JIS B 1178 J Type Anchor Bolts
JIS B 1178 J-Type Anchor Bolts are metric foundation bolts with a J-shaped bent end designed to provide secure anchorage when embedded in concrete foundations. The hooked section helps resist pull-out forces, while the threaded end provides a reliable connection for securing structural steel, base plates, machinery, equipment, and other components to concrete foundations. Manufactured according to the dimensional requirements of JIS B 1178, these J-type anchor bolts are suitable for construction, industrial, and infrastructure applications requiring dependable foundation anchoring.
We manufacture JIS B 1178 J-Type Anchor Bolts in carbon steel, alloy steel, and stainless steel, with options for plain, zinc-plated, and hot-dip galvanized finishes. Standard metric sizes and dimensions can be supplied according to JIS B 1178, while custom diameters, overall lengths, thread lengths, hook dimensions, materials, mechanical grades, and surface treatments are available according to customer drawings and project requirements.
Specification:
| Item | Specification |
|---|---|
| Product Type | JL-Type Anchor Bolts |
| Dimensional Standard | JIS B 1178(J) |
| Thread Type | Metric Coarse |
| Thread Standard | ISO261,ISO965 |
| Thread Tolerance | 6g |
| Size Range | M8-M72 |
| Material | Carbon Steel, Alloy Steel,Stainless Steel |
| Carbon Steel&Alloy Steel Grade | ISO 898-1 Class 4.8,8.8,10.9 |
| Stainless Steel Standard | ISO 3506-1 A2,A4 |
| Surface Finish | Plain,Zinc Plated,Hot Dip Galvanized |
| HDG Standard | ISO10684 |
| Zinc Plating | ISO4042 |
| Inspection | Dimensions,Thread,Mechanical Property,Coating |
Dimension Chart of JIS B 1178 J Type Anchor Bolts:
| Thread Size(d) | M8 | M10 | M12 | M16 | M20 | M24 | M30 | M36 | M42 | M48 | M56 | M64 | M72 | 1-5/8 | 1-3/4 | 1-7/8 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 |
| P(Thread Pitch) | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6 | 1.625 | 1.75 | 1.875 | 2 | 2.25 | 2.5 | 2.75 | 3 |
| b(tolerance+2p) | 31 | 36 | 40 | 50 | 58 | 68 | 80 | 94 | 106 | 120 | 140 | 160 | 180 | 1.613 | 1.738 | 1.863 | 1.988 | 2.238 | 2.488 | 2.738 | 2.988 |
| L1 | 48 | 60 | 72 | 96 | 120 | 144 | 180 | 216 | 252 | 288 | 336 | 384 | 432 | 2.438 | 2.625 | 2.812 | 3 | 3.375 | 3.75 | 4.125 | 4.5 |
| R | 16 | 20 | 24 | 32 | 40 | 48 | 60 | 72 | 84 | 96 | 112 | 128 | 144 | 2.356 | 2.538 | 2.719 | 2.9 | 3.262 | 3.625 | 3.988 | 4.35 |
| x(max) | 3.2 | 3.8 | 4.3 | 5 | 6.3 | 7.5 | 9 | 10 | 11 | 12.5 | 14 | 15 | 15 | 2.815 | 3.031 | 3.248 | 3.464 | 3.897 | 4.33 | 4.763 | 5.196 |
Dimension Chart of JIS B 1178 J Type Anchor Bolts:
JIS B 1178 J-Type Anchor Bolts are designed for securing structural components, machinery, equipment, and steel assemblies to concrete foundations. The J-shaped hook is embedded into the concrete to provide mechanical anchorage, while the threaded end extends above the foundation for fastening base plates, brackets, supports, and other components.
Structural & Construction Applications
J-Type Anchor Bolts are commonly used to secure steel columns, structural frames, base plates, steel supports, handrails, and other components to concrete foundations. Carbon steel anchor bolts are suitable for general construction and structural applications, while hot-dip galvanized J-Type Anchor Bolts provide additional corrosion protection for outdoor foundations, building structures, and other exposed environments.
Machinery & Equipment Foundations
J-Type Anchor Bolts are also used for fixing machinery and industrial equipment to concrete foundations, including pumps, motors, generators, compressors, production equipment, and steel support structures. The embedded hook helps provide reliable anchorage and resistance to pull-out forces, making J-shaped foundation bolts suitable for permanent equipment installations.
Stainless Steel & Corrosive Environments
For applications requiring increased corrosion resistance, stainless steel J-Type Anchor Bolts are available in SUS304 and SUS316 grades. SS304 anchor bolts are suitable for outdoor structures, architectural installations, equipment supports, and general industrial environments where good corrosion resistance is required. SS316 anchor bolts provide improved resistance to chlorides and corrosive environments, making them suitable for coastal and marine structures, chemical-processing equipment, wastewater facilities, and other applications exposed to moisture or aggressive media.