Locking screw, Hexagonal socket and flange - Riegler K1666

Locking screw, Hexagonal socket and flange. This range covers 9 variants from 0.64 EUR. Select the version you need above.

Available variants

Shared technical data

About Caps and Screw plugs

Locking screws and end caps close off unused ports on manifolds, valve blocks and fittings. That allows a plant to be built with spare ports without leaking at the open bore. Threads run from M5 up to G 2 at working pressures of 20 to 60 bar.

What matters when choosing

• The thread follows the port being closed. Parallel G threads are available from G 1/8 to G 2, plus tapered R threads in R 1/8 and R 1/4 and M5 for small bores.
• The thread standard determines where the joint seals. Parallel threads to DIN EN ISO 228-1 need a seal at the shoulder, tapered threads to ISO 7-1 seal in the thread itself.
• For the seal, NBR covers general service. FDA-compliant FPM is chosen where food contact or higher temperatures are involved.
• Material follows the surroundings. Brass CW614N and electroplated nickel-plated brass CW614N for normal use, stainless steel 1.4571 and 1.4404 for corrosive media and cleaning routines.
• Pressure and temperature limit the choice. Working pressure reaches 60 bar, maximum operating temperature is either 80 °C or 150 °C depending on the version.

Typical applications

• Closing unused outlets on compressed air manifolds and valve terminal base plates
• Blanking off ports on air preparation units and cylinders that will be used later
• Sealing test and measuring ports once a pressure test is finished
• Plugging spare ports on hydraulic and oil line blocks
• Securing ports in cleaning and food areas using the FDA-compliant FPM seal

The NonPlusUltra versions are made from stainless steel 1.4404 and sealed with FDA-compliant FPM, released for compressed air, neutral gases and liquids, oil and grease. The value line series is also part of the group, which holds 253 articles.