McMaster 91257A640 Zinc Yellow-Chromate Plated Hex Head Screw, Grade 8 Steel, 3/8"-16 Thread, 4" Long, Partially Threaded, Pack of 10
UPC: | Harmonization / Schedule B : 7318.15.9000
Country of Origin: Canada | Shipping Weight: 1.34 lbs
Original price
$63.02
-
Original price
$63.02
Original price
$63.02
$63.02
-
$63.02
Current price
$63.02
Our most popular hex head screws. These have a head with six flat sides to keep wrenches and sockets from slipping and rounding off the drive.
High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.
Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.
| Thread Direction | Right Hand |
| Hex Head Profile | Standard |
| Fastener Head Type | Hex |
| Drive Style | External Hex |
| Fastener Strength Rating | High |
| Material | Zinc-Yellow-Chromate-Plated Steel |
| Thread Size | 3/8"-16 |
| Length | 4" |
| Width | 9/16" |
| Height | 15/64" |
| Threading | Partially Threaded |
| Thread Spacing | Coarse |
| Fastener Strength Grade/Class | SAE Grade 8 |
| Tensile Strength | 150,000 psi |
| Hardness | Rockwell C33 |
| Minimum Thread Length | 1" |
| Performance | High Strength |
| Screw Size Decimal Equivalent | 0.375" |
| Specifications Met | ASME B18.2.1 SAE J429 |
| System of Measurement | Inch |
| Thread Fit | Unified Standard Class 2A |
| Thread Type | UNC |
| Tip Type | Flat |
| Country of Origin | Canada |
| DFARS Compliance | Specialty Metals Compliant (252.225-7009) |
| Export Control Classification Number (ECCN) | EAR99 |
| REACH Compliance | REACH (EC 1907/2006) (01/21/2025, 247 SVHC) Compliant |
| RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
| Schedule B Number | 731815.9000 |
| U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |