RETAINER NUT 2 1/8 DIAM X 5/8-11 THREAD (MOST POPULAR)

$2.7 ~~$3.75~~ In stock

The Supergrit Abrasives Retainer Nut is a 2 1/8 inch diameter nut with a 5/8-11 thread, offered as a single unit or in a pack of two. It is listed among our most popular items.

Diameter: 2 1/8 inch
Thread: 5/8-11
Brand: Supergrit-Dev
Quantity options: Single or Pack of 2
Popular retainer nut configuration

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy

If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy

Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy

Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.6 / 5 · 5 reviews)

Charlotte R. ★★★★★ Oct 22, 2026

The 2 1/8 inch diameter fit perfectly on my bench grinder's arbor, and the 5/8-11 threads threaded on smooth. I grabbed a single to test, but I'll order a pack of two for the other grinder.

Ellie K. ★★★★★ Oct 21, 2026

Took a chance on these as a replacement for a worn-down nut on my bench grinder, and the 5/8-11 thread fit perfectly without any wobble. The 2 1/8 inch diameter gives a solid grip, even with gloves on. Solid buy.

Joseph T. ★★★★★ Oct 19, 2026

The 5/8-11 thread seated perfectly on my spindle, no wobble or stripped threads after a full day of use. The 2 1/8 inch diameter gives plenty of grip for tightening by hand, and the single-unit pack was exactly what I needed.