Home / Set Screws

Order List Summary

Goods Total

= £

Delivery

VAT @%

= £

Grand Total

= £

Free Delivery

	on UK orders of over £40 nett.
	on EU orders of over £60 nett.

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.

less...

more...

image chamfer for Cup Point Grub Screws ISO 4029 (DIN 916)

Cup Point Grub Screws ISO 4029 (DIN 916) in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a depression called a 'cup' on the opposite end, as to ISO 4029 or DIN 916.

M2.5

image chamfer for Flat Point Grub Screws ISO 4026 / DIN 913

Flat Point Grub Screws ISO 4026 / DIN 913 in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a flat on the opposite end, as to ISO 4026 or DIN 913.

M2.5

image chamfer for Cone Point Grub Screws ISO 4027 / DIN 914

Cone Point Grub Screws ISO 4027 / DIN 914 in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a cone point on the opposite end, as to ISO 4027 or DIN 914.

M2.5

image chamfer for Dog Point Grub Screws ISO 4028 / DIN 915

Dog Point Grub Screws ISO 4028 / DIN 915 in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a square profiled end called a dog point on the opposite end, as to ISO 4028 or DIN 915.

M2.5

image chamfer for UNC Cup Point Grub Screws ASME B18. 3-2002

UNC Cup Point Grub Screws ASME B18. 3-2002 in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a depression called a 'cup' on the opposite end, and conforms to ASME/ANSI B18.3.

BZP

MZP

2-56

3-48

4-40

5-40

6-32

8-32

10-24

5/16

7/16

image chamfer for UNF Cup Point Grub Screws ASME B18.3

UNF Cup Point Grub Screws ASME B18.3 in A2 Stainless Steel

Also known as an Allen set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a depression called a cup on the opposite end, and conforms to ASME/ANSI B18.3.

BZP

0-80

1-72

10-32

5/16

7/16

image chamfer for Hex Head Setscrews DIN 933 (ISO 4017)

Hex Head Setscrews DIN 933 (ISO 4017) in A2 Stainless Steel

Commonly referred to as a setscrew or simply as a bolt. The fully threaded DIN 933 or ISO 4017 should not be confused with its DIN 931 equivalent. A standard spanner or ratchet is typically used to fit this product. Used for decades on all types of assembly throughout the world. As with the DIN 931 hex bolt, the hex drive allows a higher torque to be applied. All parts are to DIN 933 except where shown otherwise. The alternative standard ISO 4017 specifies differences in head dimensions for M10, M12 and M14 thread diameters from DIN 933. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

A4-80

BRASS

BZP-10.9

BZP-8.8

Duplex

Nylon

ZnFlk-10.9

M2.5

image chamfer for Hex Head Setscrews with fine pitch DIN 961

Hex Head Setscrews with fine pitch DIN 961 in A2 Stainless Steel

A metric fine thread version of the common DIN 933 / ISO 4017 hexagon head set screw. Fine pitch variant screws have some distinct advantages over their coarse pitch counterparts. Size for size they are stronger than the coarse thread versions "in tension" as there is a larger stress (contact) area. They also have a larger minor diameter meaning shear is less likely. Fine Pitch set screws have less tendancy to loosen as they have a much smaller thread incline. Fine pitch bolts should be preferred if being used to adjust settings, as they give closer, more precise control. Some downsides of using Fine pitch bolts or screws are they are slower to install, so not ideal where quick fitment and removal are required and they are also more likely to suffer from thread galling (see our reference section).

image chamfer for UNC Hex Head Setscrews ASME B18.2.1

UNC Hex Head Setscrews ASME B18.2.1 in A2 Stainless Steel

Commonly referred to as a setscrew and longer versions are referred to in the United States as a tap bolt. A standard spanner or ratchet is typically used to fit this product. Used for decades on all types of assembly throughout the world. The hex drive allows a higher torque to be applied. Produced to ASME B18.2.1.

BZP-G5

4-40

6-32

8-32

10-24

5/16

7/16

image chamfer for UNF Hex Head Setscrews ASME B18.2.1

UNF Hex Head Setscrews ASME B18.2.1 in A2 Stainless Steel

BZP-G5

10-32

5/16

7/16

Top