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Technical Specification
PRODUCT NUMBER AC61RAC61SAC61TAC7706AC7708
Connection Type Quick-Release CouplingQuick-Release CouplingQuick-Release CouplingQuick-Release CouplingQuick-Release Coupling

Q 1. What is the SC21S?

A. The SC21S is the PCL Safeflow Coupling 7.9mm (5/16) i/d Hose Tailpiece. The PCL SC21S is a Safeflow hose tailpiece coupling with an 8 mm (5/16 in) internal diameter, designed to connect compressed-air hose to PCL quick-release couplings in workshop and industrial airline systems.

Q 2. What thread type is it?

A. Hose Tailpiece.

Q 3. Is this a genuine PCL part?

A. Yes — this is a genuine PCL product, supplied under the PCL brand of Pneumatic Components Ltd, Sheffield, UK.

Q 4. What thread size does it use?

A. 8 mm / 5/16 in.

Q 5. Are other versions available?

A. Yes — this product is part of a PCL range with sibling variants in alternative sizes, connections or configurations; see the product variants for options.

Q 6. What are its key characteristics?

A. Manufactured in Sheffield since 1938, the SC21S is part of PCL's HORNGROUP range and is built to the dimensional and quality standards associated with PCL's long-established UK production.

Q 7. Who manufactures it?

A. PCL (Pneumatic Components Ltd), the Sheffield, UK based world leader in tyre inflation and compressed air products, part of HORNGROUP.

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