YUYAO HENGXING PIPE CO.,LTD
| Material | Carbon Steel with Zinc Electroplating |
| Salt Spray Rating | 72 Hours ASTM B117 |
| Supply Ability | 200 Ton per Month |
| Delivery Time | 15-20 Days upon 20GP |
| Plating Thickness | Minimum 5 Microns ASTM B633 |
| Payment Terms | L/C, T/T |
| Size Range | 1/2 inch to 4 inch NPT |
| Grounding Compliance | NEC Article 250 |
| Packaging Details | Quantity-counted polybag plus export corrugated carton with pallet, custom labeling available |
| Tooth Design | Serrated Anti-Vibration Profile |
| Certification | UL 514B E345464, ISO9001, SGS |
| Model Number | HX-LN-S-GT |
| Brand Name | HX |
| Place of Origin | YUYAO CHINA |
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Product Specification
| Material | Carbon Steel with Zinc Electroplating | Salt Spray Rating | 72 Hours ASTM B117 |
| Supply Ability | 200 Ton per Month | Delivery Time | 15-20 Days upon 20GP |
| Plating Thickness | Minimum 5 Microns ASTM B633 | Payment Terms | L/C, T/T |
| Size Range | 1/2 inch to 4 inch NPT | Grounding Compliance | NEC Article 250 |
| Packaging Details | Quantity-counted polybag plus export corrugated carton with pallet, custom labeling available | Tooth Design | Serrated Anti-Vibration Profile |
| Certification | UL 514B E345464, ISO9001, SGS | Model Number | HX-LN-S-GT |
| Brand Name | HX | Place of Origin | YUYAO CHINA |
| High Light | Steel EMT conduit locknuts ，Anti vibration grounding locknuts ，UL listed conduit fittings | ||
Since 1996, HX has supplied the electrical construction industry with precision fastening components trusted in over 40 countries. Our Steel EMT Locknuts with grounding teeth represent the culmination of 27 years of metallurgical and manufacturing expertise — combining anti-vibration locking geometry with positive grounding continuity in a single, UL E345464 listed component.
Why Project Procurement Teams Choose HX Locknuts| Procurement Challenge | HX Partnership Advantage |
|---|---|
| Smooth-face locknuts loosen under sustained vibration from heavy machinery, HVAC equipment, and seismic activity. Loose connections cause arcing, overheating, and fire risk. | Patented serrated grounding teeth cut through paint and oxidation to establish direct metal-to-metal contact. Anti-vibration geometry mechanically locks against the enclosure surface. Maintains bonding integrity throughout the installation lifecycle. |
| Contractors spend additional labor installing separate bonding jumpers to meet NEC Article 250 grounding requirements — adding US$3-5 per connection in materials and time. | Built-in grounding teeth eliminate the need for separate bonding jumpers. One locknut provides both mechanical fastening and NEC-compliant equipment grounding. Save US$3-5 per connection across thousands of connections. |
| Thin-gauge stamped locknuts from commodity suppliers deform under tightening torque, compromising clamping force and creating potential pullout failures. | Heavy-gauge carbon steel stampings resist deformation at full rated torque. Consistent clamping force across the entire bearing surface. Zero pullout failures in 27 years of field performance. |
| Project submittal packages require UL listing documentation, salt spray test reports, and material certificates — commodity suppliers rarely provide complete technical documentation. | Complete documentation package with every shipment: UL E345464 listing verification, ASTM B117 salt spray test reports, material mill certificates, certificate of origin. Ready for your next project submittal. |
| Parameter | Specification |
|---|---|
| Material | Carbon Steel Stampings, Zinc Electroplated |
| Trade Sizes | 1/2, 3/4, 1, 1-1/4, 1-1/2, 2, 2-1/2, 3, 4 inch |
| Thread Type | NPT Female Thread, Straight Pipe Thread |
| Tooth Design | Serrated Grounding Teeth with Anti-Vibration Locking Profile |
| Plating Specification | Zinc Electroplated, Minimum 5 Microns (ASTM B633 Type III SC1) |
| Certifications | UL 514B Listed (E345464), ISO9001:2015, SGS |
| Grounding Compliance | NEC Article 250, CEC Section 10 |
| Salt Spray Resistance | 72 Hours Minimum (ASTM B117) |
| Operating Temperature | -40 deg C to 150 deg C Continuous |
| MOQ | 2,000 PCS per Size |
| Supply Ability | 200 Metric Tons per Month |
| Lead Time | 15-20 Days per 20GP Container |
| Port | Ningbo or Shanghai, China |
Quantity-counted heat-sealed polybags in partitioned export cartons. Palletized with stretch wrap and corner protectors. OEM private-label carton printing, branded polybags, QR-coded labels. Custom kitting: pre-packaged by floor, zone, or electrical room per contractor installation schedule. 12-month manufacturing defect warranty with free replacement for any quality non-conformance.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
1996
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yuyao Hengxing Pipe Co.,LTD located in Yuyao City, Zhejiang Province, is one of professional manufacturers who produce metal conduit and connector such as Liquid tight connector & conduit, EMT tube, & fittings, ,flexible conduit since 1996. Our scale of production and production capacity ... Yuyao Hengxing Pipe Co.,LTD located in Yuyao City, Zhejiang Province, is one of professional manufacturers who produce metal conduit and connector such as Liquid tight connector & conduit, EMT tube, & fittings, ,flexible conduit since 1996. Our scale of production and production capacity ...
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