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Set Screws

Set screws can mean one of two different things: either a grub screw or a fully threaded hex bolt.

Grub Screws or Socket Set Screws are headless screws used in many applications where a nut is not required to secure the connection, and the grub screw itself provides the union. Commonly used in door locking mechanisms or handles where a protruding head would cause interference. Known in the USA as Blind Screws, they are secured using a Hex or Allen key or sometimes a slotted screwdriver. Available with points including Cup Point, Cone Point, Flat Point and Dog Point.

Fully threaded hex bolts or set screws are typically employed with a threaded hole rather than a nut, and are one of the most popularly employed fastener types in the world.

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.
A4-80
A4-80 Stainless Steel - Identical corrosion resistance to A4-70 but with a higher tensile strength equivalent to that of 8.8 high tensile steel.
BRASS
Brass - Offers an attractive, corrosion resistant finish.
BZP
Bright Zinc Plated (BZP) Steel - Non-stainless standard steel grade offering a basic level of corrosion resistance.
BZP-10.9
Bright Zinc Plated (BZP) Class 10 High Tensile Steel - A high strength non-stainless grade for screws and bolts, with a basic level of corrosion resistance.
BZP-8.8
Bright Zinc Plated (BZP) Class 8 High Tensile Steel - The general purpose high tensile grade for screws and bolts, with a basic level of corrosion resistance.
BZP-G5
Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel - Equivalent to ISO class 8, a general purpose high tensile grade with a basic level of corrosion resistance.
Duplex
Duplex Stainless Steel 1.4462 - A type of stainless steel which has greater corrosion resistance than A4 / 316 and a high tensile strength of minimum 700 N/mm2. Also known as 318LN.
MZP
Mechanically Plated Zinc Steel - Mechanically applied zinc plating, useful to help prevent hydrogen embrittlement.
Nylon
Plastic (Nylon Polyamide) - A tough lightweight plastic, strong at low temperatures, with excellent resistance to chemicals, and features favourable sliding friction behaviour.
ZnFlk-10.9
Organic Zinc Flake Coated Class 10 High Tensile Steel - A higher tensile non-stainless grade for screws and bolts. Coated with superior mechanically applied zinc with corrosion resistance lasting 480 hours in the salt spray test.

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