Model NO.: FCHT
Keyword: Straight Fluting Tap
Overall Length: 58.2 Mm
Flute Length: 13 Mm
Flute: 3
Shank Diameter: 4 Mm
Tang: 3.5 Mm
Coating: TiCN/Ti/ No Coated
Type Of Tap: Straight Fluting Tap
Standard: Metric
Application: Motorize
Type Of Die: Just Taps
Material: Hssg
Specification: M4
Trademark: HEGONG/OEM
Cast Iron Specific Tap
1. Ticn Coating:
Proprietary coating technology enhances impact resistance, reducing chipping and edge breakage during interrupted cutting.
2 .New HSSG material:
Core material harder than HSSE(63-65 HRC), balancing wear resistance and shock absorption.
3. Multi-Standard Compatibility:
Supports ISO metric (M), UNF/UNC, and BSW thread standards for global applications.
4 . High-Speed Machining:
Suitable for dry or wet cutting at speeds up to 10 m/min (cast iron).
TYPICAL APPLICATION SCENARIOS
Automotive Manufacturing: Tapping engine block bolt holes (cast iron) and stainless steel exhaust manifolds.
Heavy Machinery: Threading cast iron pump housings and hydraulic valve blocks in construction equipment.
Food Processing Equipment: Corrosion-resistant threading of SUS304 stainless steel flanges and valves.
Mold & Tooling: Precision threads in alloy steel (SCM440) inserts for injection molds.
General Engineering: High-mix, low-volume CNC machining of cast iron and ductile iron parts.


| Size | L | Lc | L1 | d | k | Flute |
| M3 | 48.00 | 11.00 | 7.00 | 3.15 | 2.50 | 3 |
| M4 | 58.2 | 13 | 8 | 4 | 3.15 | 3 |
| M5 | 64.5 | 16 | 9 | 5 | 4 | 3 |
| M6 | 66 | 19 | 11 | 6.3 | 5 | 3 |
| M8 | 72 | 22 | – | 6.3 | 5 | 3 |
| M10 | 80 | 24 | – | 8 | 6.3 | 4 |
| M12 | 89 | 29 | – | 9 | 7.1 | 4 |