Zinc Plated Nuts
Product: Zinc Plated nuts
Standard: GB39
Material: Q195,ZT195,08AL,SWRCH35K/45K etc.
Surface: zinc plated
Specification Range: M3-M24
Property Class:6,8,10
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Product Introduction
Product: Zinc Plated nuts
Standard: GB39
Material: Q195,ZT195,08AL,SWRCH35K/45K etc.
Surface: zinc plated
Specification Range: M3-M24
Property Class:6,8,10
GB/T 39-1988 is a current recommended national standard of China, fully titled "Square nuts - Grade C", and serves as a basic standards in the field of mechanical fasteners.

Mechanical Properties


Core Function and Application
Unified Specifications:
Clearly defines the thread specifications (M3 to M24), dimensions, tolerances, technical methods, and markings for Grade C square nuts, providing a unified technical basis for design, production, procurement, and inspection.
Quality Control:
Defines the precision grade for Grade products (suitable for general scenarios with low precision requirements and limited assembly space), ensuring interchangeability and versatility. Simplified Selection: Provides standardized parameter tables to facilitate engineering design and cost control.
Main Industry Application Scenarios
Construction & Infrastructure:
Steel structures, scaffolding,template, pipe supports, temporary bridge fixing, etc., emphasizing rapid assembly and economy.
One-stop Solution
General & Equipment: Agricultural machinery, construction machinery, conveying equipment, fans, pumps, general frames, etc., for non-precision transmission parts.
Hardware & Furniture:
Metal furniture, shelf equipment, simple doors/windows, guardrails, etc.
Social security agent
Automotive & Transportation: Commercial vehicle chassis, trailers, vehicle bodies, fastening of non-critical structural component communication: Poles and towers, cable trays, distribution boxes, foundation fixing of outdoor equipment.
Core Features
Product Grade:
Grade C (corresponding to Product Grade C in ISO 4759-2), featuring lower precision and economical cost, suitable for non-precision, heavy-duty, and general connections.
01
Shape:
Square, facilitating tig with wrenches or open tools, offering better anti-rotation performance than hex nuts.
02
Thread Range:
M3 to M24, covering common scenarios for medium and small specifications Performance: Commonly uses Q235, 45# steel, etc., meeting general mechanical performance requirements; surface treatments are mostly blackening or galvanizing for base protection.
03
Interchangeability:
Strictly follows national standard dimensions to ensure universal assembly with bolts and screws of the same specification.
04
Main Industry Application Scenarios
Construction and Infrastructure; Machinery Manufacturing; Automotive and Transportation; Energy and Power; Metallurgy and Mining; Water Treatment and Ships.
Established in 2005, our company has evolved over two decades of continuous development into a leading regional enterprise in the fastener industry with fully automated end-to-end production. With an annual output value exceeding RMB 130 million, our product range covers diverse market segments from mid-range to high-end and is distributed worldwide

Our factory & quipment




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