(continued)

Tapping Icons

HSS-E-PM: HSS-E: High-Speed High-Speed Steel

Tapping:Threading:Threading:Steel with Cobalt Alloywith Cobalt Alloy for
Blind HoleThrough HoleBlind Holefor Materials withMaterials with Higher

Higher Hardness Hardness (PM = Power Metal Steel)

Chamfer Form CChamfer Form DChamfer Form E
HM: (Carbide)Square Shank
(2–3)(3.5–5)(1.5–2)
3–5Tapping Helix:Tapping Helix:Tapping Helix:Tapping Helix:
Plug Chamfer (3–5)
Angle: 0°Angle: 10°Angle: L8°Angle: 15°
Tapping Helix:Tapping Helix:Tapping Helix:Tapping Helix:Tapping Helix:
Angle: L15°Angle: 25°Angle: 30°Angle: 42°Angle: 45°

Tapping: Through

DIN Number 371 DIN Number 374 DIN Number 2174 DIN Number 376

Coolant

Flood Coolant:Through Coolant:Manufacturer’s
ISO 2Class of Fit: 2B
TappingAxial: TappingSpecs: JIS

Class of Fit: 3B Class of Fit: 6H Class of Fit: 6HX Class of Fit: 6G ANSI

Unified CourseUnified Fine Thread:Unified FineUnified CourseISO Metric
Thread: J ProfileJ ProfileThreadThreadCoarse Thread

ISO Metric Fine Thread

DIN — German Institute for Standardisation