M16 x 54mm Black Thread Protection Nut & Washer Cap

M16 x 54mm - Standard Thread Protection Nut and Washer Caps DIN 125 - LDPE - Black | Vital Parts - TPNWC-M16-54-B

Our Standard Thread Protection Nut and Washer Caps are designed to protect exposed threads and fastenings from damage, corrosion, and dirt. Ideal for use across construction, engineering, and infrastructure projects, these caps are a must-have for maintaining safety and prolonging component lifespan.

What are Standard Thread Protection Nut and Washer Caps?

Also known as Nut Caps, Bolt Caps, or Washer Caps, these products are used to cover the exposed ends of bolts, nuts, and threaded fixings. Manufactured from high-quality LDPE (Low-Density Polyethylene), they provide a snug fit over hexagonal nuts or screw heads, especially in applications where washers are not used. The internal ribs and clamping edge work together to create a secure, vibration-resistant connection that prevents loosening, ingress of contaminants, and risk of injury from exposed threads.

Key Features:

• Manufactured to DIN 125 standard
• Made from durable LDPE with excellent resistance to chemicals and seawater
• Clamping edge grips under the chamfer for secure fit
• Internal ribs provide enhanced hold and fit retention
• Available in sizes from M4 to M90
• Continuous operating temperature up to 70°C
• Low electrical conductivity
• Standard black finish, with custom RAL colours available

Key Applications and Industries

Our Thread Protection Caps are widely used across the UK in:

• Construction and infrastructure (scaffolding, bridge works)
• Power generation and distribution equipment
• Agricultural machinery and equipment
• Marine and coastal systems
• Road and transport infrastructure (guardrails, signage)

Technical Specifications

• Material: Low-Density Polyethylene (LDPE)
• Colour: Black (standard); custom colours available
• Temperature Range: -30°C to +70°C (continuous use)
• Thread Sizes: M16
• Nut Across Flats: 24mm
• Inside Height: 54mm
• Outside Diameter: 32.3mm
• Washer Diameter: 30mm
• Washer Thickness: 3mm
• Chemical Resistance: Resistant to seawater, non-oxidising acids, alkaline solutions, oils, fuels, and alcohols

Our Standard Thread Protection Nut and Washer Caps are ideal for:

• Covering exposed nuts and bolt threads to prevent corrosion and wear
• Enhancing safety in high-contact or public areas by covering sharp or protruding fixings
• Improving visual finish and uniformity in industrial and construction settings

Benefits:

• Prevents thread damage and costly rework
• Enhances safety by covering sharp fastener edges
• Protects against rust, dirt, and debris ingress
• Quick and easy installation without tools
• Customisable colours for visibility, safety, or branding

Why Buy from Vital Parts?

As a trusted UK supplier of high-quality fasteners and industrial components, Vital Parts offers a customer-first experience with benefits that include:

• Same-Day Dispatch: Fast and reliable shipping to keep your projects on track.
• Competitive Trade Pricing: Enjoy bulk discounts on larger orders to save more.
• Expert Technical Support: Our knowledgeable team is here to help with product selection and application advice.

If you need assistance selecting the right size or would like to discuss custom options, contact our expert team at 01233 713581.