RUKO HGB-DIN352-HSS-60°-7/8 handtap, UNC 7/8-9, HSS, DIN 352, plug tap

Threads 7/8-9 UNC with a 60° thread angle and 9 threads per inch, made from high-speed steel for durability.

Overview

The RUKO HGB-DIN352-HSS-60°-7/8 is a hand tap designed for cutting Unified National Coarse (UNC) threads with a nominal diameter of 7/8 inch and 9 threads per inch. Manufactured to DIN 352 standards, this plug tap (intermediate) features a straight flute design with 4 flutes and a right-hand cutting direction. The tap is made from high-speed steel (HSS) with a bright finish, suitable for general purpose threading in unalloyed and low-alloyed steels, cast iron, and non-ferrous metals.

What stands out

• Thread standard: UNC (Unified National Coarse)
• Nominal thread diameter: 7/8 inch
• Threads per inch (TPI): 9
• Thread angle: 60°
• Material: High-speed steel (HSS)
• Manufacturing standard: DIN 352
• Cutting direction: Right-hand
• Flute type: Straight flute
• Number of flutes: 4
• Tap type: Plug tap (intermediate)
• Surface finish: Bright

Technical details

• Overall length (L1): 110 mm
• Thread length (L2): 38 mm
• Shank diameter (d2): 18 mm
• Square drive size (a): 14.5 mm
• Tolerance class: Standard (e.g., H2/H3 for UNC)
• Recommended application: General purpose threading in unalloyed and low-alloyed steels, cast iron, non-ferrous metals

Our verdict

A reliable HSS hand tap for UNC 7/8-9 threading, built to DIN 352 with a straight flute design for efficient chip evacuation.