A307 Hex Bolt
ASTM A307 Hex Bolts are designed for general industrial fastening applications where dependable performance and consistent quality are essential. These low carbon steel hex bolts are widely used in construction, equipment installation, maintenance, and general manufacturing applications across various industries in the United States. Manufactured according to ASTM A307 requirements, they provide a practical and economical fastening solution for applications that do not require high-strength structural bolts.
For industrial buyers, selecting a reliable fastener supplier is critical to maintaining production schedules and project timelines. We supply ASTM A307 Hex Bolts in a wide range of sizes, thread configurations, and surface finishes to meet different application requirements. With strict quality control, accurate production processes, and flexible supply capabilities, we help customers reduce sourcing risks and ensure stable fastener supply for ongoing projects.
Specification:
ASTM A307 Hex Bolts are specified under ASTM A307, which defines the requirements for carbon steel bolts used in general-purpose fastening applications. The specification covers mechanical requirements, material characteristics, dimensional requirements, and testing procedures to ensure consistent quality and reliability.
Available options include different bolt diameters, lengths, thread types, and surface finishes to meet various project requirements. ASTM A307 Hex Bolts can be supplied with UNC or UNF, including plain finish, zinc plated, and hot dip galvanized coatings based on application needs. Inspection is performed according to customer requirements to verify dimensions, threads, and overall product conformity.
| Product name | A307 Hex Bolts |
|---|---|
| Bolt Type： | Hex Head Bolt |
| Grade: | GradeA/GradeB |
| Material: | Carbon Steel |
| Thread Type: | UNC/UNF |
| Size: | 1/4"-4" |
| Dimension Standard: | ASME/ANSI B18.2.1 |
| Tension Strength: | Grade A: 60ksi (min) Grade B: 60-100ksi (min) |
| Surface treatment | Plain,Zinc Plated,Hot Dip Galvanized |
A307 Hex Bolt Dimensions:
The dimension chart of ASTM A307 Hex Bolts provides detailed information on standard bolt sizes, including nominal diameter, bolt length, thread specifications, head dimensions, and other critical measurements. Accurate dimensional data helps engineers, distributors, and purchasing teams select the correct fasteners for their specific applications and ensure proper fit and assembly.
Our ASTM A307 Hex Bolts are available in a wide range of sizes to meet different industrial and construction requirements. The following dimension chart is provided as a reference for common specifications, while customized dimensions, thread requirements, and special configurations can also be supplied according to customer drawings or project requirements.
| Mon | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | 1-5/8 | 1-3/4 | 1-7/8 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 |
| P | 20|28|32 | 18|24|32 | 16|24|32 | 14|20|28 | 13|20|28 | 12|18|24 | 11|18|24 | 10|16|20 | 9|14|20 | 8|12|20 | 7|12|18 | 7|12|18 | 6|12|18 | 6|12|18 | 12|18 | 5|8|12 | 6 | 4.5 | 4.5 | 4 | 4 | 4 |
| ds max | 0.25 | 0.3125 | 0.375 | 0.4375 | 0.5 | 0.5625 | 0.625 | 0.75 | 0.875 | 1 | 1.125 | 1.25 | 1.375 | 1.5 | 1.625 | 1.75 | 1.875 | 2 | 2.25 | 2.5 | 2.75 | 3 |
| ds min | 0.245 | 0.3065 | 0.369 | 0.4305 | 0.493 | 0.5545 | 0.617 | 0.741 | 0.866 | 0.99 | 1.114 | 1.239 | 1.363 | 1.488 | 1.613 | 1.738 | 1.863 | 1.988 | 2.238 | 2.488 | 2.738 | 2.988 |
| s max | 0.438 | 0.5 | 0.562 | 0.625 | 0.75 | 0.812 | 0.938 | 1.125 | 1.312 | 1.5 | 1.688 | 1.875 | 2.062 | 2.25 | 2.438 | 2.625 | 2.812 | 3 | 3.375 | 3.75 | 4.125 | 4.5 |
| s min | 0.428 | 0.489 | 0.551 | 0.612 | 0.736 | 0.798 | 0.922 | 1.1 | 1.285 | 1.469 | 1.631 | 1.812 | 1.994 | 2.175 | 2.356 | 2.538 | 2.719 | 2.9 | 3.262 | 3.625 | 3.988 | 4.35 |
| e max | 0.505 | 0.577 | 0.65 | 0.722 | 0.866 | 0.938 | 1.083 | 1.299 | 1.516 | 1.732 | 1.949 | 2.165 | 2.382 | 2.598 | 2.815 | 3.031 | 3.248 | 3.464 | 3.897 | 4.33 | 4.763 | 5.196 |
| e min | 0.488 | 0.557 | 0.628 | 0.698 | 0.84 | 0.91 | 1.051 | 1.254 | 1.465 | 1.675 | 1.859 | 2.066 | 2.273 | 2.48 | 2.686 | 2.893 | 3.099 | 3.306 | 3.719 | 4.133 | 4.546 | 4.959 |
| k max | 0.163 | 0.211 | 0.243 | 0.291 | 0.323 | 0.371 | 0.403 | 0.483 | 0.563 | 0.627 | 0.718 | 0.813 | 0.878 | 0.974 | 1.038 | 1.134 | 1.198 | 1.263 | 1.423 | 1.583 | 1.744 | 1.935 |
| k min | 0.15 | 0.195 | 0.226 | 0.272 | 0.302 | 0.348 | 0.378 | 0.455 | 0.531 | 0.591 | 0.658 | 0.749 | 0.81 | 0.902 | 0.962 | 1.054 | 1.114 | 1.175 | 1.327 | 1.479 | 1.632 | 1.815 |
- RELATED BOLTS LISTS:
- HEX BOLTS
- HEAVY HEX BOLTS
- DIN931 HEX BOLTS
- AS1252 HEX BOLTS
- DIN6914 HEX BOLTS
- ASME B 18.2.1 HEX BOLTS
- A325 HEAVY HEX BOLTS
- A394 HEX BOLTS
- ASTM A354 HEX BOLTS
- A490 HEAVY HEX BOLTS
- RELATED NUTS LIST:
- HEX NUTS
- HEAVY HEX NUTS
- ISO4032 HEX NUTS
- DIN934 HEX NUTS
- A194 HEAVY HEX NUTS
- A563 HEAVY HEX NUTS
- THREADED ROD LIST:
- DIN975 THREADED RODS
- A193 B7 STUD BOLTS
Application:
ASTM A307 Hex Bolts are widely used in general industrial and commercial applications where reliable fastening performance and economical solutions are required. These carbon steel hex bolts are commonly selected for projects that involve equipment assembly, maintenance work, structural components, and non-critical fastening connections where high-strength bolts are not required.
Common applications of ASTM A307 Hex Bolts include construction projects, steel structures, machinery installation, agricultural equipment, electrical equipment, transportation facilities, and general manufacturing applications. Their standardized dimensions, availability in various sizes, and compatibility with common fastening systems make them a practical choice for distributors, contractors, and industrial users requiring dependable fastener solutions.
Quality Control:
Quality control is an essential part of our ASTM A307 Hex Bolts production process. Incoming raw materials are inspected before production, while dimensional checks, thread inspections, and visual examinations are performed throughout the manufacturing process to ensure each batch meets customer requirements.
Before shipment, finished ASTM A307 Hex Bolts are inspected for appearance, dimensions, surface finish, and overall conformity. Inspection records and quality documents can be provided according to customer requirements, helping distributors, contractors, and industrial users maintain reliable supply and consistent fastening performance.