Stainless Steel Flange Bolts - Westfield Fasteners Ltd

Fastener Material Key
A2	A2 Stainless Steel - Also known as grade 304 or 18/8. A general purpose grade of stainless steel.
BO-12.9	Black Oxide High Tensile Steel Class 12.9 - A high tensile non-stainless grade with a black oxide finish offering limited 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.

Hex Head Flange Bolts without Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

image chamfer for Hex Head Flange Bolts without Serrations EN 1665 / DIN 6921

Hex Head Flange Bolts without Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

The DIN 6921 or EN 1665 flange bolt is a hexagon headed bolt or screw incorporating a flange, negating the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hex driven counterparts. Typically used where the flange offers protection for the bolted component and where the driving tool may otherwise scratch its surface. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank. This variant is plain, unserrated under the head.

A2

M5

M6

M8

M10

M12

Hex Head Flange Bolts with Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

image chamfer for Hex Head Flange Bolts with Serrations EN 1665 / DIN 6921

Hex Head Flange Bolts with Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

The DIN 6921 or EN 1665 flange bolt is a hexagon headed bolt or screw incorporating a flange, negating the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hex driven counterparts. Typically used where the flange offers protection for the bolted component and where the driving tool may otherwise scratch its surface. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank. This variant includes serrations under the head.

A2

M5

M6

M8

M10

M12

Socket Head Button Screws With Flange ISO 7380 part 2 in A2 Stainless Steel

Socket Head Button Screws With Flange ISO 7380 part 2 in A2 Stainless Steel

A popular and attractive socket head screw with an integrated flange offering a wider head for bolting softer materials. Typically used where aesthetics are important, or where a lower profile domed finish is required. The hex drive is generally smaller than other hex driven ranges and thus the ultimate tightening torque is reduced. Manufactured to ISO 7380, the same standard as the non flanged variant, and always fully threaded.

A2

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

Torx Button Head Screws With Flange in A2 Stainless Steel

Torx Button Head Screws With Flange in A2 Stainless Steel

A 6 lobe or torx driven variant of the popular flanged socket button screw. Again, torx button flange screws can be employed where aesthetics are important, or where space is limited.

A2

M3

M4

M5

M6

M8

M10

M12

UNC Hex Head Flange Bolts with Serrations in A2 Stainless Steel

image chamfer for UNC Hex Head Flange Bolts with Serrations

UNC Hex Head Flange Bolts with Serrations in A2 Stainless Steel

Hexagon headed bolt with a flange. Also known as a washer bolt. The wider surface area beneath the head spreads the clamping pressure and negates the need for a washer. These UNC hex head flange bolts are serrated. The serrations are anti-rotational and bite into the material which they are connecting to secure the fixing.

A2

1/4

5/16

3/8

1/2