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About Carriages and Guide Rails
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Stabilize your carriages against pitch, roll, and yaw forces by installing them in pairs.
Metric Ultra-Precision Lead Screws and Nuts
 |  |  |  |  |
Style A | Style B | Style C | Style D |
Externally Threaded Nuts—Right-Hand Thread
| |
Style A | Style B |
Acetal—Acetal nuts have good wear and 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 | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Thread Size | Lg. | Wd. | Ht. | Dia. | Hex Wd. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Size | Lg. | Hardness | Tensile Strength | Dynamic Thrust Load Cap., lb. | Temp., ° F | Each | |||
Acetal | ||||||||||||||||||||
| A | M2 × 0.5 mm | 11/16" | — | — | 0.297" | 7/16" | Metric Rounded Trapezoidal | 1:1 | 1 | 0.5 | 3/8"-24 | 3/16" | Not Rated | 8,000 psi | 10 | -40 to 185 | 7549K58 | 000000 | ||
| A | M4 × 0.3 mm | 11/16" | — | — | 0.297" | 7/16" | Metric Rounded Trapezoidal | 1:1 | 1 | 0.3 | 3/8"-24 | 3/16" | Not Rated | 8,000 psi | 25 | -40 to 185 | 7549K59 | 00000 | ||
| A | M8 × 1.5 mm | 1" | — | — | 0.548" | 11/16" | Metric Rounded Trapezoidal | 1:1 | 1 | 1.5 | 5/8"-18 | 1/4" | Not Rated | 8,000 psi | 75 | -40 to 185 | 7549K61 | 00000 | ||
PEEK | ||||||||||||||||||||
| B | M2 × 0.4 mm | 5/16" | 0.22" | 0.197" | — | — | Metric Rounded Trapezoidal | 1:1 | 1 | 0.375 | M5 × 0.8 mm | 9/64" | Durometer 83D | Not Rated | 2 | — | 90500A220 | 00000 | ||
| B | M3 × 0.5 mm | 13/32" | 0.311" | 0.276" | — | — | Metric Rounded Trapezoidal | 1:1 | 1 | 0.5 | M7 × 0.75 mm | 5/32" | Durometer 83D | Not Rated | 5 | — | 90500A230 | 00000 | ||
| B | M4 × 1 mm | 1/2" | 0.402" | 0.354" | — | — | Metric Rounded Trapezoidal | 1:1 | 1 | 1 | M9 × 1 mm | 13/64" | Durometer 83D | Not Rated | 10 | — | 90500A240 | 00000 | ||
Flange Nuts—Right-Hand Thread
| |
Style C | Style D |
 |
Style C |
 |
Style D |
Acetal—Acetal nuts have good wear and corrosion resistance.
Wear-Compensating Internal O-Ring—Flange nuts with wear-compensating internal O-ring 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. | Wd. | Ht. | Thk. | Thread Type | Speed Ratio | Bolt Circle Dia. | No. of Thread Starts | Travel Distance per Turn, mm | Hardness | Tensile Strength | Dynamic Thrust Load Cap., lb. | No. of Mounting Holes | Temp., ° F | Each | |||
Acetal | |||||||||||||||||||||
| C | M2 × 0.5 mm | 1/2" | 0.297" | — | 3/4" | 13/32" | 1/8" | Metric Rounded Trapezoidal | 1:1 | 39/64" | 1 | 0.5 | Not Rated | 8,000 psi | 10 | 2 | -40 to 185 | 7549K62 | 000000 | ||
| C | M4 × 0.3 mm | 1/2" | 0.297" | — | 3/4" | 13/32" | 1/8" | Metric Rounded Trapezoidal | 1:1 | 39/64" | 1 | 0.3 | Not Rated | 8,000 psi | 25 | 2 | -40 to 185 | 7549K63 | 00000 | ||
| D | M8 × 1.5 mm | 3/4" | 0.548" | 1 1/8" | — | — | 3/16" | Metric Rounded Trapezoidal | 1:1 | 7/8" | 1 | 1.5 | Not Rated | 8,000 psi | 75 | 3 | -40 to 185 | 7549K64 | 00000 | ||
PEEK | |||||||||||||||||||||
| C | M2 × 0.4 mm | 9/32" | 0.209" | — | 15/32" | 15/64" | 5/64" | Metric Rounded Trapezoidal | 1:1 | 11/32" | 1 | 0.375 | Durometer 83D | Not Rated | 2 | 2 | — | 90500A250 | 00000 | ||
| C | M3 × 0.5 mm | 21/64" | 0.295" | — | 39/64" | 5/16" | 3/32" | Metric Rounded Trapezoidal | 1:1 | 15/32" | 1 | 0.5 | Durometer 83D | Not Rated | 5 | 2 | — | 90500A260 | 00000 | ||
| C | M4 × 1 mm | 13/32" | 0.354" | — | 3/4" | 13/32" | 1/8" | Metric Rounded Trapezoidal | 1:1 | 19/32" | 1 | 1 | Durometer 83D | Not Rated | 10 | 2 | — | 90500A270 | 00000 | ||
PEEK with Wear-Compensating Internal O-Ring | |||||||||||||||||||||
| C | M2 × 0.4 mm | 5/16" | 0.228" | — | 15/32" | 15/64" | 5/64" | Metric Rounded Trapezoidal | 1:1 | 11/32" | 1 | 0.375 | Durometer 83D | Not Rated | 1 | 2 | — | 90500A280 | 000000 | ||
| C | M3 × 0.5 mm | 25/64" | 0.315" | — | 39/64" | 5/16" | 3/32" | Metric Rounded Trapezoidal | 1:1 | 15/32" | 1 | 0.5 | Durometer 83D | Not Rated | 2 | 2 | — | 90500A290 | 000000 | ||
| C | M4 × 1 mm | 31/64" | 0.406" | — | 3/4" | 13/32" | 1/8" | Metric Rounded Trapezoidal | 1:1 | 19/32" | 1 | 1 | Durometer 83D | Not Rated | 5 | 2 | — | 90500A310 | 000000 | ||
Ultra-Precision Lead Screws and Nuts
 |  |
Style A |
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.
Flange Nuts—Right-Hand Thread
|
Style A |
Acetal—Acetal nuts have good wear and 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.
Flange | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Thread Size | Lg. | Dia. | Wd. | Ht. | Thk. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn | Mounting Hole Ctr.-to-Ctr. | Hardness | Tensile Strength | Dynamic Thrust Load Cap., lb. | No. of Mounting Holes | Each | |||
Acetal | |||||||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.048" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K22 | 000000 | ||
| A | 9/64"-41.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.024" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K21 | 00000 | ||
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.048" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K24 | 00000 | ||
Acetal with Wear-Compensating Internal O-Ring | |||||||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.048" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K32 | 00000 | ||
| A | 9/64"-41.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.024" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K31 | 00000 | ||
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.048" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K34 | 00000 | ||
Fast-Travel Ultra-Precision Lead Screws and Nuts
 |  |
Style A |
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. 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.
Flange Nuts—Right-Hand Thread
|
Style A |
Acetal—Acetal nuts have good wear and corrosion resistance.
Wear-Compensating Internal O-Ring—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. | Wd. | Ht. | Thk. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn | Mounting Hole Ctr.-to-Ctr. | Hardness | Tensile Strength | Dynamic Thrust Load Cap., lb. | No. of Mounting Holes | Each | |||
Acetal | |||||||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 2:1 | 2 | 0.096" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K23 | 000000 | ||
| A | 5/32"-21.3 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 2:1 | 2 | 0.094" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K25 | 00000 | ||
| A | 3/16"-42.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 16:1 | 16 | 0.375" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K57 | 00000 | ||
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 4:1 | 4 | 0.192" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K26 | 00000 | ||
Acetal with Wear-Compensating Internal O-Ring | |||||||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 2:1 | 2 | 0.096" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K33 | 00000 | ||
| A | 5/32"-21.3 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 2:1 | 2 | 0.094" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K35 | 00000 | ||
| A | 3/16"-42.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 16:1 | 16 | 0.375" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K67 | 00000 | ||
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 4:1 | 4 | 0.192" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K36 | 00000 | ||
