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    27 Products

    Precision Acme Lead Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts.
    Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
    Round Nuts—Right-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Round Nuts—Right-Hand Thread.
    Iron—Iron nuts have good machinability and high strength.
    932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
    PET—PET plastic nuts are lightweight and corrosion resistant.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Dynamic Thrust
    Load Cap., lb.
    Temp.,
    ° F
    Each
    Iron
    3/8"-8
    		3/4"1.344"Stub Acme1:110.125"Acme Class 2C
    		Brinell 217Not RatedNot Rated—95365A521000000
     
    932 Bearing Bronze
    3/8"-8
    		3/4"1.344"Acme
    		1:110.125"Acme Class 2C
    		Brinell 65Not Rated700—1343K13100000
     
    PET
    3/8"-8
    		3/4"1.344"Acme
    		1:110.125"Acme Class 2C
    		Not RatedNot Rated35015 to 1751349K13400000
     
    Round Nuts—Left-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Round Nuts—Left-Hand Thread.
    Iron—Iron nuts have good machinability and high strength.
    932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
    PET—PET plastic nuts are lightweight and corrosion resistant.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Dynamic Thrust
    Load Cap., lb.
    Temp.,
    ° F
    Each
    Iron
    3/8"-8
    		3/4"1.344"Stub Acme1:110.125"Acme Class 2C
    		Brinell 217Not RatedNot Rated—95365A621000000
     
    932 Bearing Bronze
    3/8"-8
    		3/4"1.344"Acme
    		1:110.125"Acme Class 2C
    		Brinell 65Not Rated700—1343K23100000
     
    PET
    3/8"-8
    		3/4"1.344"Acme
    		1:110.125"Acme Class 2C
    		Not RatedNot Rated35015 to 1751349K13500000
     
    Externally Threaded Nuts—Right-Hand Thread
    Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Right-Hand Thread.
    Combine externally threaded nuts with a flange to create a custom flange nut.
    673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
    PET—PET plastic nuts are lightweight and corrosion resistant.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    External
    Thread
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Size
    Lg.
    Thread Fit
    Hardness
    Tensile
    Strength
    Dynamic Thrust
    Load Cap., lb.
    Temp.,
    ° F
    Each
    673 Bronze
    3/8"-8
    		5/8"0.688"Stub Acme1:110.125"9/16"-18
    		3/8"Acme Class 2C
    		Brinell 70Not RatedNot Rated—95072A124000000
     
    PET
    3/8"-8
    		5/8"0.688"Acme
    		1:110.125"9/16"-18
    		3/8"Acme Class 2C
    		Not RatedNot Rated35015 to 17595075A22400000
     
    Flanges
    Image of Product. Front orientation. Precision Lead Screw Nut Flanges.
    Image of Attribute. Front orientation. Contains Annotated.
    Thread onto an externally threaded acme nut to create a custom flange nut.
    Black-Oxide 1117 Carbon Steel—Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color.
    1215 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.
    303 Stainless Steel—303 stainless steel flanges have good corrosion resistance.
    Flange Thread
    Size
    Flange
    Dia.
    Flange
    Thk.
    Bolt Circle
    Dia.
    Flange
    Hardness
    Each
    Black-Oxide 1117 Carbon Steel
    9/16"-18
    		1 39/64"13/32"1 1/8"Brinell 1351329K101000000
     
    1215 Carbon Steel
    9/16"-18
    		1 39/64"13/32"1 1/8"Not Rated95082A64100000
     
    303 Stainless Steel
    9/16"-18
    		1 39/64"13/32"1 1/8"Brinell 1401329K1100000
     

    Corrosion-Resistant Ball Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Ball Screws and Nuts. Corrosion-Resistant Ball Screws and Nuts.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Corrosion-Resistant Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut, Style A.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Corrosion-Resistant Ball Screws and Nuts, Flange Nut, Ball Nuts, Style C.

    Ball Nuts,

    Externally

    Threaded

    Nut, Style A

    Flange Nut

    Ball Nuts

    Style C

    Suitable for use in harsh environments, these ball screws and nuts are made of stainless steel. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.
    Externally Threaded Ball Nuts—Right-Hand Threaded
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Corrosion-Resistant Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut, Style A.

    Style A

    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Style
    Thread
    Size
    Lg.
    Dia.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    External Thread
    Size
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max.
    Backlash
    Temp. Range,
    ° F
    Each
    17-4 PH Stainless Steel
    A3/8"-8
    		1"3/4"10.125"0.664"-32
    		Rockwell C38250.007"-65 to 3006641K90000000
     
    Flange Ball Nuts—Right-Hand Threaded
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Corrosion-Resistant Ball Screws and Nuts, Flange Nut, Ball Nuts, Style C.
    Image of Attribute. Front orientation. Contains Annotated. Corrosion-Resistant Ball Screws and Nuts.

    Style C

    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Flange
    Style
    Thread
    Size
    Lg.
    Dia.
    Dia.
    Thk.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Bolt Circle
    Dia.
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max.
    Backlash
    Temp. Range,
    ° F
    Each
    17-4 PH Stainless Steel
    C3/8"-8
    		1"3/4"1 19/32"17/64"10.125"1 15/64"Rockwell C38250.007"-65 to 3006641K210000000
     

    Ball Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Ball Screws and Nuts. Ball Screws and Nuts .
    Image of Product. A. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Ball Nuts, Externally Threaded Nut, Style A.
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Flange Nut, Ball Nuts, Style D.

    A

    Flange Nut

    Ball Nuts

    Style D

    Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread direction and size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.
    Externally Threaded Ball Nuts—Right-Hand Threaded
    Image of Product. A. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Ball Nuts, Externally Threaded Nut, Style A.

    A

    Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Style
    Thread
    Size
    Lg.
    Dia.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    External Thread
    Size
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max.
    Backlash
    Temp. Range,
    ° F
    Each
    Black-Oxide Alloy Steel
    A3/8"-8
    		1"3/4"10.125"11/16"-28Rockwell C561700.015"-65 to 3003405N4580000000
     
    Flange Ball Nuts—Right-Hand Threaded
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Flange Nut, Ball Nuts, Style D.
    Image of Attribute. Front orientation. Contains Annotated. Ball Screws and Nuts .

    Style D

    Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Flange
    Style
    Thread
    Size
    Lg.
    Dia.
    Dia.
    Thk.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Bolt Circle
    Dia.
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max.
    Backlash
    Temp. Range,
    ° F
    Each
    Black-Oxide Alloy Steel
    D3/8"-8
    		1 1/64"3/4"1 19/32"9/32"10.125"1 15/64"Rockwell C561700.015"-65 to 3003405N4690000000
     

    Fast-Travel Precision Acme Lead Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Precision Lead Screws and Nuts. Fast-Travel Precision Acme Lead Screws and Nuts.
    Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. The threads have a tight thread fit for accurate, repeatable starts and stops. Pair with a motor in automated motion and positioning applications. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
    Round Nuts—Right-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Fast-Travel Precision Acme Lead Screws and Nuts, Round Nuts—Right-Hand Thread.
    Iron—Iron nuts have good machinability and high strength.
    932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
    PET—PET plastic nuts are lightweight and corrosion resistant.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Dynamic Thrust
    Load Cap., lb.
    Temp.,
    ° F
    Each
    Iron
    3/8"-8
    		3/4"1.344"Stub Acme2:120.25"Acme Class 2C
    		Brinell 217Not RatedNot Rated—95365A504000000
    3/8"-8
    		3/4"1.344"Stub Acme4:140.5"Acme Class 2C
    		Brinell 217Not RatedNot Rated—95365A50100000
     
    932 Bearing Bronze
    3/8"-8
    		3/4"1.344"Acme
    		2:120.25"Acme Class 2C
    		Brinell 65Not Rated700—1343K11400000
    3/8"-8
    		3/4"1.344"Acme
    		4:140.5"Acme Class 2C
    		Brinell 65Not Rated700—1343K11100000
     
    PET
    3/8"-8
    		3/4"1.344"Acme
    		2:120.25"Acme Class 2C
    		Not RatedNot Rated35015 to 1751349K10700000
    3/8"-8
    		3/4"1.344"Acme
    		4:140.5"Acme Class 2C
    		Not RatedNot Rated35015 to 1751349K10100000
     
    Round Nuts—Left-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Fast-Travel Precision Acme Lead Screws and Nuts, Round Nuts—Left-Hand Thread.
    932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Dynamic Thrust
    Load Cap., lb.
    Each
    932 Bearing Bronze
    3/8"-8
    		3/4"1.344"Acme
    		2:120.25"Acme Class 2C
    		Brinell 65Not Rated7001343K214000000
    3/8"-8
    		3/4"1.344"Acme
    		4:140.5"Acme Class 2C
    		Brinell 65Not Rated7001343K21100000
     
    Externally Threaded Nuts—Right-Hand Thread
    Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Fast-Travel Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Right-Hand Thread.
    Combine externally threaded nuts with a flange to create a custom flange nut.
    673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
    PET—PET plastic nuts are lightweight and corrosion resistant.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    External
    Thread
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Size
    Lg.
    Thread Fit
    Hardness
    Tensile
    Strength
    Dynamic Thrust
    Load Cap., lb.
    Temp.,
    ° F
    Each
    673 Bronze
    3/8"-8
    		5/8"0.688"Stub Acme2:120.25"9/16"-18
    		3/8"Acme Class 2C
    		Brinell 70Not RatedNot Rated—95072A126000000
    3/8"-8
    		5/8"0.688"Stub Acme4:140.5"9/16"-18
    		3/8"Acme Class 2C
    		Brinell 70Not RatedNot Rated—95072A12500000
     
    PET
    3/8"-8
    		5/8"0.688"Acme
    		2:120.25"9/16"-18
    		3/8"Acme Class 2C
    		Not RatedNot Rated35015 to 17595075A22600000
    3/8"-8
    		5/8"0.688"Acme
    		4:140.5"9/16"-18
    		3/8"Acme Class 2C
    		Not RatedNot Rated35015 to 17595075A22500000
     
    Flanges
    Image of Product. Front orientation. Precision Lead Screw Nut Flanges.
    Image of Attribute. Front orientation. Contains Annotated.
    Thread onto an externally threaded acme nut to create a custom flange nut.
    1215 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.
    303 Stainless Steel—303 stainless steel flanges have good corrosion resistance.
    Flange Thread
    Size
    Flange
    Dia.
    Flange
    Thk.
    Bolt Circle
    Dia.
    Flange
    Hardness
    Each
    1215 Carbon Steel
    9/16"-18
    		1 39/64"13/32"1 1/8"Not Rated95082A641000000
     
    303 Stainless Steel
    9/16"-18
    		1 39/64"13/32"1 1/8"Brinell 1401329K1100000
     
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