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    42 Products

    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.
    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
    2"-4
    		Acme
    		12"11:10.25"Acme Class 2G
    		SAE Grade 2
    		Rockwell B6164,000ASTM A10898935A779000000
    2"-4
    		Acme
    		3 ft.11:10.25"Acme Class 2G
    		SAE Grade 2
    		Rockwell B6164,000ASTM A10898935A893000000
    2"-4
    		Acme
    		6 ft.11:10.25"Acme Class 2G
    		SAE Grade 2
    		Rockwell B6164,000ASTM A10898935A114000000
     
    Alloy Steel
    2"-4
    		Acme
    		12"11:10.25"Acme Class 2G
    		ASTM Grade B7
    		Rockwell C35125,000ASTM A193
    		93410A993000000
    2"-4
    		Acme
    		3 ft.11:10.25"Acme Class 2G
    		ASTM Grade B7
    		Rockwell C35125,000ASTM A193
    		93410A671000000
    2"-4
    		Acme
    		6 ft.11:10.25"Acme Class 2G
    		ASTM Grade B7
    		Rockwell C35125,000ASTM A193
    		93410A260000000
     
    18-8 Stainless Steel
    2"-4
    		Acme
    		3 ft.11:10.25"Acme Class 2G
    		—Rockwell B96Not Rated—95061A883000000
    2"-4
    		Acme
    		6 ft.11:10.25"Acme Class 2G
    		—Rockwell B96Not Rated—95061A205000000
     
    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
    2"-4
    		Acme
    		311:10.25"Acme Class 2G
    		SAE Grade 2
    		Rockwell B6153,000ASTM A10898935A5590000000
    2"-4
    		Acme
    		611:10.25"Acme Class 2G
    		SAE Grade 2
    		Rockwell B6153,000ASTM A10898935A560000000
     
    Alloy Steel
    2"-4
    		Acme
    		311:10.25"Acme Class 2G
    		ASTM Grade B7
    		Rockwell C35125,000ASTM A193
    		93410A564000000
    2"-4
    		Acme
    		611:10.25"Acme Class 2G
    		ASTM Grade B7
    		Rockwell C35125,000ASTM A193
    		93410A565000000
     
    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
    2"-4
    		Acme
    		4"3"11:10.25"Acme Class 2G
    		Rockwell B75Not Rated93023A6750000000
     
    18-8 Stainless Steel
    2"-4
    		Acme
    		4"3"11:10.25"Acme Class 2G
    		Not RatedNot Rated93030A129000000
     
    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
    2"-4
    		Acme
    		4"3"11:10.25"Acme Class 2G
    		Rockwell B75Not Rated93026A3180000000
     
    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
    2"-4
    		Acme
    		4"3"4"1"11:10.25"Acme Class 2G
    		Not RatedNot Rated95120A1910000000
     
    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
    2"-4
    		Acme
    		4"3"4"1"11:10.25"Acme Class 2G
    		Not RatedNot Rated95120A5910000000
     
    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.
    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
    932 Bearing Bronze
    2"-4
    		Acme
    		4 1/64"3 9/32"11:10.25"Acme Class 2G
    		Not RatedNot RatedASTM B50595090A1360000000
     
    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
    2"-4
    		Acme
    		1 31/32"3"11:10.25"Acme Class 2G
    		Rockwell B75Not Rated—94815A114000000
     
    Zinc-Plated Carbon Steel
    2"-4
    		Acme
    		1 31/32"3"11:10.25"Acme Class 2G
    		Rockwell B75Not Rated—98948A131000000
     
    360 Brass
    2"-4
    		Acme
    		2"3"11:10.25"Acme Class 2G
    		Rockwell B75Not RatedASTM B1695155A171000000
     
    18-8 Stainless Steel
    2"-4
    		Acme
    		1 31/32"3"11:10.25"Acme Class 2G
    		Not RatedNot Rated—95066A233000000
     
    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.
    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
    2"-4
    		Acme
    		2"3"11:10.25"Acme Class 2G
    		SAE Grade 2
    		Rockwell B8564,000—91808A114000000
     
    360 Brass
    2"-4
    		Acme
    		2"3"11:10.25"Acme Class 2G
    		—Rockwell B75Not RatedASTM B1695155A371000000
     
    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
    2"-4
    		Acme
    		2"3"11:10.25"Acme Class 2G
    		Rockwell B55Not RatedASTM B1695270A1710000000
     

    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.
    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
    2"-4
    		3 ft.Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A0570000000
    2"-4
    		6 ft.Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A157000000
     
    Black-Oxide 4140 Alloy Steel
    2"-4
    		18"Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A405000000
    2"-4
    		3 ft.Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A657000000
    2"-4
    		6 ft.Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A132000000
     
    304 Stainless Steel
    2"-4
    		3 ft.Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 15072,00098980A408000000
    2"-4
    		6 ft.Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 15072,00098980A445000000
     
    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.
    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
    2"-4
    		3Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A4570000000
    2"-4
    		6Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 12664,00099030A557000000
     
    Black-Oxide 4140 Alloy Steel
    2"-4
    		3Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A757000000
    2"-4
    		6Acme
    		1:110.25"±0.009"/1 ft.Acme Class 2C
    		Brinell 271125,00098940A432000000
     
    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
    2"-4
    		2 3/4"2.75"Acme
    		1:110.25"2 35/64"-187/8"Acme Class 2C
    		Brinell 70Not RatedNot Rated—95072A1220000000
     
    PET
    2"-4
    		3 15/32"2.75"Acme
    		1:110.25"2 35/64"-187/8"Acme Class 2C
    		Not RatedNot Rated10,00015 to 17595075A222000000
     
    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
    2"-4
    		2 3/4"2.75"Acme
    		1:110.25"2 35/64"-187/8"Acme Class 2C
    		Brinell 70Not RatedNot Rated95072A2260000000
     
    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.
    1117 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
    1117 Carbon Steel
    2 35/64"-184 15/16"29/32"4 1/16"Brinell 15695082A646000000
     
    303 Stainless Steel
    2 35/64"-184 15/16"29/32"4 1/16"Brinell 1401329K16000000
     

    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 12L14 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 12L14 Carbon Steel
    2"-4
    		3 1/2"1"1Brinell 1636698K24000000
     
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