Irwin 1012 Specifications:

Description: 4 – 40 NC
Tap Point Style: Taper Tap
No. of Flutes : 3

Irwin Machine Screw Tap (HCS) 1012 Features:
Ideal for routine maintenance, repair work and for rethreading where high accuracy and 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