Shri Aarohi Industries

An Allen cap screw is a high-strength fastener characterized by a cylindrical head with a hexagonal (Allen) socket recessed into the top. It is tightened or loosened using an Allen key (hex key) or hex bit.

Key Features

• Cylindrical head with internal hex drive

• Fully or partially threaded shank

• Manufactured from materials such as alloy steel, stainless steel, or carbon steel

• Available in various finishes (black oxide, zinc plated, plain, etc.)

• Designed for high tensile strength and precise fastening

• SS 304 (A2-70) & SS 316 (A4-70)

Allen cap screws are used when:

• High clamping force is required

• Space is limited, making external wrenching impractical

• A clean, flush, or compact assembly is desired

• Precise torque application is necessary

They are commonly tightened using:

• Manual Allen keys

• Torque wrenches with hex bits

• Power tools with hex sockets

Allen cap screws are widely used across many industries due to their strength and compact design.

• Machinery assembly

• Machine tools and equipment frames

• Gearboxes, motors, and pumps

• Engine components

• Brake systems

• Suspension and transmission assemblies

• Steel structures

• Heavy-duty fixtures

• Industrial supports

• CNC machines

• Robotics

• Electrical enclosures

• High-strength, vibration-resistant assemblies

• Precision-engineered components

• High tensile and shear strength

• Compact head allows use in confined spaces

• Better torque transmission than slotted or Phillips screws

• Reduced risk of slippage during tightening

• Professional and neat appearance

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Allen CSK screws, also known as Countersunk Socket Head Cap Screws, are high-strength fasteners featuring a flat, conical head with an internal hex (Allen) drive. The countersunk head allows the screw to sit flush with or below the surface of the assembled component, providing a clean, smooth, and aerodynamic finish.

These screws are designed according to standards such as DIN 7991 / ISO 10642, ensuring precision, strength, and compatibility with standard tools.

Allen CSK screws are used where:

• A flush surface finish is required

• Space constraints prevent the use of protruding bolt heads

• High clamping force and precision are needed

1. Drill a countersunk hole matching the screw head angle (typically 90°).

2. Insert the Allen CSK screw into the countersunk hole.

3. Tighten using a hex (Allen) key or hex bit to the recommended torque.

Allen CSK screws are widely used across industries due to their strength, compact design, and neat appearance.

• Machinery assemblies

• Gearboxes

• Machine frames

• Tooling and fixtures

• Engine components

• Transmission systems

• Brake assemblies

• Interior and exterior trim where flush mounting is needed

• Control panels

• Enclosures

• Switchgear

• Precision instruments

• Metal structures

• Modular furniture

• Architectural fittings

• Aircraft panels

• Structural components requiring flush surfaces

• Defense equipment

• ✔ Flush mounting for smooth surface finish

• ✔ Internal hex drive allows high torque application

• ✔ Compact head design suitable for limited spaces

• ✔ High tensile strength options available

• ✔ Accurate alignment and secure fastening

• Carbon Steel (Grade 8.8, 10.9, 12.9)

• Stainless Steel (A2-70 & A4-70)

•  

• Black oxide

• Zinc plated (white / yellow)

• Phosphate coated

• Stainless steel natural finish

• Metric sizes: M3 to M16

• Inch sizes also available

A Dome Bolt is a type of fastener with a rounded or dome-shaped head, typically used to secure doors, gates, cabinets, or shutters. The dome design provides a sleek, finished look while preventing the bolt from snagging or catching on clothing or other objects. Dome bolts can be surface-mounted or embedded, depending on design requirements. They are commonly made from stainless steel (SS) to ensure corrosion resistance and durability.

Key Features:

• Dome-shaped head for aesthetic appeal and safety

• Corrosion-resistant stainless steel construction

• Smooth operation for locking/unlocking

• Available in various sizes and lengths

• Suitable for indoor and outdoor use

1. SS 304 (Stainless Steel 304):

• Composition: 18% chromium, 8% nickel

• Corrosion resistance: Good for most indoor applications; moderate outdoor use

• Strength: Good mechanical properties

• Cost: More affordable than SS 316

• Usage: Residential doors, cabinets, lockers, gates (moderate exposure to moisture)

2. SS 316 (Stainless Steel 316):

• Composition: 16% chromium, 10% nickel, 2% molybdenum

• Corrosion resistance: Excellent, especially against saltwater, acidic environments

• Strength: High durability and resistance to pitting and rust

• Cost: Higher than SS 304 due to molybdenum content

• Usage: Marine environments, chemical plants, coastal areas, outdoor gates, or high-humidity areas

1. Doors and Gates: For securing double doors, main gates, or shutters.

2. Cabinets and Lockers: Provides additional security in furniture, industrial storage units.

3. Industrial Equipment: Locks panels or hatches in factories, warehouses, or plants.

4. Marine/Outdoor Use: Especially SS 316 dome bolts are used in boats, docks, or coastal areas to prevent rust.

5. General Security: Can be used wherever a simple bolt mechanism is needed for safety or locking purposes.

Usage Tips:

• Choose SS 304 for general indoor use.

• Choose SS 316 if the bolt will face high humidity, salty air, or chemical exposure.

• Ensure correct bolt length for secure engagement with the frame or door.