Milwaukee 48-42-5121 Bi-metal Jig Saw Blade 18 Tpi 3 in 5pk

Product Description

The Milwaukee Electric Tool Corp 48-42-5121 is a 5-pack of bi-metal jig saw blades engineered for metal cutting applications. Each blade measures 3 inches in length with an 18 teeth-per-inch (TPI) configuration, delivering fine, controlled cuts through sheet metal, conduit, and similar ferrous and non-ferrous materials. The T-shank design provides a secure tool-free blade change on compatible jig saws. Bi-metal construction combines a high-speed steel tooth edge with a flexible alloy steel body, reducing blade breakage during aggressive cutting. Electricians, plumbers, and general trade contractors reaching for a jig saw to cut metal fittings, brackets, or enclosures will find this blade count and tooth pitch appropriate for production-rate work.

These blades are suited to residential and light commercial trade applications where metal cutting with a jig saw is required. Typical use cases include cutting metal electrical boxes, thin-wall conduit, metal studs, sheet steel, and copper or aluminum sheet stock. The 18 TPI pitch controls heat buildup and chip load on thinner stock. The 5-pack quantity supports ongoing job-site use without frequent restocking.

Key Features

• Bi-metal construction for extended blade life and reduced breakage during metal cutting
• 18 TPI tooth pitch for fine, controlled cuts in sheet metal and thin-wall material
• 3-inch blade length accommodates standard metal cutting depth ranges on handheld jig saws
• T-shank interface for tool-free, secure blade changes on T-shank compatible jig saws
• 5-pack quantity supports job-site productivity with backup blades on hand

Compatibility

Designed for use with T-shank compatible jig saws; intended for metal cutting applications requiring an 18 TPI bi-metal blade.

Installation Notes

Blade changes should be performed with the jig saw unplugged or the battery pack removed. Verify the T-shank locking mechanism is fully engaged before cutting. Wear appropriate eye and hand protection when handling or changing blades. Always confirm blade compatibility with the jig saw manufacturer specifications before use.

Technical Specifications

• Blade Length: 3 inches
• Teeth Per Inch (TPI): 18
• Shank Type: T-Shank
• Blade Material: Bi-Metal
• Application: Metal Cutting
• Pack Quantity: 5
• Weight: 1.4 pounds

Standard Information

• Brand: Milwaukee Electric Tool Corp
• Manufacturer Part Number: 48-42-5121