Hitec Spline Metal Servo Horn (Tapped) HMSH-02
Description
- Fits on all Hitec standard resin, carbonite, and metal final gears
- Suitable for HS-322, 422, 645MG, 1425CR etc.
- Has the standard Servo Erector Set hole pattern
- Tapped to accept 2-56 screws
The Lynxmotion Hitec Metal Servo Horn is made to be used with Hitec standard servo spines which can be found on the Hitec HS-322, 422, 485HB, 645MG, 5645, 1425CR and others.

One-third (6/18) the servo horns that I ordered would not fit my Hitec HS-645MG servos despite being advertised as doing so. Quality control is lacking.
Didn't fit on my servo at all. Might be my fault, I dunno if a JX PDI-6221MG is non-standard in some way, but it's unusable.
Exactly what I wanted, good quality, strong item.
V. disappointed! It does not fit ANY of my Hitec servos: HS-485HB, HS-7954SH, HS-7980TH. ... and it is not a one off... I ordered 4, and neither fits... Total waiste of time.... V. disappointed.
For anyone wondering if this horn fits or not: I ordered this horn despite other reviews saying it doesn't fit Hitec servos. After it arrived, I held my breath and gave it a go, well, it didn't fit. So I contacted Robotshop and they sent another one the next morning (now that's great customer service). The second horn shipped to me fit my servo perfectly. And on closer examination, I noticed that it was somewhat different from the first one I received (different aluminum grade). In summary, I think the ones that do not fit might be from a bad batch or from another manufacturer (not lynxmotion). All in all, I'd recommend getting these especially since Robotshop has exceptional customer service plus you can't find these cheaper anywhere else in Canada (that I know of).
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WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov.
Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
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- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
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- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
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Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".