Grade 5 Steel Square-Neck Carriage Bolt
Medium-Strength, Zinc-Plated, 1/2"-13 Thread Size, 1-1/2" Long





Fastener Strength Grade/Class | SAE Grade 5 |
Thread Size | 1/2"-13 |
Length | 1 1/2" |
Threading | Fully Threaded |
Thread Spacing | Coarse |
Head | |
Diameter | 1.094" |
Height | 0.27" |
Neck | |
Type | Square |
Width | 0.52" |
Length | 0.28" |
Tensile Strength | 120,000 psi |
Specifications Met | ASME B18.5, SAE J429 |
Certificate Form | Digital |
Certificate Type | Material Certificate with Traceable Lot Number |
Fastener Head Type | Rounded |
Material | Zinc-Plated Steel |
Hardness | Rockwell C25 |
Rounded Head Profile | Wide |
Rounded Head Style | Carriage |
Screw Size Decimal Equivalent | 0.5" |
System of Measurement | Inch |
Thread Direction | Right Hand |
Thread Fit | Unified Standard Class 2A |
Thread Type | UNC |
Country of Origin | United States |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (06/25/2025, 250 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731815.2000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Made from Grade 5 steel, these bolts are suitable for fastening most machinery and equipment. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Grade 5 steel bolts are marked with three radial lines. Material meets SAE J429 specifications for quality. Dimensions meet ASME B18.5 specifications. Length is measured from under the head.
Zinc Plated—Zinc-plated steel bolts resist corrosion in wet environments.
The information in this 3-D model is provided for reference only.

























