Demand

Case No.9

IneedaM8 × 1 tap for tapping through holes in

hardened materials!

Tapping Condition Standard blank

Workpiece MaterialsS55C tempered steel(30HRC)
MachineMC
FeedSynchronous feed
Cutting FluidWater soluble cutting fluid
Bore Hole Sizeφ7.1
Bored Hole Length15mm(through hole)
Tapping LengthStep 1 is grinding the flute. 15mm

Tapping Speed 12.5m/min

  • Original flute design

A completed Add a coating

left hand spiral fluted tap

for through holes to tap

medium-hard

carbon steels!

Case No.10

I need an oversize thread inspection tool for a

M20 × 2.5 (GB) GO gage.

Intended use Standard blank

Workpiece Materials SCM440 Effective thread 20mm(through hole) length Classes of Class II+30(μm) Internal Threads Since the internal threads can shrink during the hardening Reason for process, we produce oversize taps oversize for this application. This simple inspection tool is for checking Step 1 is grinding the flute. II+30 oversize internal thread.

  • Specifications for a simple thread inspection tool

A completed

simple inspection tool

for a M20 × 2.5 (GB)

GO gage!