Stainless Steel Pan Head Screws

with External-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long

Technical Drawing of Stainless Steel Pan Head Screws, with External-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long.

Image of Product. Back orientation. Stainless Steel Pan Head Screws, with External-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long.

Image of Product. Side1 orientation. Contains SizingReference. Stainless Steel Pan Head Screws, with External-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long.

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00000 per pack of 25

90317A523

In stock

90317A523

00000 per pack of 25

QuantityPack of 25

In stock

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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	External
Washer
Type	Tooth
Material	410 Stainless Steel
OD	5.69 mm
Thickness	0.45 mm
Length	6 mm
Threading	Fully Threaded
Tensile Strength	70,000 psi
Specifications Met	ASME B18.13.1M
Certificate Form	Digital
Certificate Type	Material Certificate with Traceable Lot Number
Hardness	Rockwell B70
Material	18-8 Stainless Steel
Passivation	Passivated
Performance	Corrosion Resistant, Vibration Resistant
System of Measurement	Metric
Country of Origin	Taiwan
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	No

These corrosion-resistant screws have sharp external teeth that hold better than screws with internal teeth when vibration resistance matters. They’re less likely to come loose during vibration, but the teeth may snag on surrounding objects. Also known as Sems screws, the washer rotates freely but is permanently attached. 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.

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.