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Shaft diameter tolerance	D(0~+0.005) Dm5
Material hardness	Powder High Speed Steel 64~67HRC Powder High Speed Steel 64~67HRC Surface 3000HV SKD11 60~63HRC SKH51 61~64HRC SKH51 61~64HRC Surface 3000HV
Coating treatment	no TiCN
B. Cutting edge length	L S X

Keyway type guide punch