18-8 Stainless Steel Pan Head Screws with Spring Lock Washer
M3 x 0.5 mm Thread Size, 8 mm Long
Locking Type | Lock Washer |
Thread | |
Size | M3 |
Pitch | 0.5 mm |
Direction | Right Hand |
Spacing | Coarse |
Type | Metric |
Fit | Metric Class 6g |
Tip Type | Flat |
Fastener Head Type | Rounded |
Head | |
Style | Pan |
Profile | Standard |
Height | 2.4 mm |
Diameter | 5.6 mm |
Drive | |
Style | Phillips |
Size | No. 1 |
Washer | |
Type | Domed |
Material | 410 Stainless Steel |
OD | 7.80 mm |
Thickness | 0.63 mm |
Lock Washer Type | Spring |
Material | 18-8 Stainless Steel |
Length | 8 mm |
Threading | Fully Threaded |
Tensile Strength | 70,000 psi |
Specifications Met | ASME B18.13 |
Hardness | Rockwell B80 |
Passivation | Passivated |
Performance | Corrosion Resistant, Vibration Resistant |
System of Measurement | Metric |
Country of Origin | United States |
DFARS Compliance | Not Specialty Metals Compliant |
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 | 731815.9000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
These corrosion-resistant screws grip tighter for better vibration resistance than screws with tooth-lock washers. The spring-like washer flexes to keep tension constant and to compensate for uneven surfaces, vibration changes, and temperature shifts. They have a moderate height and width profile, offering a middle ground between narrower button heads and wider truss heads. The Phillips drive easily aligns with drivers and withstands more torque than slotted drives, but drivers slip when you apply too much force. Also known as Square Cone Sems screws.
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 can.
The information in this 3-D model is provided for reference only.