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HUACHAO STANDARD UNIT MOULD LIMITED LIABILITY COMPANY is a leading manufacturer & exporter specializing in producing fastener melds and catering to fastener industry over 20 years with quality products and sound reputation . Huachao specializes in R&D and production of Screw Forming Tools as header punch(second punch),thread rolling flat dies,carbide heading dies mainly three categories. Second punches comprising of variety of recess in slotted,Phillips,slotted/Phillips combination,pozi,hex socket,six-lobe(torx),square and customized types, head types comprise of more than 10 categories as pan head, flat head,CSK head,oval head and so on, which in production in accordance with standards of JIS/DIN/ISO/ANSI/BS/GB. The punches we supply for customers including: Phillips Header Punches Pozy punches Slotted/Phillips combination header punch Hex socket header punch 6 lobe (torx) Square header punches Recess punch pins Special punches Special punch pins Special punches for customization(please offer drawings) How to make an orderStandard Application Head style Nominal size Drive Dimension (DxLmm) Remark J-JIS M-Machine Screw F-Flat head JIS-M20 M23 M30 Phillips（+） 12x25 plain A-ANSI W-Wood Screw P-Pan head ANSI-#2 #4 #6 #8 Slotted（-） 14x25 Yellow TIN D-DIN T-Tapping Screw T-Truss head DIN-M20 M22 M29 Slot/Phillips Combination(+/-) 18x25 Purple TIN I-ISO B-Bingding head Pozi (*) 23x25 O-Oval head Six-lobe 12x14.5 R-Round head Square 14x14.5 Triangle 18xx18 Hexagon 23x25