Brass Cable Gland Locknut
Brass cable gland locknuts secure cable glands, connectors, and conduit fittings to enclosure walls, junction boxes, and control panels. Forged from high-grade brass bar stock, these components provide high mechanical tensile strength, reliable electrical bonding paths for grounding, and superior corrosion resistance compared to steel alternatives. Available in comprehensive metric (M), PG, NPT, and G thread profiles to match global electrical entry standards.
Precision-machined brass locknuts designed for secure, vibration-resistant cable gland retention in industrial electrical enclosures and automation machinery. Engineered with stable thread tolerances and full-metal electrical continuity.
Product Overview
Brass cable gland locknuts secure cable glands, connectors, and conduit fittings to enclosure walls, junction boxes, and control panels. Forged from high-grade brass bar stock, these components provide high mechanical tensile strength, reliable electrical bonding paths for grounding, and superior corrosion resistance compared to steel alternatives. Available in comprehensive metric (M), PG, NPT, and G thread profiles to match global electrical entry standards.
Key Features
Material Integrity: Forged and CNC-machined from solid brass (CuZn39Pb3 / C36000), offering high mechanical strength and natural corrosion resistance. Surface nickel plating is available for enhanced atmospheric and salt-spray protection.
Thread Precision: Precision-cut threads (matching ISO 6H or equivalent standards) ensure smooth engagement with cable glands without binding, galling, or stripping.
Vibration Resistance: Flat bearing surfaces and uniform wall thickness distribute clamping forces evenly, preventing loosening under continuous industrial vibration or mechanical shock.
Grounding Continuity: Full-metal brass construction maintains continuous electrical bonding between the cable gland and metal enclosures for safety compliance.
Technical Specifications
|
Parameter |
Specification Details |
|
Material |
Brass (H59, CuZn39Pb3, C36000) / Nickel-plated Brass |
|
Thread Types |
Metric (M12 to M63), PG (PG7 to PG48), NPT (1/4" to 2"), G (PF) |
|
Manufacturing Process |
High-speed automatic lathe turning / CNC machining, thoroughly deburred |
|
Operating Temperature |
-40°C to +100°C (Material-dependent) |
|
Quality & Compliance |
RoHS, REACH, ISO metric thread standards, ISO 9001 certified manufacturing |
Product Options
Finish Options: Plain raw brass / Bright nickel-plated finish (for humid or outdoor environments).
Thread Variations:
Metric: M12 x 1.5 through M63 x 1.5
PG: PG7 through PG48
NPT / G: Standard industrial pipe thread sizes
Profile Configurations: Standard hexagonal profile, thin-pattern profile for space-constrained junction boxes, and integrated flange variants.
Applications
Industrial electrical control cabinets and power distribution panels (NEMA / IP rated enclosures).
Heavy machinery and factory automation equipment housing.
Outdoor junction boxes, instrumentation housings, and telecommunication shelters.
HVAC control systems and marine electrical equipment panels.
OEM & ODM Customization
Non-Standard Threads: Custom thread pitches, oversized inner diameters, or specialized imperial-to-metric conversions.
Special Alloys: CuZn40Pb2 or specific lead-free brass alloys to meet regional export and environmental regulations.
Custom Dimensions: Altered thickness, specific wrench flat dimensions, or specialized outer knurling for manual pre-tightening.
Industrial Packaging: Bulk bagging, bar-coded labeling, or customized kit packaging tailored for automated assembly lines.
Quality Control
Machining Inspection: Automated optical sorting and manual micrometer verification of thread major/minor diameters and pitch accuracy against ISO manufacturing standards.
Torque Testing: Regular destructive torque testing on CNC production batches to verify structural breaking limits and thread shear resistance.
Material Traceability: Mill Test Certificates (MTC) available upon request, verifying the exact chemical composition of raw brass bars.
Documentation Support: RoHS declarations, material safety data sheets (MSDS), and dimensional inspection reports supplied with commercial shipments.
Frequently Asked Questions
Q: How do I select the correct locknut size for my cable gland?
A: Match the locknut thread type and size directly to the connection thread of your cable gland (e.g., an M20x1.5 cable gland requires an M20x1.5 locknut).
Q: What is the practical difference between raw brass and nickel-plated brass locknuts?
A: Raw brass provides standard indoor corrosion resistance and grounding continuity. Nickel-plated brass adds a protective metallic coating that prevents oxidation and improves salt-spray resistance in outdoor or humid applications.
Q: Can these locknuts withstand high-vibration industrial machinery?
A: Yes. The precise 6H thread tolerance and uniform hex face design maintain consistent clamping friction against enclosure walls, minimizing the risk of vibration-induced loosening.
Q: Are custom thread sizes or special wall thicknesses available for OEM projects?
A: Yes. CNC lathe setups accommodate custom thicknesses, non-standard thread pitches, or specialized outer profiles based on provided 2D/3D engineering drawings.
Q: What is the standard Minimum Order Quantity (MOQ)?
A: MOQs vary by thread size, typically starting at 1,000 pieces per size for standard catalog items. Lower quantities may be available for existing stock configurations.
Q: What is the typical production lead time for bulk orders?
A: Standard stocked sizes ship within 3 to 5 business days. Custom machined production runs typically require 15 to 25 business days depending on volume and plating requirements.
Request a Quote & Engineering Resources
To receive a formal quotation, technical documentation, or CAD models for your project, please provide the following details:
Thread Type & Size: (e.g., Metric M20x1.5, PG13.5, NPT 1/2")
Material / Finish: (Raw brass vs. Nickel-plated brass)
Quantity: (Per order / Annual volume forecast)
Special Requirements: (Custom thickness, packaging specifications, or compliance documents)
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