Fasteners› Wheel and Tire Fastener Kits

Gorillas Automotive Products

Small Diameter Spline Lug Nut M12-1.25

$34.99

SKU: GORILLA-21128ET

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The Gorilla Automotive 21128ET is a small diameter spline E-T lug nut designed for wheel and tire applications. It features a M12-1.25 thread pitch and a conical seat type, with a closed-end design.

Constructed from steel, this lug nut has a chrome-plated finish and is heat-treated for improved durability. Its dimensions include an overall length of 1.6 inches, a shank length of 0.25 inches, and a shank width of 0.62 inches. The outside diameter is 20mm, and it requires a 19mm (3/4") or 21mm (13/16") tool for installation.
Show original supplier description
The Gorilla Automotive 21128ET is a small diameter spline E-T lug nut engineered to provide a secure and durable fastening solution for your wheels. With a M12-1.25 thread pitch and a conical seat type, this lug nut is designed for a precise fit. Its closed-end design offers protection for exposed studs. Key specifications include an overall length of 1.6 inches, a shank length of 0.25 inches, and a shank width of 0.62 inches, with an outside diameter of 20mm. It is designed to be used with a small diameter hex, requiring a 19mm (3/4") or 21mm (13/16") tool for installation. This product is sold in bulk packaging.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandGorillas Automotive Products
Part NumberGORILLA-21128ET
CategoryFasteners

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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