> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Traveling Nut for TR8×8(P2) Threaded Rods **Type:** Product page · **SKU:** POLOLU-2688 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/traveling-nut-for-tr8-8-p2-threaded-rods.html ([markdown](https://core-electronics.com.au/traveling-nut-for-tr8-8-p2-threaded-rods.html.md)) This copper alloy traveling nut is intended for use with Tr8×8(P2) threaded rods and features a mounting flange with four holes threaded for M3 screws.... ## Pricing - **Price:** $16.70 (inc GST) — $15.18 AUD, exc GST - **Quantity discounts:** 10+ $14.57 (exc GST) · 25+ $14.12 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 24 and Aug 25. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-2688:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/POLOLU-2688:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description | ![](https://core-electronics.com.au/attachments/localcontent/0J6213_19593f92a01.jpg) | |---| | Traveling Nut for TR8×8(P2) Threaded Rod. | | ![](https://core-electronics.com.au/attachments/localcontent/0J5103_327239b9c3e.gif) | |---| | When the nut is prevented from rotating, it travels up or down the rod as the motor rotates. | | ![](https://core-electronics.com.au/attachments/localcontent/0J5663_13750b5c585.jpg) | |---| | NEMA 17 stepper motor with lead screw mounted with a stamped aluminum L-bracket. | This copper alloy traveling nut (also known as a carriage nut) features a mounting flange with four holes threaded for [M3 screws](https://core-electronics.com.au/hardware/screws-nuts.html). It is intended for use with *Tr8×8(P2)* leadscrews, which are 8 mm-diameter rods with four independent trapezoidal threads spaced 2 mm apart. One full revolution of such a rod will result in a 8.0 mm linear displacement of the traveling nut. This is the same traveling nut that is included with Pololu's NEMA 17-size stepper motors with lead screw: - [Stepper Motor with 18cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase](https://core-electronics.com.au/stepper-motor-with-18cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) - [Stepper Motor with 28cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase](https://core-electronics.com.au/stepper-motor-with-28cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) - [Stepper Motor with 38cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase](https://core-electronics.com.au/stepper-motor-with-38cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) Please note that the nut is not spring loaded, so changes in direction will result in loss of positioning precision due to backlash. | \| [![](https://core-electronics.com.au/attachments/localcontent/0J6210_16053b251d4.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6210_43938dac389.jpg) \| \|---\| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J6209_689771d0b8.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6209_1819611798e.jpg) \| \|---\|---\| | |---| Dimensions for this nut are shown in the diagram below and are included in the datasheet for the stepper motor with 28cm lead screw, which is available as a downloadable PDF (63k pdf). Units are mm. | ![](https://core-electronics.com.au/attachments/localcontent/0J9472_24113f16eb7.jpg) | |---| **People often buy this product together with:** | [![Pololu Stamped Aluminum L-Bracket for NEMA 17 Stepper Motors](https://core-electronics.com.au/attachments/localcontent/0J5626_2887ef923a.jpg)](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) | [Pololu Stamped Aluminum L-Bracket for NEMA 17 Stepper Motors](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) | |---|---| | [![Stepper Motor with 28cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase](https://core-electronics.com.au/attachments/localcontent/0J5064_3019eb3dcf.jpg)](https://core-electronics.com.au/stepper-motor-with-28cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) | [Stepper Motor with 28cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase](https://core-electronics.com.au/stepper-motor-with-28cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) | |---|---| | [![Stepper Motor with 18cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase](https://core-electronics.com.au/attachments/localcontent/0J6205_30260605d3.jpg)](https://core-electronics.com.au/stepper-motor-with-18cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) | [Stepper Motor with 18cm Lead Screw: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase](https://core-electronics.com.au/stepper-motor-with-18cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) | |---|---| **Dimensions** | Weight: | 12 g | |---|---| ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_7720.jpg)