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Pengkumta Fasteners, a reputable manufacturer and supplier based in Bangkok, Thailand, is all about providing top-notch Square Bolts that are built for strength, durability, and dependable performance. Each bolt is crafted with precision engineering and made from high-quality materials, ensuring they stand up to wear, corrosion, and mechanical stress. With a variety of sizes, grades, and finishes available, our Square Bolts meet the diverse needs of various industries. We prioritize quality assurance and customer satisfaction, so you can trust that every product we offer meets international standards, making us a go-to partner for industries looking for reliable fastening solutions in Thailand and beyond.
Typically made from carbon steel, stainless steel, or alloy steel, Square Bolts come with surface finishes like zinc plating, hot-dip galvanizing, or black oxide to enhance their corrosion resistance. They boast impressive tensile strength, yield strength, and hardness, making them perfect for high-load applications. With excellent shear resistance and wear properties, they provide long-term stability even in tough environments. Their mechanical performance stays consistent under stress, torque, and vibration, ensuring that fastening is both safe and secure. These qualities make Square Bolts versatile and effective for a wide range of structural and mechanical applications.
| Specification | ||
|---|---|---|
| Material | Standards | Grades |
| Nickel Alloy | ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 | UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8825 (INCONEL 825), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3) |
| Stainless Steel | ASTM / ASME A/SA 193 / 194 | B 8 (304), B 8C (SS 347), B 8M (SS 316), B 8 T (SS 321), A 2, A 4 |
| Alloy Steel | ASTM / ASME A/SA 193 / 194 GR | B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M |
| Duplex Steel | UNS NO. S 31803, S 32205 | Range: M10 TO M100, LENGTH UPTO 5 METERS |
| Nonmetallic Materials: | Acrylic, Kel-F, Lexan, Polypropylene, Poly Vinyl Chloride, Teflon, Zytel 31, 101, 105 | |
| High-Temp Alloys | Discaloy, 19-9 DL, 16-25-6, A286, Titanium, Nimonic 80, Mulitmet, Haynes 25, Greek Ascalloy, Unitemp 252, Udimet 500, Rene 41, Inco 700, Inco 901, Hastelloy X, 235, Waspaloy, RA 330 | |
| Copper Base Alloys | Copper, Brasses: Yellow, Free-cut, Red, Naval, Bronze: Commercial, Phosphor, Silicon A & B, Aluminum, Silicon-Aluminum, Manganese, Ampco Alloys, Munitz Metal, Cupro-Nicles | |
| Aluminum Alloys: | 1100, 2011, 2014, 2017, 2024, 3003, 5052, 6053, 6061, 7075 | |
| Of Bolts | (C) | (D) | (F) | (H) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Width Corners Across \ | Diameter Of Body | Width Flats Across | Height Table | ||||||
| Maximum | Minimum | Maximum | Basic | Maximum | Minimum | Basic | Maximum | Minimum | |
| 1⁄2 | 1.0061 | 0.0995 | 0.0515 | 3⁄4 | 0.0750 | 0.0725 | 21⁄64 | 0.0348 | 0.0308 |
| 5⁄8 | 1.0326 | 1.0244 | 0.0642 | 15⁄16 | 0.0938 | 0.0906 | 27⁄64 | 0.0444 | 0.0400 |
| 3⁄4 | 1.0591 | 1.0494 | 0.0768 | 11⁄8 | 1.0125 | 1.0088 | 1⁄2 | 0.0524 | 0.0476 |
| 7⁄8 | 1.0856 | 1.0742 | 0.0895 | 15⁄16 | 1.0312 | 1.0269 | 19⁄32 | 0.0620 | 0.0568 |
| 1 | 2.0121 | 1.0991 | 1.0022 | 11⁄2 | 1.0500 | 1.0450 | 21⁄32 | 0.0684 | 0.0628 |
| 11⁄8 | 2.0386 | 2.0239 | 1.0149 | 111⁄16 | 1.0688 | 1.0631 | 3⁄4 | 0.0780 | 0.0720 |
| 11⁄4 | 2.0652 | 2.0489 | 1.0277 | 17⁄8 | 1.0875 | 1.0812 | 27⁄32 | 0.0876 | 0.0812 |
| 13⁄8 | 2.0917 | 2.0738 | 1.0404 | 21⁄16 | 2.0062 | 1.0994 | 29⁄32 | 0.0940 | 0.0872 |
| 11⁄2 | 3.0182 | 2.0986 | 1.0531 | 21⁄4 | 2.0250 | 2.0175 | 1 | 1.0036 | 0.0964 |
| 13⁄4* | 29⁄16 | 13⁄16 | |||||||
| 2* | 215⁄16 | 15⁄16 | |||||||
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Square Bolts are a go-to choice for heavy-duty applications where secure fastening is crucial. You’ll find them commonly used in construction, railways, bridges, wooden structures, and the assembly of heavy machinery, thanks to their strong grip and resistance to loosening. The square head design allows for better tightening with standard tools and minimizes the risk of slippage during installation. They’re also utilized in farming equipment, mining operations, and power plants, providing stability in high-vibration and high-stress conditions. Their versatility, durability, and user-friendly nature make them a preferred option across various industrial, mechanical, and structural projects.
We prioritize customer satisfaction and ensure a seamless experience by providing complete documentation alongside our premium square bolts. Our package includes the required documentation, such as a marketing invoice, package list, fumigation certificate, heat treatment protocol, quality assurance plan, and NABL-approved laboratory test report. In addition, we issue a range of test certificates for our square bolts, including MTC according to EN 10204/3.1b, PMI test certificate, 100% radiography test report and third-party inspection certificate.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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