(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 C Chamfer Form D Chamfer Form E

HM: (Carbide) Square Shank

(2–3) (3.5–5) (1.5–2)

3–5 Tapping 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 2 Class of Fit: 2B

Tapping Axial: Tapping Specs: 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
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ISO Metric Fine Thread

DIN — German Institute for Standardisation