Osg 1400111501 Thread Forming Tap 6-32 Unc Plug Cobalt

Product Description

The OSG 1400111501 is a thread forming tap designed for cold-forming internal threads in ductile metals without cutting or producing chips. Operating on the HY-PRO NRT series platform, this tap uses plastic deformation to create strong, work-hardened threads in through-hole applications. It is manufactured from cobalt high-speed steel for added heat and wear resistance, and it carries a steam oxide coating to improve lubrication retention and reduce galling during tapping operations. The 6-32 UNC thread profile with a plug chamfer of 4 to 4.5 threads makes it suitable for progressive thread engagement in production and maintenance environments. Overall length is 2 inches with a right-hand thread direction.

This tap is intended for through-hole threading in a range of ferrous and non-ferrous materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. It is a standard choice for machine shops, maintenance technicians, and manufacturing facilities where chipless tapping is preferred to avoid chip contamination in blind or sensitive assemblies. The H5 thread limit and 2B class of fit make it appropriate for standard commercial-tolerance fastener applications in light-duty mechanical assemblies.

Key Features

• Cobalt high-speed steel construction provides elevated heat resistance for demanding materials
• Steam oxide coating aids lubrication retention and reduces friction during forming
• Plug chamfer with 4 to 4.5 chamfered threads allows progressive thread engagement
• Thread forming design eliminates chips, reducing contamination risk in through-hole applications
• H5 thread limit with 2B class of fit for standard commercial fastener tolerances
• Right-hand thread direction, compatible with standard tapping machines and tap handles

Compatibility

Designed for through-hole thread forming in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces requiring a 6-32 UNC internal thread at a 2B class of fit.

Installation Notes

This tap should be installed by machinists or maintenance technicians using a properly aligned tapping machine, CNC machining center, or hand tap handle rated for the torque required by cobalt forming taps. Always apply an appropriate tapping fluid or cutting oil compatible with the workpiece material before forming threads. Ensure the pilot hole diameter is sized correctly for thread forming, as forming taps require a larger pilot hole than cutting taps of the same thread size. Verify spindle alignment before operation to avoid tap breakage or thread distortion.