RUKO HGB-DIN352HSS-2x4.5-BSW Hand Tap Set, BSW 1/4 inch x 20 TPI, HSS-G, DIN 352, 2-Piece Set (Taper & Plug)

Cutting internal BSW threads by hand demands taps that stay sharp, align cleanly, and match the exact thread standard. The RUKO HGB-DIN352HSS-2x4.5-BSW hand tap set eliminates guesswork with two precision-ground HSS-G taps made to DIN 352 for British Standard Whitworth threads.

Who is it for

Machinists, maintenance technicians, and serious DIYers who need to produce accurate 1/4" x 20 TPI BSW threads in steel, non-ferrous metals, or plastics using a tap wrench.

Main features

• Thread standard: BSW (British Standard Whitworth)
• Thread size: 1/4" x 20 TPI
• Material: HSS-G (High-Speed Steel, ground)
• Standard: DIN 352
• Set contents: 2 taps (taper tap for starting, plug tap for finishing)
• Right-hand thread direction
• Recommended core hole diameter: 5.2 mm
• Overall length: 60 mm
• Thread length: 18 mm
• Shank diameter: 5.0 mm
• Square size: 4.0 mm
• 3 straight flutes for efficient chip evacuation
• Bright finish

Specifications

• Brand: RUKO GMBH
• Model: 1000022755
• MPN: HGB-DIN352HSS-2x4,5-BSW
• EAN: 4007140067227
• Type: Hand tap set
• Thread standard: BSW
• Thread size: 1/4" x 20 TPI
• Material: HSS-G
• Standard: DIN 352
• Set contents: 2 taps (taper, plug)
• Thread direction: Right-hand
• Recommended core hole diameter: 5.2 mm
• Overall length: 60 mm
• Thread length: 18 mm
• Shank diameter: 5.0 mm
• Square size: 4.0 mm
• Number of flutes: 3
• Cutting edge geometry: Straight flutes
• Surface finish: Bright
• Application: General purpose threading in steel, non-ferrous metals, and plastics

Tips

Use a suitable tap wrench and cutting fluid for best results. Drill the core hole to 5.2 mm before tapping. Start with the taper tap to establish the thread, then finish with the plug tap for full-depth threads.