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GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
Specifications
Model Number :
Series 4289 HSS-E TiN Coated 8-Pitch
Thread fit :
ANSI 2B
Packaging Details :
Carton with Bubble paper which is suitable for long-distance transport
Delivery Time :
4 weeks
Coating :
TiN Anti-wear Coating
MOQ :
100
Chamfer type :
Form C
Brand Name :
GUHRING
Helix angle :
40°
Payment Terms :
T/T
Material :
HSS-E Cobalt High Speed Steel
Price :
2-15USD/PCS
Chamfer length :
2-3 complete threads
Description

GUHRING 4289 HSS-E Cobalt Tap 40° Helix 2B Fit for Blind Hole 8 Pitch UNC UNF Threading cutting Tap CNC tools
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading



Product Overview

The GUHRING Series 4289 HSS-E TiN Coated 8-Pitch Tap is a high-performance spiral flute machine tap engineered by Germany brand GUHRING, compliant with dual DIN/ANSI industrial standards. It adopts a 40° high helix spiral flute structure with Form C 2–3 thread chamfer, 2B thread fit tolerance and TiN golden coating, specially designed for blind hole tapping of American standard 8-pitch UNC/UNF thread parts, delivering excellent chip evacuation, wear resistance and stable internal thread precision on carbon steel and alloy steel.

Key Features
  • Brand: GUHRING (Germany professional threading tool manufacturer)
  • Series Model: 4289
  • Core Specification: 8-Pitch American standard thread tap
  • Tool Material: HSS-E (5% Cobalt high speed steel, high toughness & heat resistance)
  • Surface Coating: TiN (Titanium Nitride golden coating)
  • Flute Style: 40° High Angle Spiral Flute (upward chip discharge for blind holes)
  • Chamfer Type: Form C, 2–3 thread chamfer (semi-bottoming tap)
  • Thread Fit Class: 2B (ANSI standard internal thread medium tolerance)
  • Executive Standard: DIN / ANSI dual certification
  • Processing Target: Blind hole internal tapping, external coolant machining
Technical Specifications
Item Parameter
Full Series Name GUHRING Series 4289 8-Pitch Spiral Tap
Raw Material HSS-E Cobalt High Speed Steel
Surface Finish TiN Anti-wear Coating
Helix Angle 40° Spiral Flute
Chamfer Length Form C (2–3 complete threads)
Thread Tolerance Grade ANSI 2B
Applicable Thread Inch 8-Pitch UNC / UNF Thread
Machining Hole Type Blind Holes
Cooling Method External Coolant Supply
Standard Basis DIN & ANSI Dual Standard
Origin Made in Germany
Common Flute Count 3 / 6 flutes (depends on tap nominal diameter)
Standard Shank Square drive shank (SW dimension per DIN)
Applicable Workpiece Materials
  • Carbon steel (1018, 1045, A3 free cutting steel, ≤ HRC 30)
  • Low & medium alloy structural steel (4140, 40Cr, pre-hardened mold steel)
  • General mechanical carbon steel components for oil & gas, machinery industry
Typical Applications
  • Blind hole internal thread tapping for inch 8-pitch UNC/UNF standard parts
  • CNC machining center, lathe automated tapping mass production
  • Automotive, hydraulic, oil pipeline standard threaded fittings
  • Medium-load continuous tapping, long service life requirement scenarios
Advantages of GUHRING 4289 Series Tap
  • 40° high helix spiral flute: Chips spiral upward out of blind holes, avoid chip jamming and thread damage
  • HSS-E cobalt substrate: Superior red hardness, withstand high cutting temperature during high-speed tapping
  • TiN golden coating: Reduce friction coefficient, improve wear resistance, extend tool service life by 30%+ vs uncoated taps
  • Form C 2–3 thread chamfer: Balanced penetration performance, suitable for semi-bottom blind hole threading
  • ANSI 2B precision tolerance: Stable internal thread size, meet American standard assembly matching requirement
  • Germany original GUHRING precise grinding, consistent dimensional accuracy across batches
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GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading

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Product Detail
Model Number :
Series 4289 HSS-E TiN Coated 8-Pitch
Thread fit :
ANSI 2B
Packaging Details :
Carton with Bubble paper which is suitable for long-distance transport
Delivery Time :
4 weeks
Coating :
TiN Anti-wear Coating
MOQ :
100
Contact Supplier
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading
GUHRING 4289 HSS-E Cobalt Tap with 40° Helix and TiN Coating for Blind Hole Threading

Beijing Ward Yitong Technology Co., Ltd.

Verified Supplier
1 Years
qingdao
Since 2005
Business Type :
Manufacturer, Exporter
Main Products :
Carbide Cutting Tools, Carbide Cutting Insert, End Mill
Total Annual :
10000000-50000000
Employee Number :
>50
Certification Level :
Verified Supplier
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