WIND POWER GENERATION EQUIPMENTS-BOLTS

Double end stud for mechanical equipment
■  Material: 42CrMoA /42CrMo4
■  Property Class: 10.9
■  Specification: M(36-72)x2000mm

Nacelle and tower connection bolt
■  Material: 42CrMoA /42CrMo4/ 40CrNiMoA
■  Property Class: 10.9
■  Specification: M(27-72)(150-1000)mm
■  Surface treatment: HDG/Dacromet

Blade connection stud
■  Material: 42CrMoA/42CrMo4/ 40CrNiMoA
■  Property Class: 10H/12H
■  Surface treatment: Dacromet

Blade embedded bushing and cross nuts
Fasteners |   News

About us 

Our sales team is composed of professionals with more than 15 years of experience in the fastener industry. They are proficient in understanding quality requirements based on specifications and relevant standards, and help customers source high-quality products with the best prices and the shortest lead times.
Integrity, reliability and efficiency are the three core driving forces of our business operation. We aim to provide global customers with easy access to abundant resources through continuous efforts and worldwide cooperation.
We sincerely extend our hand for cooperation and seek win-win partnership. The following product list is for your reference only. Our product range is not limited to the items listed, which are commonly applied in your procurement scenarios.

Core Competitiveness 

■  Integrated supply chain, simplify purchasing process

■  Mature production technology and strict inspection system
■  Large-scale production to control comprehensive cost
■  Quick response&flexible customization for special demands
■  Stable production capacity for long-term bulk cooperation
■  Products compliant with international industrial standards

Core Advantages 

■  Complete product range, one-stop industrial parts procurement.

■  Strict quality control, stable precision and reliable performance.
■  Factory direct supply, cost-effective with competitive price.
■  Strong OEM&custom service for non-standard parts.
■  Sufficient stock, fast delivery and short lead time.
■  Global shipping solution, professional export service.

Core Products 

Our core products cover high-strength fasteners and custom non‑standard fasteners. With mature cold heading and hot heading production processes, we can manufacture various special-shaped, special-size and special-material fasteners strictly in accordance with customers’ drawings and samples. We support non-standard customization, small-batch trial production and mass production. Strict quality control, stable delivery and cost-effective solutions are our advantages. We are committed to providing reliable fastening solutions for machinery, construction, engineering and various industrial fields.

CONCAVE HEX LOCK NUTs
■  Grade 2  H.D.G Oversize Tapped
■  Size: 1/2-13,5/8"-11, 3/4"-11
■  Bincaved Hexagon Lock Tuercas
■  MF type curved locknut 
■  Oval Neck Track Bolt H.D.G 
■  Perno Eclisa
■  Pernos Ellipse
■  Elliptic Neck Track Railway Bolt
■  Oval Neck Bolt For Rail Track Railway
■  Hex Bolts,A307 Grade A
■  Hex Machine Bolts,A307 Grade A 
■  Hex Machine Bolts,Grade 5 
■  Hex Tap Bolts, Full Thread,A307 Grade A 

■  Hex Tap Bolts, Full Thread,Grade 5 

■  Heavy Hex Bolts,A307 Grade B 

■  Hex Cap Screws, Grade 2  
■  Hex Cap Screws,Grade 5  
■  Hex Cap Screws,Grade 8  

■  High Thickness Head Cap Screw Grade 8 

■  High Thickness Head Bolt Class 10.9 & 12.9 

■  Metric Hex Bolt Class 10.9 & 12.9 

■  ASTM A193 B7/B7M/B16  (Size: 1/2"--4")

■  ASTM A320L7/L7M  (Size:  1/2"--2 1/2" ）

■  MATERIAL: 4142，4140

■  ASTM A193 B7—ASTM A194 2H

■  ASTM A193B7M— ASTM A1942HM

■  ASTM A320L7— ASTM A194GR.7

■  ASTM A320L7M— ASTM A194GR7M


The most common materials for stud bolts (for flanges) are ASTM A193 (grade B7, B8, B8M, B8T), ASTM A453 (grade 660), ASTM A320 (grade L7, L7M), and ASTM A182 (duplex and super duplex bolting). For aggressive fluids and environments, stud bolts can be coated with Xylan/PTFE, Zinc and other materials.

■  A193 grade B7 (AISI 4140); 

■  A193 grade B8 (AISI 304) ; 

■  A193 grade B8M (AISI 316) 

Stud Bolts' Coating
Stud bolts can be coated to increase the resistance to corrosion. The most common types of coatings for stud bolts are listed below:

Electro zinc plating
Electro cadmium plating
Hot dip galvanizing
PTFE Coating
Phosphate coating
Electroless nickel plating
Zinc-nickel coating
Aluminum coating
Silver coating
Zinc/Nickel by electrodeposition
Xylan coating
■  F436 Hardened Flat Washer 
■  DIN7991 Heavy Hex Structural Bolts  
■  DIN6914 Hex Structural Bolts
■  DIN6915 Heavy Nuts

■  DIN6916 Flat Washer

■  A325 Type 1 Heavy Hex Structural Bolts 
■  A325M Type 1 Heavy Hex Structural Bolts  
■  A490M Type 1 Hex Structural Bolts
■  A490 Type 1 Hex Structural Bolts

■  A563 DH HEX HEAVY NUTS 

■  A563M DH HEX HEAVY NUTS 

■ A194 2H HEX HEAVY NUTS 

■ A194 2HM HEX HEAVY NUTS 

Contact us

Feel free please to let us know your demands, including usage scenario, quantity,share more specifications, technical drawing, sample and special requests.


We are ready to support your project at any time. 


Email: nbfasteners@yeah.net 

Phone:  (86) 18006626989 

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