Ningbo High Tensile Bolts Ltd is located at Ningbo, China. Our company is a professional Fastener solution system company. As a professional fastener company, Ningbo High Tensile Bolts Ltd. control quality of the products and manage the delivery strictly according to ISO 9001: 2015 Quality System. Our company specializes in various kinds of high strength fasteners with annual output of 30,000 tons. Ningbo High Tensile Bolts Ltd major products standard as follows, Hex Bolts (A307), Heavy Hex Bolts (A193-B7/B7M, B8/B8M, A307B, EN14399-3/EN14399-4), Structural Bolts (A325, A490, DIN6914), Flange Bolts (DIN6921), Hex Cap Screw (SAE J429 GR.2/5/8), Hexagon socket Head Cap Screws (DIN912). Hex Nut (A307, SAE J995, DIN934, ISO4032), Heavy Hex Nuts (A194 GR.2H/2HM, 7/7M, 8/8M), Structural Nuts (A563 Gr. C/DH,10S, DIN6915), Hex Jam Nuts (SAE J995), Heavy Hex Jam Nuts (A194), Lock Nuts (DIN985), Threaded Rods(A193-B7, A320-L7, DIN975-8.8/10.9), Stud Bolts(A193-B7/B7M), Hardened Flat Washer(F436