RUKO HGB-DIN352-HSS-55° Juego de machos de roscar manuales BSW de 3 piezas, 1/4 inch - 20 Gg, HSS-G, rectificado, blanco

This 3-piece hand tap set cuts British Standard Whitworth (BSW) threads with a 55° flank angle in unalloyed and low-alloy steels up to 900 N/mm². The set includes taper, second, and plug taps for progressive thread cutting, all made from ground HSS-G high-speed steel with a bright finish.

Advantages

Ground HSS-G steel delivers durable cutting edges and reliable performance in general-purpose hand tapping. The three-tap configuration enables sequential cutting, reducing torque and improving thread quality in through and blind holes.

Suitable for

• Hand tapping of 1/4" - 20 Gg BSW threads
• Unalloyed and low-alloy steels up to 900 N/mm²
• General maintenance and repair work

Key specifications

• Thread standard: DIN 352, BSW 55°
• Thread size: 1/4" - 20 Gg
• Material: HSS-G, ground
• Overall length: 63 mm, thread length: 19 mm
• Shank diameter: 6.0 mm, square drive: 4.9 mm
• Core hole diameter: 5.0 mm
• Cutting direction: right-hand, straight flutes
• Surface: bright (uncoated)

Recommendations

Use with a suitable tap wrench and cutting fluid for best results. Pre-drill with a 5.0 mm core hole.