T8x4 trapezoidal lead screw, 8 mm diameter, 4 mm lead, 2-start, 200 mm long
standard/generic reference, not a manufacturer-certified replacement · lead-screw
Use it
(import "parts/leadscrew/T8x4.ik" as p)In a design on ink: ask your agent for it by name, or by what it must be.
Dimensions
| diameter | 8 |
| pitch | 2 |
| starts | 2 |
| lead | 4 |
| external-minor | 5.5 |
| internal-minor | 6 |
Frame of reference
axis +z, lower cut face z=0, length is total tip-to-tip
Frames
Where it connects: each frame sits on the face it connects by, z out of the part, in the part's own coordinates.
| Of | Frame | Origin | x | z |
|---|---|---|---|---|
| screw | end-a | (0, 0, 0) | (1, 0, 0) | (0, 0, -1) |
| screw | end-b | (0, 0, 200) | (1, 0, 0) | (0, 0, 1) |
All 18 numbers in its record
| diameter | 8 |
| pitch | 2 |
| starts | 2 |
| lead | 4 |
| external-minor | 5.5 |
| internal-minor | 6 |
| internal-major | 8.5 |
| flank-angle-deg | 30 |
| radial-fit | 0.04 |
| fixed-free | 0.36, 0.25 |
| supported-supported | 1, 1 |
| fixed-supported | 1.47, 2.05 |
| fixed-fixed | 2.23, 4 |
| permissible-factor | 0.8, 0.8 |
| root-diameter-for-screening | 5.5 |
| default | 200, 2 |
| minimum-exclusive | 0 |
| stock-lengths | 200, 300, 400, 500, 1000 |