ASTM A490 Heavy Hexagon Bolt HDG/Black Finish

• Customization: Available
• Material: Carbon Steel
• Type: Hexagon Head
• Model NO.: HEX BOLTS
• Head Style: Hexagonal
• Standard: ANSI
• Grade: B7
• Transport Package: Pallets
• Specification: 1100*800
• Trademark: M
• Origin: Ningbo
• HS Code: 7318151001

Product Description

Before its phase-out in 2016, the esteemed ASTM A490 specification governed the production of quenched and tempered alloy steel structural connectors, notably the robust heavy hex structural bolts, ranging from 1/2″ to 1-1/2″ in diameter, boasting a minimum tensile strength of 150 ksi. Designed for structural junctions, these bolts present shorter thread lengths compared to standard hex variants. Consult our website's Structural Bolts section for comprehensive details on thread lengths and associated dimensions. A490 bolts share functional and dimensional characteristics with A325 heavy hex structural bolts, yet are crafted from superior alloy steel, yielding a fastener of greater strength. The A490 standard is exclusively relevant to heavy hex structural bolts. For bolts variably threaded yet mechanically akin to structural bolts, please refer to Specification A354 grade BD. Notably, ASTM A490 bolts are prohibited from zinc-based coating techniques such as hot-dip galvanizing, mechanical deposition, or electroplating due to hydrogen embrittlement risks. However, ASTM sanctions the application of Zinc/Aluminum Corrosion Protective Coatings per ASTM F1136 Grade 3, commercially recognized as Geomet. Furthermore, A490 bolts require rigorous Magnetic Particle Inspection to detect potential Longitudinal Discontinuities and Transverse Cracks, ensuring compliance with the A490 specification standards.
Ningbo Beilun Milfast Metalworks Co., Ltd., a distinguished fasteners enterprise in Ningbo, excels in crafting Threaded Rods, Studs, Bolts, Nuts, Washers, and precision-engineered Stamping metal parts. Our commitment to superior product quality and exceptional service has earned unwavering trust from our esteemed clientele.

Milfast Metalworks proudly offers an expansive array of product specifications and types, including:
THREADED RODS, STUD BOLTS, HEAVY HEX BOLTS, STRUCTURAL BOLTS, HEX BOLTS, FLANGE BOLTS, TRACK BOLTS, CARRIAGE BOLTS, HEAVY HEX NUTS, STRUCTURAL NUTS, HEX NUTS, FLANGE NUTS, CASTLE NUTS, SQUARE NUTS, FLAT WASHERS, SPRING WASHERS, SPECIAL FASTENERS, and a diverse selection of METAL PARTS tailored to your requirements.
At Ningbo Beilun Milfast Metalworks Co., Ltd., we manufacture premium-quality fasteners including standard Threaded Rods, bolts, nuts, stud bolts, and washers as detailed below:
ASTM A325/A325M/A490/A490M Type 1 Structural Bolts, A193/A193M Gr.B7/B7M Heavy Hex Bolts, ASTM A307 Hex Bolt, DIN912 Socket Head Cap Screws, DIN6914 Structural Bolts, EN14399-3/EN14399-4 Heavy Hex Bolts, DIN931/933 Hex Bolts, DIN960/961 Hex Bolts, ISO4014/4017 Hex Bolts, DIN6921 Flange Bolts
ASTM A194/A194M Gr. 2H/2HM, 7/7M Heavy Hex Nuts, A563/A563M Gr. C/DH/10S Heavy Hex Nuts, DIN6915 Structural Nuts, EN14399-3/EN14399-4 Heavy Hex Nuts, DIN934 Hex Nuts, ISO4032 Hex Nuts, DIN6923 Flange Nuts
ASTM A193/A193M Gr. B7/B7M, B16, B8/B8M, ASTM A320 Gr.L7/L7M Threaded Rod/Stud Bolts, DIN975 Threaded Rods
ASTM F436 Hardened Flat Washer, SAE/USS Flat Washer, ISO7089 Round Flat Washer, DIN125 Flat Washers, DIN6916 Structural Washer, EN14399-5/EN14399-6 Flat Washer, DIN127 Spring Washer, F959 DTI Washer
Harnessing a meticulously structured system, Ningbo Beilun Milfast Metalworks Co., Ltd. upholds rigorous control over every phase of production, ensuring that our high-caliber products consistently meet top-tier standards. From the selection of raw materials through the intricacies of the manufacturing process, we adhere to stringent management protocols that guarantee exceptional product quality. This dedication to excellence has earned us remarkable customer satisfaction and loyalty.

The primary offerings from Milfast Metalworks include: ASTM A193-B7, renowned for its reliability and strength. Threaded Rods, A194 Gr. 2H, designed for robustness and durability. Heavy Hex Nuts, ASTM A325 Structural Bolts, and ASTM F436M Hardened Flat Washers. Our products have gained a significant presence across the globe, reaching markets in America, Europe, the Middle East, Africa, and beyond.