Greenlee 50191721 Bi-Metal Hole Saw, 3-5/8 IN Variable Pitch

Greenlee 50191721 Bi-Metal Hole Saw, 3-5/8 IN Variable Pitch

The Greenlee 50191721 Bi-Metal Hole Saw is built for electricians and installers who need clean, accurate holes when running 3.000 IN conduit through steel, wood, or composite panels. Featuring a variable-pitch tooth design, this hole saw delivers a 3-5/8 IN hole diameter with a 1-5/8 IN cutting depth, giving installers enough capacity to punch through thicker enclosure walls, junction boxes, and structural panels in a single pass without repositioning the tool. Manufactured in the US, the bi-metal construction combines a flexible backing band with hardened high-speed steel teeth, balancing durability with resistance to breakage during repeated use on jobsite panels and enclosures. Compact overall dimensions keep the saw easy to maneuver in tight electrical rooms and panel interiors.

Key Features

• Hole Diameter: Cuts a 3-5/8 IN diameter hole, sized for use with 3.000 IN conduit runs.
• Cutting Size: 1-5/8 IN cutting depth allows the saw to fully penetrate standard-thickness enclosure and panel material without repositioning.
• Durable Construction: Bi-metal build pairs a hardened tooth edge with a resilient body, improving resistance to chipping and breakage compared to single-material hole saws.
• Variable Pitch Tooth Design: The variable-pitch tooth pattern is designed to reduce vibration and chatter while cutting, helping produce a cleaner hole edge and extending blade life.
• Compatible Arbors: Designed for use with Greenlee Quick Change Arbor No. 2801 or Standard Arbor No. 37156, allowing fast changeovers between hole saw sizes on the jobsite.
• Compact Footprint: Overall product dimensions of 5.900 IN length, 3.550 IN width, and 1.900 IN height keep the saw manageable for use in tight panel and enclosure spaces.
• Made in the USA: Manufactured in the US for consistent quality control on every unit.

Technical Specifications

• Application: For 3.000 IN Conduit
• Country Of Origin: US
• Cutting Size: 1-5/8 IN
• Hole Diameter: 3-5/8 IN
• Product Height: 1.900 IN
• Product Length: 5.900 IN
• Product Type: Variable Pitch
• Product Width: 3.550 IN
• Use With Quick Change Arbor No: 2801
• Use With Standard Arbor No: 37156
• Volume: 39.7955 CI

Typical Applications

• Cutting Conduit Entry Holes in Electrical Enclosures
• Panelboard and Junction Box Fabrication
• Commercial and Industrial Electrical Installations
• Retrofit and New Construction Conduit Runs

Why Greenlee?

Greenlee is a trusted name among electrical professionals for tools built to withstand daily jobsite use. The 50191721 hole saw's bi-metal construction and variable-pitch tooth geometry are designed to hold up through repeated cuts into panels and enclosures, while compatibility with Greenlee's Quick Change and Standard Arbor systems keeps crews moving efficiently between hole sizes. For electricians who need a reliable 3-5/8 IN hole saw sized for 3.000 IN conduit work, the Greenlee 50191721 delivers dependable, code-ready cutting performance backed by US manufacturing and consistent quality control on every unit produced.