Hex Head Screw with Flat Washer
3/8"-16 Thread Size, 1" Long
Thread Direction | Right Hand |
Hex Head Profile | Standard |
Fastener Head Type | Flanged, Hex |
Drive Style | External Hex |
Material | 18-8 Stainless Steel |
Thread Size | 3/8"-16 |
Length | 1" |
Head | |
Width | 9/16" |
Height | 15/64" |
Washer | |
Type | Flat |
OD | 1.015" |
Thickness | 0.064" |
Threading | Fully Threaded |
Thread Spacing | Coarse |
Tensile Strength | 100,000 psi |
Certificate Form | Digital |
Certificate Type | Material Certificate with Traceable Lot Number |
Hardness | Rockwell B95 |
Performance | Corrosion Resistant |
Screw Size Decimal Equivalent | 0.375" |
System of Measurement | Inch |
Thread Fit | Unified Standard Class 2A |
Thread Type | UNC |
Tip Type | Flat |
Country of Origin | United States |
DFARS Compliance | Not Specialty Metals Compliant |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (02/04/2026, 253 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731815.9000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Protect thin and soft surfaces from damage. Also known as Sems screws, a freely rotating washer sits between the head of these corrosion-resistant screws and your material to distribute pressure evenly. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.
Length is measured from under the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel screws can.
Resist loosening
The information in this 3-D model is provided for reference only.