Black-Oxide Steel Hex Nut
Medium-Strength, SAE Grade 5, 1-3/8"-12 Thread Size





Hex Nut Profile | Standard |
Fastener Strength Rating | Medium |
Material | Black-Oxide Steel |
Thread Size | 1 3/8"-12 |
Width | 2 1/16" |
Height | 1 3/16" |
Fastener Strength Grade/Class | SAE Grade 5 |
Specifications Met | ASME B18.2.2 |
Drive Style | External Hex |
Nut Type | Hex |
System of Measurement | Inch |
Thread Direction | Right Hand |
Thread Fit | Unified Standard Class 2B |
Thread Spacing | Fine |
Thread Type | UNF |
Country of Origin | China |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (06/27/2024, 241 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731816.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.
Medium-Strength Steel—These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
The information in this 3-D model is provided for reference only.

























