System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Thread Pitch Thread Pitch |
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Drive Style Drive Style |
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Tip Type Tip Type |
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![]() | Flat |
Threading Threading |
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![]() | Fully Threaded |
Thread Spacing Thread Spacing |
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Material Material |
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Thread Type Thread Type |
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Thread Direction Thread Direction |
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Rounded Head Style Rounded Head Style |
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![]() | Cheese |
Hardness Hardness |
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Flat Head Profile Flat Head Profile |
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![]() | Standard |
Specifications Met Specifications Met |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Thread Fit Thread Fit |
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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.