China Global Leading Pg Size Chart Manufacturer & Factories

The primary differences lie in thread flank angle, thread pitch, and outer major diameter geometry. DIN 40430 Panzergewinde (PG) utilizes an 80-degree thread flank angle with a shallow thread depth and a pitch measured in threads per inch (ranging from 16 to 20 TPI). In contrast, Metric threads (EN 60423 / EN 62444) use a 60-degree equilateral flank angle and standard millimeter pitch increments (typically 1.5mm pitch across M12 through M63).

Because of this difference, a PG thread cannot be directly mated into a Metric tapped hole without cross-threading and destroying the joint. HOONSUN manufactures precision brass and nylon thread reducers, enlargers, and conversion adapters (e.g., PG16-to-M20, M25-to-PG21) that permit seamless retrofitting while retaining dual IP68 waterproof ratings.

To accurately select a PG gland, first measure the maximum outer diameter (OD) of your cable with a calibrated caliper across multiple points to account for jacket ovality. Consult the HOONSUN PG size chart and select a gland whose clamping range places your measured cable OD in the middle 50% of the range.

For example, if your cable measures 7.2 mm OD, a PG9 gland (clamping range 4.0 – 8.0 mm) is appropriate, but a PG11 gland (5.0 – 10.0 mm) may be preferable if your application involves high ambient thermal expansion. Selecting a gland where the cable diameter is right at the minimum limit can result in inadequate rubber compression, whereas sizing at the absolute maximum can prevent the cap nut from seating properly.

Under IEC 60529, an IP68 rating requires the manufacturer and user to mutually define the specific submersion depth and test duration. At HOONSUN, our dual IP68 certification guarantees continuous submersion at up to 5 bar (equivalent to 50 meters of water pressure) for 72 continuous hours.

However, this rating is only technically valid when three physical installation parameters are maintained: (1) the panel entry hole is sealed with our supplied NBR/EPDM O-ring flat washer, (2) the cable diameter sits strictly within the catalog clamping range, and (3) the cap nut is torqued with a calibrated torque wrench to the exact Newton-meter rating specified on our technical datasheet.

While nickel-plated brass provides exceptional mechanical strength, EMC shielding continuity, and cost efficiency in general machinery, it is susceptible to galvanic attack in high-chloride, acidic, or high-humidity coastal environments once the micro-plating layer is damaged. AISI 304 stainless steel provides baseline corrosion resistance for food and beverage packaging machinery requiring mild detergent washdowns.

For marine offshore wind platforms, chemical processing plants, marine engine rooms, and pharmaceutical CIP (Clean-In-Place) washdown environments, procurement must specify passivated AISI 316L stainless steel. The addition of 2-3% molybdenum in 316L prevents pitting and crevice corrosion in chloride-heavy marine atmospheres.

Applying excessive torque with oversized open-ended wrenches is one of the most common causes of field failure. Overtightening crushes the internal elastomeric sealing ring, causing the rubber to shear, distort, and extrude past the clamping claw slots. This cold-flow deformation leads to rapid loss of seal resilience, creating hidden leak paths for moisture ingress.

Furthermore, severe localized over-compression can crush internal cable conductors, inducing conductor-to-conductor insulation degradation, capacitance changes, or micro-fractures in signal cables. Always utilize calibrated torque drivers following HOONSUN's published installation torque values.

Our explosion-proof cable glands are designed to meet ATEX and IECEx directives for hazardous environments (Zone 1, Zone 2, Zone 21, and Zone 22). Under the flame-proof (Ex d) construction standard, the gland's spigot thread engagement provides a precision flamepath that quenches internal ignition flames before they can escape into surrounding explosive atmospheres.

Under increased safety (Ex e) standards, our glands prevent arcs, sparks, or excessive temperatures from developing via high-grade insulation barriers, robust metal clamp rings for steel wire armored (SWA) or braided cables, and continuous high-integrity earthing locknuts.

Yes. Because we operate an integrated in-house manufacturing plant in Liushi, Yueqing, featuring high-precision multi-axis CNC machines and custom injection molding presses, we regularly produce non-standard thread lengths. While standard PG threads typically have 6.0 mm to 9.0 mm entry spigots, we regularly machine extended threads up to 20.0 mm or 25.0 mm to penetrate heavy cast-iron housings or sandwich panel walls.

Additionally, we supply custom sealing inserts in extreme-temperature silicone (-60°C to +200°C), fluorocarbon FKM (for intense oil, fuel, and chemical exposure), or halogen-free fire-retardant elastomers per OEM specification.

Every commercial export order from HOONSUN is backed by full quality assurance documentation upon request. This includes Certificate of Conformance (CoC), raw material metallurgical spectrometry mill test certificates (EN 10204 3.1), RoHS 3 and REACH compliance declarations, SGS IP68 hydrostatic water pressure test logs, and UL/CE certificate copies.

For custom automotive or critical energy projects, we provide complete Initial Sample Inspection Reports (ISIR) and Production Part Approval Process (PPAP) Level 3 documentation packages.