Machine Screw Tap, National Special Thread, #14 x 20 Cabinet & Drawer Hardware Do not puncture or incinerate

Do not puncture or incinerate container

All season protection against drafts

No dielectric union needed

It takes just minutes to put them over all the windows in your house

Use on non-crops areas

Machine Screw Tap, National Special Thread, #14 x 20 Cabinet & Drawer Hardware Do not puncture or incinerate#14 x 20, National Special Thread, Machine Screw Tap, Carbon Steel, Ideal For Routine Maintenance, Repair Work & For Rethreading Where High Accuracy & Tolerance Thread Is Not Critical, Straight Flutes Are Ground To Provide Rapid Chip Removal For Efficient Threading, Designed For Hand Threading Work In A Variety Of Materials Taps Produce A Class 2B Thread, Use Drill Bit 13 64".