Cap nuts Koelner A2 M6, stainless steel, pack of 12

Cap nuts Koelner A2 M6 are stainless steel acorn nuts supplied in a pack of 12. They are formed to fit M6 metric threads and provide a smooth, rounded end that conceals the exposed thread. Made from A2 stainless steel, these nuts offer basic corrosion resistance suitable for many indoor and outdoor applications where a finished appearance and protection against contact with the threaded rod are desired.

Advantages

These Koelner cap nuts combine a protective closed-end design with stainless steel material, reducing the risk of injury from exposed threads and helping prevent moisture and debris from entering the thread. The A2 stainless steel construction ensures durability and moderate corrosion resistance without additional coatings. Supplied as a set of 12, the pack is convenient for small assembly jobs or replacement needs.

Suitable for

• Finishing exposed bolts and threaded rods with M6 metric thread
• Machinery and equipment panels where a protected end is required
• Furniture assemblies requiring a neat visible finish
• Automotive trim and interior fastening where stainless appearance is preferred

Key specifications

• Thread size: M6 metric
• Material: A2 stainless steel (austenitic stainless)
• Finish: natural stainless steel
• Style: closed-end cap (acorn) nut
• Quantity: 12 pieces per pack

How to use

Select a cap nut that matches the M6 thread of the bolt or threaded rod. Hand-start the nut onto the exposed thread to ensure proper alignment, then tighten using an appropriate spanner or socket sized for M6 cap nuts until the nut seats firmly against the mating surface. Avoid over-torquing to prevent thread damage or distortion of the cap shape. For applications exposed to significant loads or vibration, check torque and fastening integrity after installation.

Usage recommendations

For outdoor or coastal exposure, consider regular inspection of the stainless finish and, if necessary, use higher-grade stainless materials for prolonged corrosion resistance. When installing on stainless bolts, use compatible materials to minimise risk of galvanic issues; apply anti-seize compound if disassembly is anticipated.