Irwin 4935106 Jobber Drill Bit 5/32 Inch Hss

Product Description

The IRWIN 4935106 is a 5/32 inch high speed steel jobber-length drill bit designed for general-purpose drilling in metal, wood, and plastics. It features a 135-degree, 4-facet split point that self-centers on contact, reducing the need for a center punch and minimizing walking on smooth surfaces. The bright uncoated finish is standard for HSS jobber bits used in general trade and shop environments. At 3.5 inches overall length with a 2-inch flute length, it fits standard drill chucks and drill presses used by electricians, plumbers, HVAC technicians, and general contractors for everyday hole-making tasks.

This bit is suited for light-duty to medium-duty drilling in residential and commercial trade applications. Typical uses include drilling clearance holes for fasteners, conduit anchors, and pipe hangers in sheet metal, mild steel, aluminum, wood framing, and plastic enclosures. The right-hand spiral flute and straight cylindrical shank make it compatible with standard 3-jaw chucks on corded and cordless drill drivers. It is sold individually as a single-piece replacement or add-on to an existing bit set.

Key Features

• 135-degree, 4-facet split point self-centers without a center punch
• High speed steel construction for general-purpose drilling across multiple materials
• Bright uncoated finish — no coating to chip or peel during regrinding
• Right-hand, regular spiral flute clears chips efficiently during through-drilling
• Straight cylindrical shank fits standard 3-jaw chucks without adapters
• ANSI-specification jobber length for consistent fit in drill indexes and pouches

Compatibility

Designed as a general-purpose replacement jobber drill bit for use in any standard 3-jaw chuck accepting a 5/32 inch straight shank. Part of IRWIN Series 49351.

Installation Notes

Always secure the workpiece before drilling to prevent rotation. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and improve hole quality. Ensure the drill or drill press is powered off and the bit is fully seated and tightened in the chuck before starting. Discard bits with visible cracks, chipped cutting edges, or signs of heat discoloration that indicate loss of temper.