Starrett H11-6 Square Head for Combination Square Blade - 6

The Starrett H11-6 is a precision-machined square head only, designed to fit Starrett's standard 6" combination square blades. This head is the workhorse component of the combination square system, allowing machinists, toolmakers, and craftsmen to check 90° and 45° angles, measure depth, and use as a level — all with Starrett's renowned accuracy.

Constructed from hardened, ground, and satin-chrome finished cast iron, the H11-6 features a precision-ground base that delivers reliable squareness and flatness. The locking screw allows the blade to be set and secured at any position along its length, offering versatile measuring and layout capability.

Key Features:

• Fits standard Starrett 6" combination square blades
• Hardened and precision-ground bearing surfaces for accuracy
• Includes 90° and 45° faces for angle checking
• Built-in spirit level for plumb and level work
• Scriber storage slot included
• Durable satin-chrome finish resists corrosion
• Lock nut secures blade at any position along its length
• Compatible with Starrett Series 11 combination square system

The H11-6 square head is ideal as a replacement or spare component for an existing combination square set, or for building a customized layout and inspection tool kit. Starrett has been manufacturing precision tools to exacting standards since 1880, making this head a trusted choice in professional shops worldwide.