Washer Head Penta Bolt

Washer Head Penta Bolts – High-Security Tamper-Resistant Fasteners

Washer head penta bolts are specialized tamper-resistant fasteners designed for high-security applications. Featuring a five-sided (pentagonal) head, these bolts require a unique penta socket tool for removal, making them highly resistant to unauthorized tampering or theft.

Unlike standard hex bolts, washer head penta bolts include an integrated washer-like flange, which provides enhanced load distribution and prevents loosening under vibration. This design makes them ideal for securing polymer concrete vaults, meter boxes, pole top transformers, and other critical infrastructure.

Common Applications of Washer Head Penta Bolts

Due to their increased security and reliability, washer head penta bolts are widely used in:

• Utility Infrastructure – Securing underground enclosures, electrical and gas meter boxes.
• Pole Top Transformers – Preventing unauthorized access to electrical equipment.
• Manholes and Access Covers – Ensuring safety and security in public utility systems.
• Industrial and Municipal Security – Used in enclosures, power stations, and restricted-access locations.
• Heavy-Duty Equipment – Providing vibration resistance in machinery and construction applications.

Material Options & Specifications

Washer head penta bolts are manufactured using high-quality materials for superior durability and corrosion resistance:

• Stainless Steel – Ideal for outdoor, marine, and harsh environments due to its rust resistance.
• Bronze & Brass – Excellent for electrical and water utility applications, offering corrosion resistance.
• Low Carbon Steel – A cost-effective solution for general security applications.

These security fasteners are available with both standard threads and coil threads, ensuring compatibility with different fastening needs.

Available Sizes

To accommodate different security and industrial requirements, washer head penta bolts are offered in the following diameters:

• 3/8" diameter
• 1/2" diameter
• 5/8" diameter

Why Choose Washer Head Penta Bolts?

• Enhanced Security – The unique five-sided head makes these bolts resistant to tampering with standard tools.
• Built-In Washer Design – Provides superior load distribution and prevents loosening due to vibration.
• Corrosion Resistance – Available in materials designed for long-term durability in extreme environments.
• Trusted by Industry Professionals – Used by utility companies, municipalities, and industrial facilities worldwide.

Custom Washer Head Penta Bolts Available

Don't see your item? Don't see your size? We will custom manufacture washer head penta bolts to your exact specifications.