Precision Twist Drill 5968496 Stub Drill Bit 5/16 in Hss

Product Description

The PRECISION TWIST DRILL 5968496 is a short-length stub drill bit designed for general-purpose drilling across a wide range of materials. Built from high-speed steel (HSS) with a steam oxide finish, it features a 135-degree split point that reduces walking on entry and requires no center punch on most surfaces. The straight shank and compact 79 mm overall length make it well suited for applications where clearance is limited or where a standard jobber-length bit would be too long. Two spiral flutes provide efficient chip evacuation during drilling operations.

This stub drill bit is used in metalworking, maintenance, and fabrication environments. The 5/16 inch diameter and 37 mm flute length with a 2.5XD cutting depth rating make it appropriate for moderate-depth holes in production and repair settings. Rated for use in aluminum, cast iron, copper, hard materials, magnesium, nickel, stainless steel, steel, synthetic materials, and titanium, it covers the material range common to machine shops, industrial maintenance crews, and trade professionals working with mixed-metal assemblies.

Key Features

• 135-degree split point reduces drill walking and improves positioning accuracy
• High-speed steel construction provides heat and wear resistance across hard and abrasive materials
• Steam oxide finish improves lubricity and corrosion resistance during use
• Short stub length suits confined spaces and low-clearance drilling setups
• Two spiral flutes promote chip removal and reduce heat buildup in the cut zone
• No coolant channel — suitable for dry or externally lubricated drilling only

Compatibility

Designed as an OEM-style replacement or direct-use stub drill bit compatible with standard straight-shank drill chucks and drill presses accepting a 5/16 inch shank. Rated for use in aluminum, cast iron, copper, hard materials, magnesium, nickel, stainless steel, steel, synthetic materials, and titanium.

Installation Notes

Install in any standard keyed or keyless chuck rated for a 5/16 inch straight shank before powering the drill or press. Ensure the workpiece is securely clamped before beginning the cut. Apply cutting fluid externally when drilling stainless steel, titanium, or other hard materials to manage heat and extend tool life. Do not exceed the recommended feed rate for the material being drilled, as this bit does not include an internal coolant channel.

Technical Specifications

• Drill Diameter (Fraction): 5/16 inch
• Drill Diameter (Decimal): 0.3125 inches
• Overall Length: 79 mm
• Flute Length: 37 mm
• Cutting Depth: 2.5XD
• Number of Flutes: 2
• Flute Type: Spiral
• Shank Diameter: 5/16 inch
• Shank Type: Straight
• Point Angle: 135 degrees
• Point Type: Split Point
• Cutting Direction: Right Hand
• Cutting Edge Material: High-Speed Steel (HSS)
• Body Material: High-Speed Steel (HSS)
• Finish: Steam Oxide
• Applicable Materials: Aluminum, Cast Iron, Copper, Hard Material, Magnesium, Nickel, Stainless Steel, Steel, Synthetic Material, Titanium
• Coolant Channel: None
• Weight: 0.595 pounds
• Sold As: Pack (Min Qty 1)

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 5968496