ASTM F1554 Technical Data
Order Grade 55 All Thread Rod
Order Grade 105 All Thread Rod
This specification covers straight, bent, headed, and headless anchor bolts (also known as anchor rods) made of carbon, medium carbon boron, alloy, or high-strength low alloy steel.
Chemical Requirements
| Grade 36 | Grades 55 and 105 | ||
| Element | Diameters up to 3/4, incl. | Over 7/8 to 4, incl. | All Diameters |
| Carbon, max, % | |||
| Heat | 0.25 | 0.25 | |
| Product | 0.28 | 0.28 | |
| Manganese, % | |||
| Heat | 0.60-0.90 | ||
| Product | 0.54-0.98 | ||
| Phosphorus, max, % | |||
| Heat | 0.04 | 0.04 | 0.04 |
| Product | 0.05 | 0.05 | 0.048† |
| Sulfur, max, % | |||
| Heat | 0.05 | 0.05 | 0.05 |
| Product | 0.06 | 0.06 | 0.058† |
| Copper, min, % | |||
| (when specified) | |||
| Heat | 0.20 | 0.20 | 0.20 |
| Product | 0.18 | 0.18 | 0.18 |
†Editorially corrected in April 2016.
Classification
| Description | |||
| Grade | Tensile Strength, ksi (MPa) | Yield Strength, min, ksi (MPa) | Diameter Range, in. |
| 36 | 58-80 (400-558) | 36 (248) | 1/2 - 4 |
| 55 | 75-95 (517-655) | 55 (380) | 1/2 - 4 |
| 105 | 125-150 (862-1034) | 105 (724) | 1/2 - 3 |
| Class | |||
| 1A | anchor bolts with Class 1A threads | ||
| 2A | anchor bolts with Class 2A threads | ||
Specification for A563 Nut
| Anchor Bolt Grade and Diameter, in. | Plain | Hot-Dip or Mechanical Zinc-coated in | |||
| Grade | Diameter, in. | Grade | Style | Grade | Style |
| 36 | 1/2 - 1 1/2 over 1 1/2 | A | Hex | A | Hex |
| A | Heavy Hex | A | Heavy Hex | ||
| 55 | 1/2 - 1 1/2 over 1 1/2 - 4 | A | Hex | A | Heavy Hex |
| A | Heavy Hex | A | Heavy Hex | ||
| 105 | All | DH | Heavy Hex | DH | Heavy Hex |
Tensile Properties for Bars and Machined Specimens
| Grade | |||
| 36 | 55 | 105 | |
| Tensile strength, ksi | 58-80 | 75-95 | 125-150 |
| Yield strength, min, ksi (0.2 % offset) | 36 | 55 | 105 |
| Elongation in 8 in., min, %A | 20 | 18 | 12 |
| Elongation in 2 in. min, %A | 23 | 21 | 15 |
| Reduction of Area, min, % | 40 | 30 | 45 |
AElongation in 8 in. applies to bars. Elongation in 2 in. applies to machined specimens.
Anchor Bolt with Hook
Anchor Bolt with Hook
h = length of hook
l = length of bolt
t = length of threads (exposed end)
t1 = length of threads (encased end), when required
z = length of zinc coating, min, when partial zinc coating is required
Product Marking
| Grade | Color | |
| 36 | Blue | |
| 55 | Yellow | |
| 55 - Weldable | Yellow (projecting end) & White (encased end) | |
| 105 | Red | |
Permanent Grade Identification
| Grade | Indentification |
| 36 | AB36 |
| 55 | AB55 |
| 105 | AB105 |