McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    Is this page helpful?
    Yes
    No
    Comments
    E-mail address (if you would like a response)

    Stainless Steel Pan Head Screws

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

    Image of Product. Front orientation. Stainless Steel Pan Head Screws, with Internal-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long.
    Technical Drawing of Stainless Steel Pan Head Screws, with Internal-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long.
    Image of Product. Back orientation. Stainless Steel Pan Head Screws, with Internal-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long.
    Image of Product. Side1 orientation. Contains SizingReference. Stainless Steel Pan Head Screws, with Internal-Tooth Washer, M3 x 0.5 mm Thread, 6 mm Long.
    2-D PDF
    00000 per pack of 25
    90317A112
    Delivers tomorrow 7-9 am
    90317A112
    00000 per pack of 25
    Pack of 25
    Delivers tomorrow 7-9 am
    Streamline your design process with our Solidworks Add-In
    Available for Solidworks 2017 or newer.
    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

    410 Stainless Steel

    OD

    6.68 mm

    Thickness

    0.43 mm

    Material

    18-8 Stainless Steel

    Length

    6 mm

    Threading

    Fully Threaded

    Tensile Strength

    70,000 psi

    Specifications Met

    ISO 7045

    Hardness

    Rockwell B70

    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 a washer with sharp internal teeth to keep screws in place during vibration. 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.

    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.