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A307 Grade A Carriage Bolts
A307 Grade A Carriage Bolts are manufactured from low carbon steel to meet or exceed ASTM A307 Grade A. Material is manufactured with rolled threads. Lengths out to 6 inches will be fully threaded. Lengths over 6 to 12 inches will have 6 inches of thread. Zinc plated material will meet or exceed ASTM F1941. Hot-Dip Galvanized material will meet or exceed ASTM A153. Typical hardness will range from HRB 69-100 and a minimum tensile strength of 60,000 psi is required.
| A307 Grade A Carriage Bolts / Grade 5 Carriage Bolts / Carriage Bolts 18-8 Stainless Steel / A307 Grade A Timber Bolts Hot Dip Galvanized | |||||||||||
| Diameter | Head Diameter | Head Height | Square Width | Square Depth | |||||||
| Bolt Diameter | Max. | Min. | Max. | Min | Max | Min | Max | Min. | Max | Min. | |
| 8 | 0.1640 | 0.173 | 0.157 | 0.328 | 0.298 | 0.102 | 0.083 | 0.169 | 0.155 | 0.108 | 0.078 |
| 10 | 0.1900 | 0.199 | 0.182 | 0.469 | 0.436 | 0.114 | 0.094 | 0.199 | 0.185 | 0.125 | 0.094 |
| 12 | 0.2160 | 0.225 | 0.206 | 0.500 | 0.468 | 0.149 | 0.125 | 0.215 | 0.197 | 0.135 | 0.105 |
| 1/4 | 0.2500 | 0.260 | 0.237 | 0.594 | 0.563 | 0.145 | 0.125 | 0.260 | 0.245 | 0.156 | 0.125 |
| 5/16 | 0.3125 | 0.324 | 0.298 | 0.719 | 0.688 | 0.176 | 0.156 | 0.324 | 0.307 | 0.187 | 0.156 |
| 3/8 | 0.3750 | 0.388 | 0.360 | 0.844 | 0.782 | 0.208 | 0.188 | 0.388 | 0.368 | 0.219 | 0.188 |
| 7/16 | 0.4375 | 0.452 | 0.421 | 0.969 | 0.907 | 0.239 | 0.219 | 0.452 | 0.431 | 0.250 | 0.219 |
| 1/2 | 0.5000 | 0.515 | 0.483 | 1.094 | 1.032 | 0.270 | 0.250 | 0.515 | 0.492 | 0.281 | 0.250 |
| 5/8 | 0.6250 | 0.642 | 0.605 | 1.344 | 1.219 | 0.344 | 0.313 | 0.642 | 0.616 | 0.344 | 0.313 |
| 3/4 | 0.7500 | 0.768 | 0.729 | 1.594 | 1.469 | 0.406 | 0.375 | 0.768 | 0.741 | 0.406 | 0.375 |
Grade 5 Carriage Bolts
Grade 5 Carriage Bolts are manufactured from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications and is manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. Typical hardness on diameters of 1/4 to 1 inch is HRC 25-34. Tensile strength on diameters 1/4 to 1 inch will meet a minimum of 120,000 psi.
Carriage Bolts 18-8 Stainless Steel
18-8 stainless steel carriage bolts are manufactured to meet or exceed ANSI B18.5 and will have a typical composition of 18% chromium and 8% nickel. These percentages exist in 303, 304 and 305 series stainless steels so 18-8 is used at times to designate any and all of those alloy groups. 18-8 stainless steel offers good corrosion resistance and machines easily but will over time stain in coastal environments. They are also acceptable for use in ACQ pressure-treated lumber.
A307 Grade A Timber Bolts Hot Dip Galvanized
All timber bolts, regardless of length will have 6 inches of thread on the shank. Timber bolts are typically used in marine and treated wood applications. Slightly different than carriage bolts, timber bolts have fins on the neck underneath the head to prevent the bolt from turning during installation. The oversize head eliminates the need for a washer.
A307 Grade A Carriage Bolts / Grade 5 Carriage Bolts / Carriage Bolts 18-8 Stainless Steel / A307 Grade A Timber Bolts Hot Dip Galvanized
Types of Bolts | ||||
Carriage Bolts Application Industries
Sunflex Metal Industries are engaged in manufacturing of robust quality of Carriage Bolts. These Carriage Bolts are widely used in the following industries:
Mining Industries Transport Industries- Rail and Road Construction Industries / Building Systems Manufacturing Industries Agriculture Industries Energy Industries Water Industries Automotive Industries Ship Building Industries Nuclear Power Plant Paper & Pulp Industries Sugar Industries Engineering Cement Industries Petro-Chemical Industries Food Industries Oil & Gas Industries Chemical & Pharmaceutical Industries
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