Description
90403A106 Steel Pan Head Screws
with Internal-Tooth Lock Washer 4-40 Thread 1/4″ Long Lead, Sharp internal teeth dig into surfaces to resist large amounts of vibration, while the smooth outside edge provides a finished look. Also known as Sems screws, the washer rotates freely but is permanently attached
Thread Size: 4-40
Length: 1/4″
Threading: Fully Threaded
Head Diameter: 0.219″
Head Height: 0.080″
Washer:
OD: 0.268″
Thickness: 0.018″
Drive Style: Phillips
Drive Size: No. 1
Material: Zinc-Plated Steel
Hardness: Rockwell B69
Tensile Strength: 60,000 psi
Screw Size Decimal Equivalent: 0.112″
Thread Type: UNC
Thread Spacing: Coarse
Thread Fit: Class 2A
Thread Direction: Right Hand
Head Type: Rounded
Rounded Head Style: Pan
Rounded Head Profile: Standard
Screw Features: With Washer
Locking Type: Lock Washer
Washer Type: Internal-Tooth Lock
Washer Material: Zinc-Plated Steel
System of Measurement: Inch
Specifications Met: ASME B18.13
RoHS: RoHS 3 (2015/863/EU) Compliant
Manufacturer: Electronic Components
MFG Part #: 90403A106
