Bolt, nut & stud protection

Durable protection caps for industrial bolted connections.

BoltRex™ caps protect bolts, nuts and studs against corrosion, moisture penetration, contamination, vandalism and accidental contact. Standard sizes are available, and special versions can be made to order.

BoltRex protection caps in multiple sizes
Available in standard types, telescopic versions and special designs.

Reliable protection in any size, quantity and colour

BoltRex™ caps are designed to seal off exposed bolted connections and prevent capillary moisture penetration. They provide a clean professional finish and help keep bolts, nuts and studs preserved for long-term use in demanding environments.

Download standard sizes PDF

Product range

Standard types and made-to-order solutions

BoltRex™ RS standard protection cap

Type SW-R

Standard cap for protecting bolts, nuts and studs. Also available with washer protection for DIN/ISO washers.

BoltRex RT telescopic protection cap

Type SW-T

Telescopic cap design for applications where extra stud length must be covered cleanly and securely.

BoltRex cap series

Specials

Custom dimensions, colours and special designs for unusual nuts, washers, stud lengths or project-specific requirements.

Applications

Built for harsh industrial environments

BoltRex® is commonly used in offshore and onshore installations, chemical plants, infrastructure projects, steel structures, machinery and other locations where exposed fasteners need long-term protection.

  • Anti-corrosion protection
  • Protection against contamination and moisture
  • Personal protection against exposed sharp threads
  • Anti-vandalism and professional finishing
  • UV-stabilised material for long outdoor use

Sizes & colours

From small fasteners to heavy-duty connections

Standard sizes range from M4 / UNC 1/4” up to M90 / UNC 3 1/4”. Other dimensions can be produced on request. Standard colour is black, but RAL colours are available for projects where colour coding or a specific finish is required.

M4 – M90 Standard size range
RAL Colours on request

Supplier

Supplied worldwide by Juisma® Special Parts

For pricing, technical questions or custom protection caps, contact Juisma® Special Parts or order directly through the webshop.