Stainless Steel Extended Gland
The Stainless Steel Extended Thread Cable Gland (also referred to as a long-thread cable connector) features an elongated metric or NPT thread engineered specifically for electrical enclosures, control panels, and junction boxes with thick walls, heavy internal coatings, or thermal insulation layers. Machined from solid 304 or 316 stainless steel, it ensures secure mechanical cable retention, continuous electrical grounding, and a dependable liquid-tight seal in corrosive environments.
Product Overview
The Stainless Steel Extended Thread Cable Gland (also referred to as a long-thread cable connector) features an elongated metric or NPT thread engineered specifically for electrical enclosures, control panels, and junction boxes with thick walls, heavy internal coatings, or thermal insulation layers. Machined from solid 304 or 316 stainless steel, it ensures secure mechanical cable retention, continuous electrical grounding, and a dependable liquid-tight seal in corrosive environments.
Key Features
Material Integrity: CNC-machined from solid stainless steel bar stock (SS304 / SS316), providing high resistance to chemical exposure, salt spray, and physical impact.
Extended Thread Reach: Accommodates enclosure wall thicknesses and internal clearance requirements that exceed standard cable gland limits, eliminating the need for counter-boring.
Sealing Mechanism: Internal clamping claw and NBR/FKM sealing ring distribute uniform radial pressure, securing the cable while maintaining an IP68 ingress rating.
Corrosion Resistance: Built for harsh washdown areas, marine installations, and heavy industrial settings where plated brass or nylon alternatives degrade.
Technical Specifications
|
Parameter |
Specification Details |
|
Thread Standards |
Metric (M12 to M63), NPT (3/8" to 2"), PG, G (PF) |
|
Thread Length |
Extended reach (ranging from 15mm to 35mm depending on size) |
|
Clamping Range |
3mm to 44mm cable outer diameter |
|
Body Material |
Stainless Steel 304 / 316 / 316L |
|
Seal Material |
Standard NBR (Optional: Silicone / FKM for high temperatures) |
|
Claw Material |
Polyamide PA6 (UL94 V-2) or Nickel-plated brass |
|
Ingress Protection |
IP68 (5 bar, 1 hour) / IP69K |
|
Operating Temperature |
-40°C to +100°C (Short-term to +120°C); FKM seals up to +200°C |
Product Options
Material Grades: SS304 for general industrial applications; SS316 / 316L for marine, offshore, and corrosive chemical environments.
Thread Variations: Metric (ISO pitch), NPT (ANSI B1.20.1), and PG threads available across all body sizes.
Sealing Inserts: Multi-hole inserts, flat cable inserts, and blind plugs manufactured upon request.
Hardware Inclusions: Supplied as a complete assembly with matching stainless steel locknuts and pre-installed Neoprene/O-rings.
Applications
Industrial Control Cabinets: Outdoor switchgear, automation panels, and powder-coated or insulated electrical enclosures.
Marine & Offshore: Deck equipment, shipbuilding, and desalination skids exposed to continuous saltwater spray.
Process & Food Industries: Food processing plants, pharmaceutical skids, and chemical packaging lines requiring frequent high-pressure washdowns.
Renewable Energy & Utilities: Solar inverter housings, wind turbine nacelle junction boxes, and water treatment plant control panels.
OEM & ODM Customization
Non-Standard Threads: Custom thread lengths, extra-fine pitches, or specialized imperial thread forms machined via CNC turning centers.
Dimensional Modification: Tailored hex body sizes, flange diameters, or internal bore tolerances to match specific wire harness assemblies.
Material Certification: Traceable mill test certificates (MTC 3.1) and positive material identification (PMI) testing available for critical infrastructure projects.
Laser Marking: Custom part numbers, batch codes, or client logos laser-etched directly onto the gland body.
Quality Control
Machining Accuracy: 100% optical comparator and thread-gauge inspection verify pitch diameter, lead, and tolerance class (6g).
Pressure & Leak Testing: Periodic pneumatic and hydrostatic immersion tests confirm IP68 sealing performance under continuous submersion.
Material Verification: Spectrometer material analysis ensures chemical composition complies with ASTM A276 / EN 10088 standards.
Quality Documentation: RoHS, REACH, CE, and ISO 9001 factory test reports provided with shipment.
Frequently Asked Questions
Q: How do I select the correct extended thread length?
A: Measure the total wall thickness of your enclosure plus any internal clearance needed for locknuts and washers, then select a thread length that exceeds this sum by at least 3mm to 5mm.
Q: What is the difference between SS304 and SS316 variants?
A: SS304 contains 18% chromium and 8% nickel, suitable for standard industrial environments. SS316 adds 2% molybdenum, providing superior resistance to chlorides, marine atmospheres, and acidic washdowns.
Q: Can these glands withstand continuous high-temperature exposure?
A: Standard units with NBR seals operate up to 100°C. For continuous operating temperatures up to 200°C, specify FKM (Viton) seal options.
Q: Are locknuts included with the cable glands?
A: Yes. Each gland ships fully assembled with a matching stainless steel locknut and sealing O-ring.
Q: What is the minimum order quantity (MOQ) for standard sizes?
A: Standard catalog sizes (M16 to M32 in SS304/SS316) are stocked in production quantities with an MOQ of 100 pieces. Non-standard thread lengths require an MOQ of 500 pieces.
Q: What is the standard lead time for bulk orders?
A: In-stock items ship within 3 to 5 business days. Production runs for custom threads or non-standard materials require 15 to 25 business days.
Request a Quote
To receive a formal quotation, please provide the following technical details:
Product Model / Series: (e.g., Stainless Steel Extended Thread Cable Gland, M20)
Material Requirement: (SS304 or SS316)
Thread Specification: (Metric, NPT, or PG size + required thread length)
Cable Diameter Range: (Min to Max outer diameter in mm)
Quantity & Delivery Destination: (Port or postal code)
Special Requirements: (High-temp seals, custom laser marking, MTC 3.1 documentation)
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