RUKO HGB-DIN352-HSS-60°-5/16 UNC Hand Tap, HSS, 5/16-18 UNC, Finishing Tap

For machinists and maintenance technicians threading through-holes in steel, cast iron, or non-ferrous metals, the RUKO HGB-DIN352-HSS-60°-5/16 hand tap delivers precise UNC threads. This finishing tap cuts a 5/16-18 UNC thread with a 60° thread angle, conforming to DIN 352 for reliable interchangeability.

Key specifications

• Tool type: Hand tap
• Thread standard: UNC (Unified National Coarse)
• Nominal thread size: 5/16 inch
• Threads per inch: 18
• Tool standard: DIN 352
• Material: High-speed steel (HSS)
• Tap stage: Finishing tap
• Thread direction: Right-hand
• Thread angle: 60°
• Thread tolerance: 2B
• Overall length: 70 mm
• Thread length: 20 mm
• Shank diameter: 6.0 mm
• Square drive size: 4.9 mm
• Recommended core hole diameter: 6.6 mm
• Surface finish: Bright (uncoated)
• Cutting edge geometry: Straight flute

Why choose it

Made from high-speed steel, this tap withstands the demands of general-purpose threading in unalloyed and low-alloy steels, cast iron, and non-ferrous metals. The bright finish reduces friction, while the straight flute design efficiently evacuates chips in through-hole applications.

Ideal use cases

• Creating or repairing 5/16-18 UNC threads in machinery and equipment
• Maintenance and repair operations in metalworking shops
• General-purpose threading in a range of materials

Good to know

The finishing tap is the final stage in a three-piece tap set, producing the final thread profile. For best results, use a 6.6 mm drill for the core hole. The square drive accommodates standard tap wrenches.