Versatile Thread Adapter for Pg21 to 3/4" NPT Connections by ITC RBPG21-3/4M

Stock 1

Thread Adapter · PG21 Male to 3/4 in NPT Female - Metal Body - ITC Electrical RBPG21-3/4M

SKU: ITC-RBPG21-3/4M

Metal thread adapter for converting PG21 male threads to 3/4 in NPT female threads on cable gland and enclosure entries. Commonly used where European PG-thread components need to mate with North American NPT openings in control panels, junction boxes, and equipment housings.

What this product is for

This thread adapter connects a PG21 male thread to a 3/4 in NPT female thread so installers can transition between PG-thread cable entry components and North American NPT-threaded openings or fittings.

Use for

Use for panel builders, OEM equipment, junction boxes, control cabinets, and cable gland installations where a PG21 threaded component must mate with a 3/4 in NPT connection. This type of adapter is commonly selected for mixed-standard equipment and retrofit work.

Avoid for

Avoid using this adapter where the mating thread standard is uncertain, or where a sealing washer, O-ring, or enclosure rating requirement has not been confirmed. Do not assume PG, metric, NPT, and NPS threads are interchangeable.

Best for

Best for electricians and control-panel shops that need a straightforward PG21 to 3/4 in NPT transition without changing the connected gland or enclosure entry size.

Installed in

Typically installed in industrial enclosures, machine panels, disconnects, terminal boxes, and commercial control assemblies. A 3/4 in trade size is commonly used where larger cable entries or conduit-related accessories are required.

Why this product exists

Many imported components use PG threads, while Canadian and U.S. installations often standardize around NPT. This adapter helps bridge those thread systems so existing equipment can be connected without reworking the enclosure opening.

Compared with similar products

Choose this adapter when you need PG21 male on the outside and 3/4 in NPT female on the inside. Similar adapters are available in other PG and NPT combinations, so the thread direction and gender should be checked before ordering. Typical catalogue data for this size across comparable manufacturers shows about 7 mm thread length and about 30 mm hex size, but actual dimensions should be confirmed for the exact ITC part. Actual fit and sealing depend on mating components and installation conditions.

Specifications

Product type: Thread adapter
Thread conversion: PG21 male to 3/4 in NPT female
Part number: RBPG21-3/4M
Brand: ITC Electrical Components
Category: Thread Adapters
Construction: Metal body
Typical application: Cable gland, enclosure, and control-panel thread adaptation
Typical comparable dimensions for this size: approximately 7 mm (0.28 in) thread length and 30 mm (1.18 in) wrench hex across flats; verify exact ITC dimensions before final fit-critical use

- SKU
  ITC-RBPG21-3/4M
- Manufacturer Part #
  RBPG21-3/4M
Application
Cable gland, enclosure, and control-panel thread adaptation
Thread Conversion
PG21 male to 3/4 in NPT female
Construction
Metal body
Category
Thread Adapters
Brands
ITC Electrical Components
Stock in Elmira
1

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