Through hole

 

Form A
6-8 Threads Lead

 

Form B
4-5 Threads Lead with Spiral Point

 

Form B-AZ
4-5 Threads Lead with Spiral Point and interrupted threads


  Blind hole

 

Form C
2-3 Threads Lead

 

Form C/RSP
2-3 Threads Lead,
15° or 35° Spiral Flute

Recommended Application of Machine Taps

Art.-No. M

373/383

374/384

375/385

376/386

377/387

379/389

Art.-No. Mf

 

394

395

 

397

 

Art.-No. BSW

   

705/715

 

707/717

 

Art.-No. UNC

   

745/755

 

747/757

 

Art.-No. UNF

   

765/775

 

767/777

 

Art.-No. G (BSP)

 

784

785

 

787

 

Form

A

C

B

15°RSP

35°RSP

B-AZ

Bohrungsart

Material

           

Structural Steel up to
500 N/mm

15°RSP 

35°RSP 

B-AZ 

Structural Steel over
500 N/mm

15°RSP 

35°RSP 

 

free cutting Steel

   

 

35°RSP 

 

Cementation Steel,
heat treatable Steel

   

 

35°RSP 

B-AZ 

Tool Steel

   

 

35°RSP 

 

Stainless Steel

   

 

35°RSP 

B-AZ 

Cast Steel

   

15°RSP 

35°RSP 

 

Cast Iron, spheroidal graphite Iron

 

       

Malleable Cast Iron

15°RSP 

35°RSP 

 

Brass, short-chipping

 

       

Brass, long-chipping

   

15°RSP 

35°RSP 

 

Bronzes

   

 

35°RSP 

 

Copper

   

15°RSP 

35°RSP 

 

Al-alloys, short chipping

 

 

35°RSP 

 

Al-alloys, long chipping

   

15°RSP 

35°RSP 

B-AZ 

Zinc Alloys

   

15°RSP 

35°RSP 

 

Magnesium Alloys

 

 

35°RSP 

B-AZ 

Thermoplastics

   

 

35°RSP 

 

Thermosetting Plastics