{"id":4406,"date":"2026-03-16T14:10:28","date_gmt":"2026-03-16T06:10:28","guid":{"rendered":"https:\/\/machinedwasher.com\/?post_type=product&p=4406"},"modified":"2026-03-19T08:56:35","modified_gmt":"2026-03-19T00:56:35","slug":"through-bolts","status":"publish","type":"product","link":"https:\/\/machinedwasher.com\/de_de\/products\/through-bolts\/","title":{"rendered":"Industrial Grade Through Bolts Expansion Wedge Anchor Bolts for Concrete"},"content":{"rendered":"
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What Are Through Bolts?<\/strong><\/h2>\n<\/div>\n<\/div>\n
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Through bolts are a type of mechanical fastener designed to clamp materials together by passing completely through all the layers being joined. They consist of a threaded bolt and a nut that is tightened on the opposite end from the bolt head. Unlike screws which grip into a material, or bolts that thread into a blind hole, through bolts create a strong, reliable connection by compressing the materials between the bolt head and the nut. This design allows for high clamping forces and is commonly used when joining thick materials or when a detachable joint is required.<\/p>\n

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Materials<\/strong><\/h2>\n

Through bolts are manufactured from a variety of materials, each selected for specific strength and environmental properties:<\/p>\n

\u2022\u00a0Carbon Steel:<\/strong>\u00a0The most common and cost-effective material, offering high strength for general construction and industrial use.
\n\u2022\u00a0Stainless Steel:<\/strong>\u00a0Provides excellent corrosion resistance, making it ideal for outdoor, marine, and food processing applications. Common grades include 304 and 316.
\n\u2022\u00a0Alloy Steel:<\/strong>\u00a0Often heat-treated for high-stress applications requiring superior tensile strength, such as in heavy machinery and structural steel connections.
\n\u2022\u00a0Galvanized Steel:<\/strong>\u00a0Carbon steel coated with a layer of zinc for moderate corrosion protection, frequently used in outdoor construction.
\n\u2022\u00a0Brass:<\/strong>\u00a0Offers good corrosion resistance and electrical conductivity, often used in plumbing and electrical applications.<\/p>\n

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Surface Finishes<\/strong><\/h2>\n

The surface finish is applied to enhance durability, corrosion resistance, and sometimes appearance:<\/p>\n

\u2022\u00a0Plain (Black):<\/strong>\u00a0No coating; used in indoor, dry environments.
\n\u2022\u00a0Zinc Plated:<\/strong>\u00a0A common, economical finish that provides a basic level of corrosion resistance for indoor and light outdoor use.
\n\u2022\u00a0Hot-Dip Galvanized:<\/strong>\u00a0A thick, durable zinc coating applied by dipping the bolt into molten zinc. This is standard for heavy outdoor and marine construction.
\n\u2022\u00a0Mechanical Galvanized:<\/strong>\u00a0A zinc coating applied without heat, used to prevent hydrogen embrittlement in high-strength bolts.
\n\u2022\u00a0Passivated:<\/strong>\u00a0A chemical treatment for stainless steel to remove free iron and enhance its natural corrosion-resistant oxide layer.<\/p>\n

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Specifications<\/strong><\/h2>\n

Through bolts are defined by several key specifications:<\/p>\n

\u2022\u00a0Diameter:<\/strong>\u00a0The nominal thickness of the bolt shaft (e.g., 1\/4 inch, 1\/2 inch, M10, M20).
\n\u2022\u00a0Length:<\/strong>\u00a0Measured from under the head to the end of the bolt, chosen to accommodate the thickness of the materials plus the nut and washer.
\n\u2022\u00a0Thread Pitch:<\/strong>\u00a0The distance between threads (coarse or fine), which affects holding power and installation speed.
\n\u2022\u00a0Grade \/ Class:<\/strong>\u00a0Indicates the bolt’s tensile strength (e.g., SAE Grade 2, 5, 8 or ISO Property Class 4.6, 8.8, 10.9).
\n\u2022\u00a0Head Type:<\/strong>\u00a0The shape of the head (e.g., Hex, Square, Socket Cap) which determines the tool needed for installation.<\/p>\n

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Applications<\/strong><\/h2>\n

The versatility of through bolts makes them essential across numerous industries:<\/p>\n

\u2022\u00a0Construction:<\/strong>\u00a0Steel beam connections, securing wooden posts to concrete foundations, and heavy timber framing.
\n\u2022\u00a0Infrastructure:<\/strong>\u00a0Bridge building, highway sign supports, and railway track assembly.
\n\u2022\u00a0Industrial Machinery:<\/strong>\u00a0Assembling heavy equipment, conveyor systems, and motor mounts.
\n\u2022\u00a0Automotive:<\/strong>\u00a0Leaf spring shackles, engine mounts, and chassis components.
\n\u2022\u00a0DIY\/Furniture:<\/strong>\u00a0Assembling flat-pack furniture (with barrel nuts), creating sturdy shelving units, and repairing tools.<\/p>\n

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Excellent Case<\/strong><\/h2>\n

A homeowner needed to hang a heavy 50-pound swing set from a large wooden beam in their backyard. Using lag screws risked splitting the wood, so for safety and durability, they used two 1\/2-inch galvanized through bolts. They drilled holes completely through the beam and bracket, inserted the bolts with large washers, and tightened the nuts. The through bolts created a strong, weather-resistant connection that safely supports the swing’s dynamic load year after year.<\/p>\n

\"\"<\/p>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

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