*Aerospace Threading: MJ 4H/5H per ISO5855 and UNJF-3B per ISO3161/ASME B1.15
*Trapezgewinde: Tr. 30 degree per DIN103,380,263
*ACME Threading: 29 degree per ASME B1.5/ASNI B1.8
*Vg Threading: 60 degree per DIN7756
*SZ Threading: 3 degree + 30 degree per DIN513-1~3
We can offer regrinding cutting edge for weariness taps per picture shown, that will be Increased by tool life totally.
*JBO can recalibrate weariness gauges for special threading to make sure its validity and reissue certificates per attachments of UNJEF-3A, EG M-6H mod, G-A, DIN158 ones.
*JBO can offer Multi-Checking Certificate per attachment of 1/4-28UNF-3A Option 4 to measuring Values of Pitch, Thread angle and flank angel, Pitch diameter and Minor Diameter, which are able to fully meet top of precision calibration in Optical Instrument, Medical Science and Aerospace industries.