mmDIN 439B10000000000000
    M12 × 1.5 mm19 mm6 mmDIN 439B, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439B, ISO 403510000000000000
    M14 × 1.5 mm22 mm7 mmDIN 439B, ISO 4035100000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439B, ISO 4035100000000000000
    M16 × 2 mm24 mm8 mmDIN 439B, ISO 4035100000000000000
    M18 × 1.5 mm27 mm9 mmDIN 439B, ISO 4035100000000000000
    M20 × 1.5 mm30 mm10 mmDIN 439B, ISO 4035100000000000000
    M22 × 1.5 mm32 mm11 mmDIN 439B, ISO 4035100000000000000
    M24 × 2 mm36 mm12 mmDIN 439B, ISO 4035100000000000000
    M30 × 1.5 mm46 mm15 mmDIN 439B, ISO 4035100000000000000
     
    Brass
    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Thin-Profile Hex Nuts.
    Brass—Conductive and nonmagnetic, brass nuts are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures. They're also softer than most metals, so they won't damage other fastening components.
    Thread Size
    Wd.
    Ht.
    Specs. Met
    Each
    Brass
    6-32
    5/16"3/32"__00000000000000
    8-32
    11/32"7/64"__0000000000000
    10-32
    3/8"7/64"__0000000000000
    5/8"-18
    15/16"3/8"__00000000000000
    3/4"-10
    1 1/8"27/64"__00000000000000
    1"-12
    1 1/2"35/64"__00000000000000
    1"-14
    1 1/2"35/64"__00000000000000
    1 1/4"-7
    1 7/8"23/32"__00000000000000
    1 1/2"-12
    2 1/4"27/32"__00000000000000
    M5 × 0.8 mm8 mm2.7 mmDIN 439B, ISO 40350000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439B, ISO 40350000000000000
    M14 × 1.5 mm22 mm7 mmDIN 439B, ISO 403500000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439B, ISO 403500000000000000
    M18 × 1.5 mm27 mm9 mmDIN 439B, ISO 403500000000000000
     
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