# Lead screw nut

A T8 brass lead screw nut: flanged, or anti-backlash (flanged nut, spring and second nut). Axis along Z, the flange's face on the XY plane, the body below it.

## Source

Handson Technology data sheet MCH-1179, *Anti-Backlash T-Nut for Lead Screw*, Mechanical Dimension, page 2, <https://handsontec.com/dataspecs/Anti-backlash-T-nut.pdf>:

- Flanged nut: flange 22 across and 4 thick, body 10.3, 15 long, holes on a 16 circle.
- Second nut: collar 14 across and 4 thick on the same 10.3 body, 15 long.
- Anti-backlash nut: 50 overall, with a 40 spring.

This is a seller's drawing of a common unbranded nut, so check yours. The sheet shows Tr8x8; the same body is sold for leads 2, 4 and 8, so `lead` names the nut without changing its outline.

**Not modelled:** the internal thread (the bore is the screw's 8 mm) and the second nut's tabs. **Proportions, for looks only:** the mounting hole size (an M3 clearance, because the drawing's hole figure is unclear), and the spring's wire and coils.

T8 round and polymer nuts, and T10, Tr12 and Tr16 nuts, aren't here yet; see `COVERAGE.md`.