Osg 1003700 Straight Flute Tap 6-32 Unc Plug Hss

Product Description

The OSG 1003700 is a straight flute plug tap designed for cutting internal threads in through holes and shallow blind holes. Ground from high-speed steel and left in a bright, uncoated finish, this tap cuts 6-32 UNC right-hand threads with 3 flutes and an H1 thread limit for close tolerance work. The plug chamfer distributes the cutting load across several leading threads, making it well suited for both hand tapping and machine tapping operations. Overall length is 2 inches with an 11/16-inch thread length, keeping the tool compact for production and maintenance applications.

This tap is used in general metalworking, maintenance, repair, and light manufacturing where 6-32 UNC fastener holes are required. It is appropriate for thread-cutting in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The straight flute geometry works best in through-hole applications and short blind holes where chip evacuation is not a critical concern. Machinists, toolmakers, and maintenance technicians regularly reach for this tap in both manual and CNC tapping setups.

Key Features

• 6-32 UNC thread form with right-hand direction and H1 thread limit for consistent fit
• 3 straight flutes for rigidity and straightforward chip clearance in through-hole work
• Plug chamfer distributes entry load across multiple threads, reducing tap breakage risk
• High-speed steel construction provides good wear resistance across a range of common work materials
• Bright, uncoated finish - no additional buildup on tap diameter, suitable for close-tolerance H1 work
• Compact 2-inch OAL fits standard tap holders and tapping heads without extension

Compatibility

Designed for cutting 6-32 UNC internal threads in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel workpieces using standard tap holders accepting a 0.141-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician following standard tapping procedures. Always use the correct tap drill size for 6-32 UNC before tapping, and apply appropriate cutting fluid for the workpiece material. Ensure the workpiece is securely fixtured and the tap is properly aligned to avoid bell-mouthing or tap breakage. When machine tapping, verify spindle speed and feed rate are appropriate for the material and tool diameter.