Home / Stainless Steel Countersunk Screws UNF

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Stainless Steel Countersunk Screws UNF

Countersunk screws will sit flush or slightly below the surface, within a recessed hole when correctly installed. Though the tensile strength of countersunk bolts won't be as great as hex head bolts or cap screws, they allow for the heads of the screws to be hidden and other surfaces or components to place directly against the fixing point when necessary.

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Fastener Material Key
A2	A2 Stainless Steel- Also known as grade 304 or 18/8. A general purpose grade of stainless steel.
A4	A4 Stainless Steel - Also known as grade 316 or 18/8/3. A higher corrosion resistant, marine grade of stainless steel.
BZP	Bright Zinc Plated (BZP) Steel - Non-stainless standard steel grade offering a basic level of corrosion resistance.

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UNF Socket Head Countersunk Screws ASME B18. 3-2003 in A2 Stainless Steel

image chamfer for UNF Socket Head Countersunk Screws ASME B18. 3-2003

UNF Socket Head Countersunk Screws ASME B18. 3-2003 in A2 Stainless Steel

A countersunk headed screw conforming with ASME/ANSI B18.3, requiring a hex key (otherwise known as an Allen key) to fit. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank.

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UNF Phillips Csk Machine Screws ASME B18.6.3 in A2 Stainless Steel

image chamfer for UNF Phillips Csk Machine Screws ASME B18.6.3

UNF Phillips Csk Machine Screws ASME B18.6.3 in A2 Stainless Steel

A popular machine screw with a phillips drive. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. These items are always fully threaded. Conforms to ASME B18. 6.3. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary.

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