Lead Screw Assemblies - Without Motors
Ways to Order
Lead Screw with a regular Rectangle Nut featuring a 10mm diameter, 1mm lead, and a length of 254mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$72.57
Lead Screw with a regular Rectangle Nut and a 16mm diameter, 5mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy of 0.003"/ft (76 µm/300 mm), the assembly exceeds industry standards, achieving unmatched straightness tolerances,..
$129.20
Lead Screw with a Round Anti-Backlash Nut and a 16mm diameter, 5mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$149.75
Lead Screw with a regular Rectangle Nut and a 16mm diameter, 1mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy of 0.003"/ft (76 µm/300 mm), the assembly exceeds industry standards, achieving unmatched straightness tolerances,..
$129.20
Lead Screw with a Round Anti-Backlash Nut and a 16mm diameter, 1mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$149.75
Lead Screw with a regular Triangle Nut and a 12mm diameter, 5mm lead and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw with a regular Rectangle Nut and a 12mm diameter, 5mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw with a Round Anti-Backlash Nut and a 12mm diameter, 1mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$132.41
Lead Screw with a Round Anti-Backlash Nut and a 12mm diameter, 5mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$132.41
Lead Screw with a regular Triangle Nut and a 12mm diameter, 1mm lead and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw with a regular Rectangle Nut and a 12mm diameter, 1mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw with a regular Rectangle Nut and a 10mm diameter, 5mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw with a regular Triangle Nut and a 10mm diameter, 5mm lead and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw Assembly - LSR1005T-0508-RCF-NNN-NNN-N - Length: 508mm, No Motor, Round Anti-Backlash Nut
$132.41
Lead Screw with a Round Anti-Backlash Nut and a 10mm diameter, 5mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$132.41
Lead Screw with a regular Triangle Nut featuring a 10mm diameter, 1mm lead and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw with a regular Rectangle Nut featuring a 10mm diameter, 1mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$121.23
Lead Screw Assembly - LSR1001T-0508-RCF-NNN-NNN-N - Length: 508mm, No Motor, Round Anti-Backlash Nut
$132.41
Lead Screw with a Round Anti-Backlash Nut featuring a 10mm diameter, 1mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$132.41
Lead Screw with a regular Triangle Nut featuring a 12mm diameter, 5mm lead and a length of 254mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$72.57
Lead Screw with a regular Rectangle Nut featuring a 12mm diameter, 5mm lead, and a length of 254mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. With exceptional lead accuracy, this assembly exceeds industry standards, achieving unmatched straightness tolerances, a smoother finish, and greater..
$72.57
Lead Screw with a Round Anti-Backlash Nut featuring a 12mm diameter, 5mm lead, and a length of 254mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$83.74
A lead screw is a precision threaded rod that converts rotational motion into controlled linear movement because, as the screw rotates, a correspondingly threaded nut is forced to travel along the threads and move a load along a single linear axis with only one degree of freedom. PBC Linear lead screw assemblies combine precision-rolled, PTFE-coated 300 Series stainless steel screws with self-lubricating PTFE-infused Frelon® composite polymer nuts to reduce friction, stop flaking, distribute thread load, and provide maintenance-free motion. Assemblies are available in a variety of screw diameters, thread profiles, and screw lead configurations to support different load capacities, speeds, and positioning requirements. Thread profiles describe the shape and geometry of the screw thread, including flank angle, thread depth, pitch, and crest and root form, while screw lead measures the linear distance the nut travels in one full revolution of the screw. Motorized assemblies are listed separately as screw actuators. Round, triangular, and rectangular nuts are offered in both traditional and anti-backlash designs. The Constant Force™ Anti-Backlash nut employs a spring to uniformly apply radial pressure throughout the motion profile, ensuring consistent performance and delivering 2–4 times less backlash over the product’s lifespan. Lead screws are precision rolled at PBC Linear and straightened in-house using an Italian Galdabini PAS 4 STEP automated straightening machine to maintain lead accuracy tolerances of approximately ±0.003 inches per foot (76 µm per 300 mm), exceeding the published specifications of many competing products and industry standards by approximately three times.
Glossary: What is Lead Screw Efficiency
Our Blog Posts About Lead Screws:
- How Are Lead Screws Made
- How to Check Lead Screw Accuracy and Straightness
- Lead Screw Precision in Medical Applications
- Lead Screw Straightener at PBC Linear
- Non-Captive Lead Screw Linear Actuators
- How to Prevent Lead Screw Load Drift
- Components of Lead Screws, Ball Screws and Linear Rails
- 3 Methods of Connecting Lead Screws to Motors
Frequently Asked Questions
What is thread handedness and how does it relate to screw rotation direction?
Thread handedness describes whether a screw has right-hand or left-hand threads. In a typical lead screw assembly, the screw rotates and drives a matching threaded, non-rotating nut axially. The direction of that axial movement depends on both thread handedness and rotation direction. A right-hand thread and a left-hand thread will move the nut in opposite directions when rotated the same way.
What is the difference between a lead screw and screw lead?
A lead screw is the threaded mechanical component used to create linear motion. Screw lead is a measurement: the distance the nut or screw travels axially in one full rotation. In simple terms, the lead screw is the part, while screw lead describes how far it moves per turn.
What is an anti-backlash nut?
An anti-backlash nut is a lead screw nut designed to reduce axial play between the screw and nut threads. By maintaining preload against the screw, it helps improve repeatability, positioning control, and motion stability in applications where looseness or reversal error must be minimized.
What does PTFE coating do on a lead screw?
PTFE coating helps reduce friction, wear, and flaking between the lead screw and nut. It can also support smoother travel, quieter operation, and improved corrosion resistance, especially when used with stainless steel lead screws.
Can lead screws be motorized?
Yes. Lead screws can be paired with motors, hand cranks, knobs, or customer-supplied drive systems. Motorized lead screw assemblies are commonly used with linear guide components as compact linear actuators in positioning systems, adjustment mechanisms, and automation equipment.
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