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    44 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.
    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.
    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
    Each
    1018 Low-Carbon Steel
    7/8"-6
    3Acme
    1:110.167"±0.009"/1 ft.Acme Class 2C
    Not RatedNot Rated99030A966000000
    7/8"-6
    6Acme
    1:110.167"±0.009"/1 ft.Acme Class 2C
    Not RatedNot Rated99030A967000000
     
    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.
    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.
    Each
    Iron
    7/8"-6
    2"2.985"Acme
    1:110.167"Acme Class 2C
    Not RatedNot RatedNot Rated95365A631000000
     
    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.
    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
    7/8"-6
    1 1/2"1.5"Acme
    1:110.167"1 3/8"-16
    1/2"Acme Class 2C
    Not RatedNot RatedNot Rated95072A883000000
     
    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.
    Flange Thread
    Size
    Flange
    Dia.
    Flange
    Thk.
    Bolt Circle
    Dia.
    Flange
    Hardness
    Each
    Black-Oxide 1117 Carbon Steel
    1 3/8"-16
    2 49/64"33/64"2 17/64"Brinell 1351329K104000000
     

    Acme Lead Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Lead Screws and Nuts. Acme Lead Screws and Nuts.
    Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. 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. Lead Screws and Nuts. Acme Lead Screws and Nuts, Lead Screws—Right-Hand Thread.
    Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
    Alloy Steel—Alloy steel components are harder and stronger than carbon steel components.
    18-8 Stainless Steel—18-8 stainless steel components have good corrosion resistance.
    316 Stainless Steel—316 stainless steel components have excellent corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Lg.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Fastener Strength
    Grade/Class
    Hardness
    Tensile Strength,
    psi
    Specs.
    Met
    Each
    Carbon Steel
    7/8"-6
    Acme
    12"11:10.167"Acme Class 2G
    SAE Grade 2
    Rockwell B6164,000ASTM A10898935A739000000
    7/8"-6
    Acme
    3 ft.11:10.167"Acme Class 2G
    SAE Grade 2
    Rockwell B6164,000ASTM A10898935A84600000
    7/8"-6
    Acme
    6 ft.11:10.167"Acme Class 2G
    SAE Grade 2
    Rockwell B6153,000ASTM A10898935A03700000
    7/8"-6
    Acme
    12 ft.11:10.167"Acme Class 2G
    SAE Grade 2
    Rockwell B6164,000ASTM A10898935A66200000
     
    Alloy Steel
    7/8"-6
    Acme
    12"11:10.167"Acme Class 2G
    ASTM Grade B7
    Rockwell C35125,000ASTM A193
    93410A94800000
    7/8"-6
    Acme
    3 ft.11:10.167"Acme Class 2G
    ASTM Grade B7
    Rockwell C35125,000ASTM A193
    93410A63000000
    7/8"-6
    Acme
    6 ft.11:10.167"Acme Class 2G
    ASTM Grade B7
    Rockwell C35125,000ASTM A193
    93410A160000000
     
    18-8 Stainless Steel
    7/8"-6
    Acme
    12"11:10.167"Acme Class 2G
    Rockwell B96Not Rated95061A63300000
    7/8"-6
    Acme
    3 ft.11:10.167"Acme Class 2G
    Rockwell B96Not Rated95061A837000000
    7/8"-6
    Acme
    6 ft.11:10.167"Acme Class 2G
    Rockwell B96Not Rated95061A193000000
    7/8"-6
    Acme
    12 ft.11:10.167"Acme Class 2G
    Rockwell B96Not Rated95061A947000000
     
    316 Stainless Steel
    7/8"-6
    Acme
    12"11:10.167"Acme Class 2G
    ASTM Grade B8M
    Rockwell B9775,000ASTM A193
    97014A63700000
    7/8"-6
    Acme
    3 ft.11:10.167"Acme Class 2G
    ASTM Grade B8M
    Rockwell B9775,000ASTM A193
    97014A638000000
    7/8"-6
    Acme
    6 ft.11:10.167"Acme Class 2G
    ASTM Grade B8M
    Rockwell B9775,000ASTM A193
    97014A639000000
     
    Lead Screws—Left-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Lead Screws—Left-Hand Thread.
    Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
    Alloy Steel—Alloy steel components are harder and stronger than carbon steel components.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Lg.,
    ft.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Fastener Strength
    Grade/Class
    Hardness
    Tensile Strength,
    psi
    Specs.
    Met
    Each
    Carbon Steel
    7/8"-6
    Acme
    311:10.167"Acme Class 2G
    SAE Grade 2
    Rockwell B6153,000ASTM A10898935A459000000
    7/8"-6
    Acme
    611:10.167"Acme Class 2G
    SAE Grade 2
    Rockwell B6153,000ASTM A10898935A46000000
     
    Alloy Steel
    7/8"-6
    Acme
    311:10.167"Acme Class 2G
    ASTM Grade B7
    Rockwell C35125,000ASTM A193
    93410A464000000
    7/8"-6
    Acme
    611:10.167"Acme Class 2G
    ASTM Grade B7
    Rockwell C35125,000ASTM A193
    93410A465000000
     
    Hex-Head Screws—Right-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Hex-Head Screws—Right-Hand Thread.
    Hex head screws fasten heavy loads. They’re generally shorter than lead screws and can be tightened with a wrench. Length is measured from under the head.
    Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Head
    Thread
    Size
    Thread
    Type
    Lg.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Lg.
    Wd.
    Ht.
    Thread Fit
    Fastener Strength
    Grade/Class
    Hardness
    Tensile Strength,
    psi
    Each
    Carbon Steel
    7/8"-6
    Acme
    3"11:10.167"2 1/2" to 3"1 5/16"35/64"Acme Class 2G
    SAE Grade 5
    Rockwell C19105,00093097A270000000
    7/8"-6
    Acme
    4"11:10.167"3 1/2" to 4"1 5/16"35/64"Acme Class 2G
    SAE Grade 5
    Rockwell C19105,00093097A28000000
    7/8"-6
    Acme
    6"11:10.167"5 1/2" to 6"1 5/16"35/64"Acme Class 2G
    SAE Grade 5
    Rockwell C19105,00093097A29000000
     
    Coupling Nuts—Right-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Coupling Nuts—Right-Hand Thread.
    Coupling nuts connect two lead screws.
    Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
    18-8 Stainless Steel—18-8 stainless steel components have good corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Wd.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Each
    Carbon Steel
    7/8"-6
    Acme
    2 1/2"1 1/4"11:10.167"Acme Class 2G
    Rockwell B75Not Rated93023A665000000
     
    18-8 Stainless Steel
    7/8"-6
    Acme
    2 1/2"1 1/4"11:10.167"Acme Class 2G
    Not RatedNot Rated93030A11500000
     
    Coupling Nuts—Left-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Coupling Nuts—Left-Hand Thread.
    Coupling nuts connect two lead screws.
    Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Wd.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Each
    Carbon Steel
    7/8"-6
    Acme
    2 1/2"1 1/4"11:10.167"Acme Class 2G
    Rockwell B75Not Rated93026A304000000
     
    Flange Nuts—Right-Hand Thread
    Image of Product. Top orientation. Contains Annotated. Lead Screws and Nuts. Acme Lead Screws and Nuts, Flange Nuts—Right-Hand Thread.
    Flange nuts move objects along the length of a lead screw. Flange nuts have a wide machinable flange for custom mounting.
    932 Bearing Bronze—932 bearing bronze components are more wear resistant than brass components. 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 or handle moves with one revolution of the lead screw.
    Flange
    Thread
    Size
    Thread
    Type
    Ht.
    Dia.
    Dia.
    Thk.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Each
    932 Bearing Bronze
    7/8"-6
    Acme
    1 3/4"1 1/4"2 1/4"1/2"11:10.167"Acme Class 2G
    Not RatedNot Rated95120A1430000000
     
    Flange Nuts—Left-Hand Thread
    Image of Product. Top orientation. Contains Annotated. Lead Screws and Nuts. Acme Lead Screws and Nuts, Flange Nuts—Left-Hand Thread.
    Flange nuts move objects along the length of a lead screw. Flange nuts have a wide machinable flange for custom mounting.
    932 Bearing Bronze—932 bearing bronze components are more wear resistant than brass components. 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 or handle moves with one revolution of the lead screw.
    Flange
    Thread
    Size
    Thread
    Type
    Ht.
    Dia.
    Dia.
    Thk.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Each
    932 Bearing Bronze
    7/8"-6
    Acme
    1 3/4"1 1/4"2 1/4"1/2"11:10.167"Acme Class 2G
    Not RatedNot Rated95120A5430000000
     
    Round Nuts—Right-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Round Nuts—Right-Hand Thread.
    Round nuts move objects along the length of a lead screw.
    360 Brass—360 brass components have excellent machinability and good corrosion resistance.
    932 Bearing Bronze—932 bearing bronze components are more wear resistant than brass components. 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 or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Dia.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Specs.
    Met
    Each
    360 Brass
    7/8"-6
    Acme
    7/8"1 1/2"11:10.167"Acme Class 2G
    Rockwell B55Not RatedASTM B1695100A117000000
     
    932 Bearing Bronze
    7/8"-6
    Acme
    1 17/32"1 21/32"11:10.167"Acme Class 2G
    Not RatedNot RatedASTM B50595090A50300000
     
    Round Nuts—Left-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Round Nuts—Left-Hand Thread.
    Round nuts move objects along the length of a lead screw.
    360 Brass—360 brass components have excellent machinability and good corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Dia.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Specs.
    Met
    Each
    360 Brass
    7/8"-6
    Acme
    7/8"1 1/2"11:10.167"Acme Class 2G
    Rockwell B55Not RatedASTM B1695100A417000000
     
    Hex Nuts—Right-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Hex Nuts—Right-Hand Thread.
    Hex nuts fasten and position lead screw components.
    Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
    Zinc-Plated Carbon Steel—Zinc-plated carbon steel components have mild corrosion resistance and are easier to machine than alloy steel components.
    360 Brass—360 brass components have excellent machinability and good corrosion resistance.
    18-8 Stainless Steel—18-8 stainless steel components have good corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Wd.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Specs.
    Met
    Each
    Carbon Steel
    7/8"-6
    Acme
    55/64"1 7/16"11:10.167"Acme Class 2G
    Rockwell B75Not Rated94815A12300000
     
    Zinc-Plated Carbon Steel
    7/8"-6
    Acme
    55/64"1 7/16"11:10.167"Acme Class 2G
    Rockwell B75Not Rated98948A11900000
     
    360 Brass
    7/8"-6
    Acme
    7/8"1 1/2"11:10.167"Acme Class 2G
    Rockwell B75Not RatedASTM B1695155A14300000
     
    18-8 Stainless Steel
    7/8"-6
    Acme
    55/64"1 1/2"11:10.167"Acme Class 2G
    Not RatedNot Rated95066A22600000
     
    Hex Nuts—Left-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Hex Nuts—Left-Hand Thread.
    Hex nuts fasten and position lead screw components.
    Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
    360 Brass—360 brass components have excellent machinability and good corrosion resistance.
    18-8 Stainless Steel—18-8 stainless steel components have good corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Wd.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Fastener Strength
    Grade/Class
    Hardness
    Tensile Strength,
    psi
    Specs.
    Met
    Each
    Carbon Steel
    7/8"-6
    Acme
    55/64"1 7/16"11:10.167"Acme Class 2G
    SAE Grade 2
    Rockwell B8564,00091808A120000000
     
    360 Brass
    7/8"-6
    Acme
    7/8"1 1/2"11:10.167"Acme Class 2G
    Rockwell B75Not RatedASTM B1695155A34300000
     
    18-8 Stainless Steel
    7/8"-6
    Acme
    55/64"1 1/2"11:10.167"Acme Class 2G
    Not RatedNot Rated95066A42600000
     
    Square Nuts—Right-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Square Nuts—Right-Hand Thread.
    Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
    360 Brass—360 brass components have excellent machinability and good corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Wd.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Specs.
    Met
    Each
    360 Brass
    7/8"-6
    Acme
    7/8"1 1/2"11:10.167"Acme Class 2G
    Rockwell B55Not RatedASTM B1695270A143000000
     
    Square Nuts—Left-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Square Nuts—Left-Hand Thread.
    Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
    360 Brass—360 brass components have excellent machinability and good corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Wd.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Specs.
    Met
    Each
    360 Brass
    7/8"-6
    Acme
    7/8"1 1/2"11:10.167"Acme Class 2G
    Rockwell B55Not RatedASTM B1695270A543000000
     
    Flat Handles—Right-Hand Thread
    Image of Product. Front orientation. Lead Screws and Nuts. Acme Lead Screws and Nuts, Flat Handles—Right-Hand Thread.
    Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.
    Cast Iron—Cast iron components have good machinability and high strength.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
    Thread
    Size
    Thread
    Type
    Ht.
    Wd.
    No. of Thread
    Starts
    Speed
    Ratio
    Travel Distance
    per Turn
    Thread Fit
    Hardness
    Tensile
    Strength
    Each
    Cast Iron
    7/8"-6
    Acme
    1 1/8"9 1/2"11:10.167"Acme Class 2G
    Rockwell B72Not Rated92428A744000000
     
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