Socket Head Screws or Allan Screws
A High tensile bolt using a socket wrench drive and small cylindrical head
Alloy Steel Grade 10.9, Grade 12.9, Unbrako 12.9, Stainless Steel A2 (304) Stainless Steel A4 (316)
Best applications are where extreme strength and hardness are required. Black oil plain finish are not recommended for exterior use. Unbrako bolts are of superior quality.
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Socket Countersink (csk) Screws
A countersunk bolt with a socket drive.
Alloy Steel Grade 10.9, Grade 12.9, Unbrako bolts grade 12.9, Stainless Steel A2 (304) Stainless Steel A4 (316)
Best applications are where extreme strength and hardness are required. Black oil plain finish are not recommended for exterior use. Unbrako bolts are of superior quality.
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Socket Button Head Screws
A bolt with a low profile head and socket drive. For use where space is limited or Providing a decorative finish.
Alloy Steel Grade 10.9, Grade 12.9, Unbrako bolts grade 12.9, Stainless Steel A2 (304) Stainless Steel A4 (316)
Best applications are where extreme strength and hardness are required. Black oil plain finish are not recommended for exterior use. Unbrako bolts are of superior quality.
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Socket Set Screw or Grub Screw
A headless bolt with a socket (Allen) Drive. Mainly used as a threaded locking Pin for securing assemblies to position.
Grade 14.9, Unbrako, Stainless Steel A2 (304) Stainless Steel A4 (316)
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Pozi (Phillips) Pan Head Machine Screw
A pan head screw protrudes above the surface of the material to be fastened.
Zinc Plated Steel grade 4.6 for moderate protection against rust
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Pozi (Phillips) Countersunk (csk) Head Machine Screw
Flat Head Screws are countersunk into the material for a smooth (flush) surface area.Zinc Plated Steel grade 4.6 for moderate protection against rust
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Slotted Countersunk (csk) Machine Screw
Flat Head Screws are countersunk into the material for a smooth (flush) surface area.Zinc Plated Steel grade 4.6 for moderate protection against rust
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Slotted Pan (round) Head
A pan (round) head screw protrudes above the surface of the material to be fastened.
Zinc Plated Steel grade 4.6 for moderate protection against rust
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Set Screws – Full Threaded Bolts
Set screws are fully threaded Hex Head Bolts.
Zinc Plated Low carbon Steel Grade 8.8
The best for general hardware use where high strength is not required.
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Standard Bolts
A Standard Bolt has a Hex Head and a smooth shoulder area beyond the standard amount of threading. Shorter Lengths are fully threaded.
Steel Grade 8.8
Made from carbon alloy steel, tempered, and can be black oil or zinc plated. Best suited for applications where high tensile strength and hardness are required.
Stainless steel grade A2 (304) and A4 (316) are suitable for exterior applications due to the high corrosion resistance. A4 (316) grade has become the material of choice for most marine applications.
Can be supplied with zinc (chrome effect) plating for a sharp look which will suit a variety of applications where a decorative look is required.
Metric Thread Sizes
Thread Size Thread Pitch
M4 0.7
M5 0.8
M6 1.0
M8 1.25
M8 1.0
M10 1.5
M10 1.25
M12 1.75
M12 1.5
M12 1.25
M14 2.0
M14 1.5
M16 2.0
M16 1.5
