countersunk square neck bolts manufacturers DIN912 SOCKET CAP SCREWS ITEM: DIN912 HEXAGON SOCKET HEAD CAP SCREWS MATERIAL: MEDIUM CARBON STEEL , ALLOY STEEL DIMENSION: DIN912 SPECIFICATION FINISHING: BLACK ZINC PLATED YELLOW ZINC PLATED HOT DIP GALVANIZED Head: Hex socket Material: Carbon steel. Stainless steel Case hardness: Steel/ Rodwell C44 min Plating: Zinc. yellow zinc. black zinc. black oxide. dacromet. ruspert xylan Packing: As customer required Sample lead time: within 6-10 days We also could produce according to buyer's drawing or sample/ non-standard fasteners. We can accept all kinds of payment term. 8.8 grade hexagon socket head cap screw Raw Material:Carbon seel & copper & stainles steel Quality:High Quality MOQ:100,000 PCS SPQ:20,000 PCS/ As customer request Specifications:Per customer's requirement Standard:ISO. DIN. ANSI. JIS. BS. Non-standard Surface:Zinc. yellow zinc. black zinc. black oxide. dacromet. ruspert xylan Certification:ISO9001 Profassional:WeiFeng fastener has specialized in fastener products than 10 years Service:All the services/ High quality service Packing:Boxes or pallet or per customer need Delivery time:30-45 Days after per actual volume countersunk square neck bolts manufacturers website:http://www.hualongfasteners.com/other-bolts/