Steel Pan Head Screws
Internal-Tooth Lock Washer, M3 x 0.5mm Thread, 6mm 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 |
Tooth Location | Internal |
Washer | |
Type | Tooth |
Material | Zinc-Plated Steel |
OD | 7.35 mm |
Thickness | 0.45 mm |
Length | 6 mm |
Threading | Fully Threaded |
Tensile Strength | Not Rated |
Specifications Met | ISO 7045 |
Certificate Form | Digital |
Certificate Type | Material Certificate with Traceable Lot Number |
Hardness | Not Rated |
Material | Zinc-Plated Steel |
Performance | Vibration Resistant |
System of Measurement | Metric |
Country of Origin | Taiwan |
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 | 731815.9000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
Sharp internal teeth hold screws in place despite frequent movement and vibration. These screws have a washer with teeth that dig into surfaces to prevent loosening. Unlike external-tooth lock washers, their smooth outside edge provides a finished look and won't snag on surrounding objects. Also known as Sems screws, the washer rotates freely but is permanently attached. These screws 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.
Length is measured from under the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
The information in this 3-D model is provided for reference only.