Maykestag HSS-Co5 Machine Tap G 1 BSPP Straight Fluted Whitworth Pipe Thread
Professional G 1 straight-fluted machine tap manufactured from HSS-Co5 for producing parallel Whitworth pipe threads to DIN ISO 228. Features an 11 TPI thread, 55° Whitworth profile, Form B chamfer and through-hole geometry for controlled and accurate machine tapping.
The Maykestag Code 5204 is a precision machine tap designed for producing G parallel Whitworth pipe threads, commonly referred to as BSPP threads. This G 1 variant has 11 threads per inch and is manufactured from HSS-Co5 cobalt-alloyed high-speed steel for dependable cutting performance and wear resistance. The straight-fluted geometry and Form B chamfer are intended for through-hole tapping, where the open hole allows chips to clear beyond the threaded section during machining.
Product highlights
- HSS-Co5 construction: Cobalt-alloyed high-speed steel provides a combination of toughness, heat resistance and cutting-edge durability for professional machine tapping.
- G 1 BSPP thread: Produces parallel Whitworth pipe threads to DIN ISO 228.
- 11 TPI thread: Correct thread count for the G 1 size in the Code 5204 range.
- 55° Whitworth profile: Precision thread geometry for the specified G pipe-thread form.
- Straight-fluted design: Robust flute geometry suited to controlled machine tapping.
- Through-hole application: Designed for threading holes that continue completely through the workpiece.
- Form B chamfer: 3.5-5 pitch lead section provides progressive cutting engagement during tapping.
- DIN 5156 tool standard: Manufactured to the specified machine-tap standard for this tool series.
- 30.75mm core hole: Maykestag specifies a 30.75mm pre-drilled core-hole diameter for this G 1 variant.
- Defined tapping depth: Catalogue geometry indicates a thread-depth guideline of ≤1.5 × d1.
Why Choose Maykestag?
Maykestag is an Austrian cutting-tool brand focused on precision-manufactured tools for professional machining. Accurate thread geometry, controlled dimensional tolerances and the correct cutting material are particularly important with machine taps, where consistency directly affects thread accuracy, tool life and process reliability.
The Code 5204 series combines HSS-Co5 tool material with straight-fluted through-hole geometry and a 55° Whitworth thread profile for producing G parallel pipe threads. Clearly defined thread sizes, pitch values, tap dimensions and core-hole requirements help machinists select and apply the correct tap with confidence.
Designed for Accurate Through-Hole Pipe Threading
The Code 5204 geometry is designed specifically for machine tapping of parallel Whitworth pipe threads. The Form B chamfer provides a gradual cutting lead, while the straight-fluted construction gives the tap a strong and stable cutting section. In a through hole, the open space beyond the thread allows chips to clear from the cutting area. Correct pre-drilling, alignment, cutting speed, lubrication and machine conditions help produce accurate threads while reducing unnecessary tapping torque and tool wear.
