6. What to Look for in a High-Quality Manufacturer Catalogue
The distance across the inside open gap of the hook. 2. Standard J-Bolt Dimension Chart (Imperial & Metric)
| Dimension | Description | Example Values | | :--- | :--- | :--- | | | The thickness of the bolt's shaft, determining its load-bearing capacity and compatibility with nuts and washers. | 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 1″, 1-1/4″ | | Length (L) | The total length of the bolt's shaft, influencing the embedment depth and pull-out resistance. | 6″, 8″, 12″, 18″, 24″, 30″, 36″+ | | Hook Width (C) | The internal width of the J-shaped hook, affecting how it engages with rebar or other reinforcement within the concrete. | 1″, 2″, 3″, 6″, 12″ | | Hook Length (A) | The length of the curved hook portion from the bend to the tip, also contributing to the anchor's grip within the concrete. | 1″, 1-1/4″, 4″, 5″, 6″ | | Thread Length (T) | The length of the threaded section, which determines how much of the bolt is available for attaching nuts and washers. | 1-1/2″, 3/4″, 6″, 12″ |
Note: For metric catalogues, sizes will be listed as M10, M12, M16, M20, etc., with pitches conforming to DIN or ISO standards. 5. Key Factors for J-Bolt Selection j-bolt catalogue pdf
Looking for a J‑Bolt catalogue PDF? Many manufacturers and suppliers provide downloadable PDF catalogues with specifications, dimensions, load ratings, materials, finishes, and installation notes for J‑bolts used in construction and anchoring. Below is a concise blog post you can use.
When you download our latest edition, you will find detailed sections on:
J-bolts are specialized, hook-shaped fasteners used for anchoring structural elements to concrete foundations, with typical specifications covering diameters, lengths, and ASTM material grades Standard J-Bolt Dimension Chart (Imperial & Metric) |
The following tables represent the standard industrial specifications found in major manufacturing catalogs. These follow ASME B18.31.5 (for bent bolts) and ASTM specifications. Imperial Dimensions (Inches) Nominal Diameter (D) Standard Lengths (L) Hook Length (H) Standard Thread (T) Min. Bend Radius (R) 1/2" - 13 5/8" - 11 3/4" - 10 10" to 30" 7/8" - 9 12" to 36" 1" - 8 12" to 48" 1-1/4" - 7 18" to 60" Metric Dimensions (Millimeters) Nominal Diameter (D) Standard Lengths (L) Hook Length (H) Standard Thread (T) Min. Bend Radius (R) M10 x 1.5 150mm - 300mm M12 x 1.75 200mm - 450mm M16 x 2.0 250mm - 600mm M20 x 2.5 300mm - 750mm M24 x 3.0 400mm - 900mm 3. Material Grades and Mechanical Properties
High-quality catalogues will specify the steel grade, typically ASTM A307 (Carbon Steel) or A193 B7 (Alloy Steel for high-temperature/high-pressure). The catalogue provides the tensile strength (psi) and yield strength. For example, a typical entry might list the allowable shear load in pounds (lbs) based on a safety factor of 4.0.
| Common Specification | Explanation & Common Options | | :--- | :--- | | | "J-Bolt" or "J-Type Anchor Bolt" | | Thread Size (Diameter) | Ranges from M6 to M100 in metric sizes, or 1/4" to 4" in imperial sizes. Common sizes are 3/8", 1/2", 5/8", M12, M20, etc. | | Overall Length (L) | Typical lengths span from 40mm to 2000mm (or 3" to 80+ inches). It can vary significantly based on application needs. | | Hook Width (C) / Inside Hook Diameter | The width of the 'J' curve. A rule of thumb is that the minimum opening of the 'J' is at least twice the rod's diameter. | | Hook Length (A) | The length of the straight section after the bend at the bottom of the 'J'. | | Thread Length (T) | Length of the threaded portion (can be partial or full thread). | | Material / Grade | Common Grades: • Carbon Steel: Grades 4.6, 4.8, 8.8, 10.9 (e.g., A193 Gr. B7) • Stainless Steel: Grades 304, 316 (A2, A4) • High-Strength: F1554 Grades 36, 55, 105 | | Surface Finish / Coating | • Zinc Plated (Electro-galvanized) • Hot-Dip Galvanized (HDG) • Black Oxide / Plain Finish (Black) | | 1″, 2″, 3″, 6″, 12″ | |
A J-bolt is a specialized anchor bolt featuring a semi-circular bend at its unthreaded end, resembling the letter "J." This specific geometry allows the bolt to hook around rebar or embed securely within poured concrete. Unlike straight anchor bolts, the physical hook creates a mechanical interlock that prevents the bolt from pulling out under heavy tensile loads. 2. Key Dimensions in a J-Bolt Catalogue
Before reviewing dimensions, you must understand the four key measurements that define a J-bolt. Industrial catalogs use these standard abbreviations:
Excellent corrosion resistance for standard outdoor environments.
Used primarily in corrosive environments, wastewater treatment plants, marine infrastructure, and chemical processing facilities.