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Hexagonal Chemical Hardware Galvanized Through Nut Chemical Screws Accessories

Categories Chemical Hardware
Precision: Min0.001
Durability: Long-lasting under harsh chemical exposure
Category: screws
Surface treatment: Customized
Sizeoptions: M6, M8, M10, M12
Sample period: 10 to 15 days
Brand Name: SITUO
Model Number: ST-130004
Certification: ISO9001 & TS16949
Place of Origin: GuangDong Dongguan
MOQ: 1PCS
Price: 5-10 USD per item
Payment Terms: T/T
Supply Ability: 10000PCS per day
Delivery Time: Communication
Packaging Details: Communication
Productname: Chemical Hardware
Material grade: 1144
head shape: Customized
Corrosionresistance: High
packing: carton
Weight: Varies by size
Material: carbon steel
Thread: M12
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  • Product Details
  • Company Profile

Hexagonal Chemical Hardware Galvanized Through Nut Chemical Screws Accessories

Hexagonal Chemical Hardware Galvanized Through Nut Chemical Screws Accessories
Hexagonal carbon steel galvanized through nut precision chemical screws and accessories designed for industrial applications requiring high precision and corrosion resistance.
Application Scenarios and Characteristics
Hexagon carbon steel galvanized screws are primarily used in non-strongly corrosive, medium-low load, and precision assembly scenarios in chemical equipment. Machining significantly improves dimensional accuracy and thread consistency, making them suitable for equipment sealing and long-term stable operation.

Core Application Scenarios in Chemical Equipment
General Equipment Casings and Frames
  • Application: Equipment casings, supports, panels, access doors in dry, non-corrosive environments
  • Service conditions: Normal temperature and pressure, neutral/weakly alkaline atmosphere, no acid or alkali spray
  • Advantages: High strength, low cost, easy installation, meeting structural fastening and anti-rust requirements
Pipeline and Valve Accessories
  • Application: Flanges, valves, filters, instrument connections for pipelines conveying water, steam, neutral gas/oil
  • Service conditions: C2-C3 corrosive environment (low-medium pollution, low salt spray)
  • Restriction: Prohibited in strong acid, strong alkali, high chloride ion (Cl⁻), hydrogen sulfide (H₂S) media
Rotating Equipment (Pumps, Fans, Stirrers, etc.)
  • Application: Bases, bearing housings, coupling guards, cooling systems and other non-sealed, non-pressure parts
  • Service conditions: Vibration environment, circulating water/cooling air, slight condensation
  • Advantages: High strength (mainly Grade 8.8), anti-vibration, easy maintenance
Instruments and Control Systems
  • Application: Fixing and installation of transmitters, flow meters, control cabinets, junction boxes
  • Service conditions: Clean, low humidity, no direct contact with process media
  • Key point: High machining precision ensures instrument positioning and long-term stability
Auxiliary Systems and Non-Critical Components
  • Application: Ladders, platforms, guardrails, ventilation ducts, cable trays, etc.
  • Service conditions: Outdoor/semi-outdoor, industrial atmosphere, small amount of dust and moisture
  • Recommendation: Prioritize hot-dip galvanizing (thick coating, long corrosion resistance)

Core Characteristics of Material and Process
Material and Strength (Carbon Steel)
  • Common grades: Grade 4.8 (low carbon steel, unquenched), Grade 8.8 (medium carbon steel, quenched and tempered)
  • Performance: Grade 8.8 tensile strength ≥ 800 MPa, balancing strength and toughness for medium-low load in chemical equipment
  • Limitation: Bare carbon steel is not corrosion-resistant and requires surface treatment
Galvanizing for Corrosion Protection
Principle: Zinc acts as sacrificial anode, corroding preferentially to protect the steel substrate.
ProcessCoating ThicknessSalt Spray Resistance (NSS)Application Scenario
Electro-galvanizing (blue/color zinc)5-15 μm48-120 hIndoor, dry, mild corrosion
Hot-dip galvanizing50-150 μm500-1000 hOutdoor, humid, industrial atmosphere
Environmental taboos: Not resistant to strong acid, strong alkali, high Cl⁻, H₂S, high temperature and high humidity organic acids.
Precision Advantages of Machining
  • Dimensional accuracy: Smaller tolerances for hexagon width across flats, thickness, shank diameter, thread pitch diameter (up to Grade 6g/6h)
  • Thread quality: Complete profile, no burrs, smooth fitting, better sealing surface fit
  • Consistency: Stable precision per piece/batch, suitable for precision assembly and repeated disassembly
  • Customization: Capable of machining non-standard lengths, special threads, stepped shanks, chamfers and other complex structures

Selection and Application Guidelines
  • Environment matching: Dry & clean (C1): Electro-galvanized Grade 4.8/8.8; Industrial atmosphere/humid (C2-C3): Hot-dip galvanized Grade 8.8; Strong corrosion / high Cl⁻: Forbidden, use 316 stainless steel, Hastelloy, etc.
  • Strength and load: Static load / non-critical: Grade 4.8; Dynamic load / vibration / critical structure: Grade 8.8 or higher
  • Sealing and assembly: Sealing surfaces: High machining precision + gaskets/sealant to prevent media leakage; Preload: Tighten strictly according to torque values to avoid loosening and galling
  • Maintenance and service life: Regularly inspect coating integrity; repair or replace if damaged; Service life of hot-dip galvanizing in C3 environment: approx. 15-20 years
We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs. Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001.
Manufacturing Capabilities
Main ProductsStainless steel screws, carbon steel screws, pins, rivets, nuts, eccentric nails, embedded parts, and other fasteners
Business TypeFactory / Manufacturer
ServicesCNC Machining, Turning and Milling, CNC Turning, Cold heading, Stamping, Assembly Service
MaterialsAluminum: AL 6061-T6, 6063, 7075-T etc
Stainless steel: 303,304,304L,316L,316F,630,410,420,430, etc
Steel: 4140, Q235, Q345B,20#,45# 1215,12L14,1144,1006,1008,1010,1015,1018,10B21,1035,1065 etc.
Alloy steel: 5140,4135,4140,3435,5120,415,435,440 etc
Titanium: TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc
Brass: C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90),C27000,C51900,C11000,C3604,H62,H65 etc
Copper, bronze, Magnesium alloy, Delrin, POM, Acrylic, PC, etc.
FinishesSandblasting, Anodize color, Blackening, Zinc/Nickel Plating, Polish, Power coating, Passivation PVD, Titanium Plating, Electrogalvanizing, electroplating chromium, electrophoresis, QPQ(Quench-Polish-Quench), Electro Polishing, Chrome Plating, Knurl, Laser etch Logo, etc.
Drawing FormatSTEP, STP, GIS, CAD, PDF, DWG, DXF etc or samples
Tolerance+/-0.01mm ~ +/-0.05mm
Surface RoughnessRa 0.1~3.2
InspectionComplete inspection lab with Micrometer, Optical Comparator, Caliper Vernier, CMM, Depth Caliper Vernier, Universal Protractor, Clock Gauge, Internal Centigrade Gauge
Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment and implement 8S management with ISO9001 and TS16949 automotive certifications.
Notable Customers
Our customers include bo-sch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.
Quality Hexagonal Chemical Hardware Galvanized Through Nut Chemical Screws Accessories for sale
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