Products for bench top machinists | LittleMachineShop.com

Collets, ER-40 Individual Sizes

Collets, ER-40 Individual Sizes - Main image
Collets, ER-40 Individual Sizes - View 2Collets, ER-40 Individual Sizes - View 3Collets, ER-40 Individual Sizes - View 4Collets, ER-40 Individual Sizes - View 5Collets, ER-40 Individual Sizes - View 6
$9.27 $14.95 In stock

ER-40 collets are 1.62" (41.15 mm) maximum diameter and 1.81" (46 mm) long. They have a clamping range of 1/8" to 1" (3.0 mm to 26.0 mm).

ER collets are made from high grade tool steel, hardened and ground to close tolerance. Kerf cuts allow the collet to expand and contract as needed within the specific clamping range to securely hold the tool or workpiece.
*Collet must be assembled into a collet chuck nut before inserting into the collet chuck.

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 (4.8 / 5 · 5 reviews)

Riley P. ★★★★★

The 46mm length gives me plenty of grip for deeper setups, way more than my old stubby holders. Sizing is spot-on and the hardened surface hasn't shown a single chip after a month of swapping bits in and out.

Richard I. ★★★★★

The hardened tool steel really holds its grip tight without any flex, even when I’m torquing down on a 1/2" end mill. They seat smoothly into the nut every time, which is more than I can say for my old set.

Chloe H. ★★★★★

The runout on these is noticeably better than the generic imports I was using before, and the hardened steel finish feels much more precise. They seat firmly in the nut without any binding, which is exactly what I needed for my milling work.