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Starrett 18AA Automatic Center Punch With Adjustable Stroke, 4" Length, 7/16" Diameter

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Specifications for this item
Number of Items
Part Number
Item Weight
0.01 pounds
094704908106 , 049659501193
Brand Name
0049659501193 , 0094704908106
One Year on defects in material and workmanship

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Key Features

  • Adjustable Stroke
  • Steel is hardened and tempered
  • Knurled finger grips for ease of handling
  • Automatic center punch with 4" length and 7/16" diameter punches a starter dimple without the need for a hammer
  • Stroke impact can be adjusted by turning knurled cap
  • Spring tension regulates stroke for uniform dimple size at each setting
  • Hardened and tempered steel components provide wear resistance and strength
  • Point can be removed for replacement or sharpening

Package Details

Shipping Weight: 0.01 pounds
Package Size: 4 x 1.2 x 0.7 inches

Product Description

The Starrett 18AA automatic center punch with adjustable stroke is 4" long with a 7/16" (11 mm) diameter for creating a starter dimple without the need for a hammer. The punch has an adjustable stroke, which can be set by turning the knurled cap and is regulated by spring tension for uniform dimple size at every setting. The punch is made from hardened and tempered steel components that provide wear resistance and strength. It has a round handle that is knurled for grip. The point can be removed for replacement or sharpening.

Center punches make small dimple marks in a workpiece to help guide a drill bit. Manual center punches have a metal shank with a point and are typically tapped with a ball-peen hammer to mark the material. Automatic center punches have an internal spring mechanism that enables them to mark the material without using a hammer, leaving one hand free for steadying the work.

The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company, founded in 1880, is headquartered in Athol, MA.

From the Manufacturer

These punches are universally used and are well-proportioned for ease of use

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