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    31 Products

    Ultra-Precision Lead Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Precision Lead Screws and Nuts. Ultra-Precision Lead Screws and Nuts.
    Image of Product. Style B. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Ultra-Precision Lead Screws and Nuts, Flange Nuts—Right-Hand Thread, Style B.
    Image of Product. Style C. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Ultra-Precision Lead Screws and Nuts, Flange Nuts—Right-Hand Thread, Style C.

    Style B

    Style C

    Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. 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. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.
    Lead Screws—Right-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Ultra-Precision Lead Screws and Nuts, Lead Screws—Right-Hand Thread.
    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.,
    ft.
    Thread Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Accuracy for Travel
    Distance per Turn
    Hardness
    Tensile Strength,
    psi
    Each
    303 Stainless Steel
    5/8"-10
    		3Rounded Acme
    		1:110.1"±0.0006"/1"Brinell 16090,0006350K7180000000
    5/8"-10
    		6Rounded Acme
    		1:110.1"±0.0006"/1"Brinell 16090,0006350K129000000
     
    Flange Nuts—Right-Hand Thread
    Image of Product. Style B. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Ultra-Precision Lead Screws and Nuts, Flange Nuts—Right-Hand Thread, Style B.
    Image of Product. Style C. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Ultra-Precision Lead Screws and Nuts, Flange Nuts—Right-Hand Thread, Style C.

    Style B

    Style C

    Image of Attribute. Front orientation. Contains Annotated. Ultra-Precision Lead Screws and Nuts, Nuts, Flange Nut, Style B.
    Image of Attribute. Front orientation. Contains Annotated. Ultra-Precision Lead Screws and Nuts, Nuts, Flange Nut, Style C.

    Style B

    Style C

    Acetal—Acetal nuts have good wear and corrosion resistance.
    Wear-Compensating Spring—Flange nuts with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in positioning applications such as 3D printing and robotics.
    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.
    Flange
    Style
    Thread
    Size
    Lg.
    Dia.
    Dia.
    Thk.
    Thread Type
    Speed
    Ratio
    Bolt Circle
    Dia.
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Hardness
    Tensile Strength,
    psi
    Dynamic Thrust
    Load Cap., lb.
    No. of Mounting
    Holes
    Each
    Acetal
    B5/8"-10
    		1 1/2"0.875"1 1/2"3/16"Rounded Acme
    		1:11 3/16"10.1"Not Rated9,70022036350K167000000
     
    Acetal with Wear-Compensating Spring
    C5/8"-10
    		2"1.063"1 51/64"17/64"Rounded Acme
    		1:11 3/8"10.1"Not Rated9,7003536350K20500000
     

    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.
    Lead Screws—Right-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Lead Screws—Right-Hand Thread.
    Image of Attribute. Right-Hand Threads. Front orientation. Right-Hand Thread. Precision Acme Lead Screws and Nuts, Lead Screws.

    Right-Hand Threads

    1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.
    Black-Oxide 4140 Alloy Steel—Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance and a dark surface color.
    304 Stainless Steel—304 stainless steel lead screws have good 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.,
    ft.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Accuracy for Travel
    Distance per Turn
    Thread Fit
    Hardness
    Tensile Strength,
    psi
    Each
    1018 Low-Carbon Steel
    5/8"-10
    		3Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A328000000
    5/8"-10
    		6Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A72800000
     
    Black-Oxide 4140 Alloy Steel
    5/8"-10
    		3Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A63100000
    5/8"-10
    		6Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A024000000
     
    304 Stainless Steel
    5/8"-10
    		3Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 15072,00098980A138000000
    5/8"-10
    		6Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 15072,00098980A387000000
     
    Lead Screws—Left-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Lead Screws—Left-Hand Thread.
    Image of Attribute. Left-Hand Threads. Front orientation. Left-Hand Thread. Precision Acme Lead Screws and Nuts, Lead Screws.

    Left-Hand Threads

    1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.
    Black-Oxide 4140 Alloy Steel—Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance and a dark surface color.
    304 Stainless Steel—304 stainless steel lead screws have good 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.,
    ft.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Accuracy for Travel
    Distance per Turn
    Thread Fit
    Hardness
    Tensile Strength,
    psi
    Each
    1018 Low-Carbon Steel
    5/8"-10
    		3Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A628000000
    5/8"-10
    		6Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A52800000
     
    Black-Oxide 4140 Alloy Steel
    5/8"-10
    		3Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A73100000
    5/8"-10
    		6Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A324000000
     
    304 Stainless Steel
    5/8"-10
    		3Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 15072,00098980A238000000
    5/8"-10
    		6Acme
    		1:110.1"±0.009"/1 ft.Acme Class 2C
    		Brinell 15072,00098980A101000000
     
    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
    5/8"-10
    		1 1/4"1.859"Acme
    		1:110.1"Acme Class 2C
    		Brinell 217Not RatedNot Rated—95365A525000000
     
    932 Bearing Bronze
    5/8"-10
    		1 1/4"1.859"Acme
    		1:110.1"Acme Class 2C
    		Brinell 65Not Rated2,000—1343K13500000
     
    PET
    5/8"-10
    		1 1/4"1.859"Acme
    		1:110.1"Acme Class 2C
    		Not RatedNot Rated1,00015 to 1751349K14300000
     
    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
    5/8"-10
    		1 1/4"1.859"Acme
    		1:110.1"Acme Class 2C
    		Brinell 217Not RatedNot Rated—95365A625000000
     
    932 Bearing Bronze
    5/8"-10
    		1 1/4"1.859"Acme
    		1:110.1"Acme Class 2C
    		Brinell 65Not Rated2,000—1343K23500000
     
    PET
    5/8"-10
    		1 1/4"1.859"Acme
    		1:110.1"Acme Class 2C
    		Not RatedNot Rated1,00015 to 1751349K14400000
     
    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
    5/8"-10
    		1"1.125"Acme
    		1:110.1"15/16"-16
    		1/2"Acme Class 2C
    		Brinell 70Not RatedNot Rated—95072A149000000
     
    PET
    5/8"-10
    		1"1.125"Acme
    		1:110.1"15/16"-16
    		1/2"Acme Class 2C
    		Not RatedNot Rated1,00015 to 17595075A24900000
     
    Externally Threaded Nuts—Left-Hand Thread
    Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Left-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.
    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.
    Each
    673 Bronze
    5/8"-10
    		1"1.125"Acme
    		1:110.1"15/16"-16
    		1/2"Acme Class 2C
    		Brinell 70Not RatedNot Rated95072A249000000
     
    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
    15/16"-16
    		2 39/64"17/32"2 3/32"Brinell 1351329K102000000
     
    1215 Carbon Steel
    15/16"-16
    		2 5/8"17/32"2 3/32"Not Rated95082A64200000
     
    303 Stainless Steel
    15/16"-16
    		2 5/8"17/32"2 3/32"Brinell 1401329K1200000
     

    Clamping Acme Lead Screw Collars

    Image of Product. Front orientation. Lead Screw Collars. Clamping Acme Lead Screw Collars.
    Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.
    To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.
    Black-Oxide 1215 Carbon Steel—Black-oxide carbon steel collars have mild corrosion resistance.
    303 Stainless Steel—303 stainless steel collars have good corrosion resistance.
    Thread
    Size
    OD
    Wd.
    No. of Thread
    Starts
    Hardness
    Each
    Right-Hand Thread
     
    Black-Oxide 1215 Carbon Steel
    5/8"-10
    		1 5/16"7/16"1Brinell 1676698K53000000
     
    303 Stainless Steel
    5/8"-10
    		1 5/16"7/16"1Brinell 2282228N2400000
     

    Two-Piece Clamping Acme Lead Screw Collars

    Image of Product. Front orientation. Lead Screw Collars. Two-Piece Clamping Acme Lead Screw Collars.
    Mount these two-piece collars anywhere on an Acme lead screw without removing components. Use them to separate and position components or as an end stop to limit travel. Tighten the clamping screw to secure.
    To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.
    Black-Oxide 1215 Carbon Steel—Black-oxide carbon steel collars have mild corrosion resistance.
    Thread
    Size
    OD
    Wd.
    No. of Thread
    Starts
    Hardness
    Each
    Right-Hand Thread
     
    Black-Oxide 1215 Carbon Steel
    5/8"-10
    		1 5/16"7/16"1Brinell 1672207N13000000
     
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