Sumit Impex is a leading South African manufacturer and supplier of high-quality bolts, including stainless steel bolts, nickel alloy bolts, duplex & super duplex bolts, cupro-nickel bolts, aluminum bolts, and other grade bolts. We provide a range of industry-standard fastener products that are critical for numerous industries. Our bolts come in various grades and dimensions, are accurate, and can handle heavy stress levels. These bolts meet the rigorous demands of performing under high duress, aligning with our clear intent to deliver high-quality products.
At Sumit Impex, we utilize the best manufacturing plant and modern technologies to produce fasteners that adhere to internationally set standards, including ASTM, ASME, ANSI, UNS, and DIN, ensuring the best market quality. Our team of professionals oversees all production stages to ensure that each final product is an enhancement of the previous process.
Sumit Impex is a Supplier of Bolts, Biggest Stockist of Bolts as per Standards in South Africa.
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Our services cater to various sectors, including construction, automobile, shipbuilding, and the oil and gas industries. Our fasteners, such as stainless steel 304 bolts and nickel 200 bolts, are designed to address issues of strength, security, and proficiency in various operations. Sumit Impex is your one-stop shop for fastening solutions, whether you need commercial-grade fasteners or ones tailored to your needs. Our business operations are heavily focused on customer satisfaction, and we aim to build strong relationships with our clients. Our professional customer support team is available to assist with any queries or complaints, ensuring your satisfaction from the time of placing the order to the delivery of the product.

Standard Specification For Bolt Manufacturers in South Africa
Standard | DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards |
Size | M3 – M100 | 3/6″ – 4″ | Custom Sizes |
Length | 3 mm – 200 mm | Custom Sizes |
Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
Form | Hex, Threading, Square, Round as per Gauge Etc. |
Head | Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc. |
Neck type | Hex, Square, Triangular, Oval & Knurled etc. |
Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
Types of Bolt Manufacturers in South Africa
Hex Bolt
Hex Bolt
Heavy Hex Bolt
Heavy Hex Bolt
Anchor Bolt
Anchor Bolt
Eye Bolt
Eye Bolt
Machine Bolt
Machine Bolt
J Bolt
J Bolt
U Bolt
U Bolt
Square Bolt
Square Bolt
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