modified truss head




Parameters

1.PHIL TYPE. #2 RECESS DEPTH:2.0--2.3
2.HEAT TREATMENT: CASE HARDNESS≥ 560 HV    
    CORE HARDNESS 320 - 400 HV    
    EFFECTIVECASE DEPTH:0.10--0.23    
3.FINISH: ZINC PLATED(3-5UM)