Description

APL – Allen Bolt CSK – M4x30 mm – Stainless Steel | Countersunk Head Hex Socket Screw for Precision Fastening

The APL Allen Bolt CSK – M4x30 mm – SS is a high-performance countersunk head hex socket screw, designed for precision fastening applications where flush surface installation, strength, and corrosion resistance are essential. Manufactured from high-grade stainless steel, this M4 x 30 mm Allen bolt is ideal for mechanical assemblies, industrial machinery, electronics enclosures, furniture, and architectural fittings.

As part of APL’s premium range of industrial fasteners, this bolt combines engineering precision, aesthetic appeal, and long-lasting performance for both indoor and outdoor use. It is designed to meet the stringent quality standards required across various industries.

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What Is a CSK Allen Bolt?

A CSK (Countersunk) Allen bolt is a machine screw with a conical head that sits flush with or below the surface of the material once installed. The hex socket drive allows for secure torque application using an Allen key (hex wrench), offering better control and reduced risk of slippage compared to Phillips or slotted heads.

This design is perfect for applications requiring a clean, flat finish, such as furniture, precision assemblies, and visible surfaces where protruding bolt heads are undesirable.

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Material: Stainless Steel (SS)

The bolt is made from corrosion-resistant stainless steel, which provides excellent mechanical strength and resistance to:

• Moisture

• Chemicals

• Humid or marine environments

• Daily wear and oxidation

This makes it ideal for both indoor and outdoor applications, including areas with exposure to rain, chemicals, or fluctuating temperatures.

Stainless steel also ensures a longer lifespan and reduced maintenance compared to mild steel or coated alternatives.

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Dimensions and Technical Details

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Key Features:

• Flush Fit Design: Countersunk head ensures a smooth, flat finish once installed, ideal for tight or aesthetic assemblies.

• Allen Socket Drive: Allows for strong, slip-free tightening using a hex key; ideal for space-restricted or torque-critical applications.

• Full Metric Threading: Offers a secure grip across the entire shank, improving load distribution.

• High-Quality Stainless Steel: Provides excellent corrosion resistance, strength, and longevity in harsh environments.

• Precision Machined: Manufactured to exact tolerances for consistent, reliable fastening performance.

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Applications:

• Mechanical & Industrial: Machinery frames, precision assemblies, vibration-resistant joints

• Electronics & Enclosures: PCB mounting, server racks, panel fastening

• Furniture: Cabinets, handles, and modern flat-pack furniture

• Automotive & Engineering: Trim fixing, dashboards, and under-hood installations

• Construction & Interior Design: Fixtures, stainless steel hardware, architectural metalwork

Whether you’re working on a structural project, assembling parts in manufacturing, or securing components in high-moisture zones, this M4x30 countersunk Allen bolt delivers optimal performance.

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Installation Tips:

• Use an appropriately sized hex key or Allen wrench (usually 3 mm for M4) for safe and effective tightening.

• For flush installation, drill a countersunk hole that matches the head profile.

• Ensure threads are clean and debris-free before fastening to avoid cross-threading or jamming.

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Why Choose APL Fasteners?

APL (Accurate Products Ltd) is a trusted name in precision fasteners, known for their commitment to quality, durability, and manufacturing excellence. Every fastener is produced using top-grade materials, advanced CNC machines, and rigorous quality checks—ensuring consistent performance and customer satisfaction.

APL fasteners are widely used by OEMs, builders, technicians, and DIY professionals who demand reliability and repeatable results.

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Pack Options and Availability:

• Typically available in packs of 10, 25, 50, or 100 pieces

• Bulk orders for industrial use available on request

• Custom packaging and shipping options for project or resale use

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Upgrade your fastening solution with the APL Allen Bolt CSK M4x30 mm – durable, sleek, and engineered to perform in demanding conditions.

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