• Model NO.：M4*20
• Head Style：Customied
• Standard：Customized
• Grade：8.8
• Application：Chemical Industry
• Finish：Black
• Head：Square with Washer
• Washer：9.8--10.0
• Height of Head：11mm
• Thread：Half Thread,Length 35mm
• Flat Washer：1.65mm*12mm
• Transport Package：Bulk,Ppbag,Small Box in Carton with Pallets
• Specification：many size
• Origin：China
• HS Code：7318
• Production Capacity：500tons Per Month
• Package size per unit product：27.00cm * 26.00cm * 15.00cm
• Gross weight per unit product：16.000kg

Self drilling screwsStandard: IFI,DIN,JIS,GB,Special DesignSize Range: M1.4-M8(0#-14# &M8)Length Range: 6mm-300mmMaterial: Carbon steel and stainless steel A2 A4 & SS410                    FLATPANHWHHWFBUGLEWAFERPAN WASHEROVALTRUSSROUNDDRIVE         PHILLIPSSQUAREPOZISQUARE+PHILTORXSLOTTEDPHIL+SLOTTEDOTHER  POINT TYPE    TEK#1TEK#2TEK#3TEK#4TEK#5TYPE 17    THREAD TYPE   TYPE-ABSB TYPECSB TYPEHI-LOWMACHINEDOUBLEOTHER   10#-12 THD6#-20 THD8#-32 THD       12#-11 THD7#-19 THD10#-24 THD   14#-10 THD8#-18 THD12#-24 THD    10#-16 THD14#-20 THD   PLATING  PLAINZINC PLATEDCOLOR ZINC PLATEDBLUE ZINC PLATEDBLACK PHOSPHATEGRAY PHOSPHATEBLACK ZINC PLATEDWHITE ZINC PLATED  BLACK OXIDEDECROTIZEORUSPERTXYLANNICKELBRONZESPRAY PAINTOTHER    SERRATION UNDER HEADW / O WASHERW / BONDED WASHERW / PVC WASHERW / STEEL EPDMW/RUBBER WASHERW / HEAD MARKW / WINGOTHER