System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Pitch Thread Pitch |
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Thread Type Thread Type |
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Drive Style Drive Style |
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Threading Threading |
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![]() | Fully Threaded |
Rounded Head Style Rounded Head Style |
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![]() | Cheese |
Specifications Met Specifications Met |
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Material Material |
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Finish Finish |
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Thread Direction Thread Direction |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Tip Type Tip Type |
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![]() | Flat |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Flat Head Profile Flat Head Profile |
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![]() | Standard |
Thread Spacing Thread Spacing |
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Tensile Strength Tensile Strength |
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Thread Fit Thread Fit |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Rounded Head Screws
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About Flat Head Screws
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18-8 Stainless Steel Narrow Cheese Head Slotted Screws

More corrosion resistant than steel, and almost as strong, these 18-8 stainless steel screws have a narrower head than pan head screws to fit into tight spaces. They’re often used in electrical panels and next to flanges and raised surfaces in humid, damp, and washdown environments, but will corrode if exposed to salt water or chemicals. A deep slot gives you more driving power and keeps the screwdriver from slipping. Length is measured from under the head.
Passivated screws are finished with an extra layer of rust protection.
NAS 721 screws meet National Aerospace Standards.
For technical drawings and 3-D models, click on a part number.
Metric 18-8 Stainless Steel Slotted Flat Head Screws

These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
Screws with a 100° countersink angle distribute pressure over a wide area to prevent crushing soft materials.
For technical drawings and 3-D models, click on a part number.