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■  Oval Neck Track Bolt H.DG 

■  Perno Eclisa

■  Pernos Ellipse

■  Elliptic Neck Track Railway Bolt

■  Oval Neck Bolt For Rail Track Railway

ASTM A193 Grade B7 Full Threaded Studs,Stud Bolts


■  Typical Material:Chromium-Molybdenum Alloy Steel

■  Material and Mechanical Properties:ASTM A193-10a Grade B7.

■  Threads:2A

■  Typical Hardness:HRC 35 Maximum

■  Tensile Strength:125,000 PSI Min(up to 2-1/2 diameter)

■  Yield Strength:105,000 psi Min(up to 2-1/2 diameter)


■  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.

ASTM A193 grade B7 (AISI 4140); ASTM A193 grade B8 (AISI 304) ; ASTM 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


Hex Bolts,A307 Grade A


■  Typical Material:Low Carbon Steel

■  Material and Mechanical Properties:ASTM A307 Grade A

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRB 69-100

■  Tensile Strength:60,000PSI Minimum



Hex Machine Bolts,A307 Grade A


■  Typical Material:Low Carbon Steel

■  Material and Mechanical Properties:ASTM A307 Grade A

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRB 69-100

■  Tensile Strength:60,000PSI Minimum



Hex Machine Bolts,Grade 5


■  Typical Material:Medium Carbon Steel

■  Material and Mechanical Properties:SAE J429 Grade 5.

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRC 25-34 on sizes 1/4 to 1 inch;HRC 19-30 on sizes over 1 to 1-1/2 inches.

■  Tensile Strength:120,000PSI Minimum on sizes 1/4 to 1 inch;105,000 PSI Minimum on sizes over 1 to 1-1/2 inches.



Hex Tap Bolts, Full Thread,A307 Grade A


■  Typical Material:Low Carbon Steel

■  Material and Mechanical Properties:ASTM A307 Grade A

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRB 69-100

■  Tensile Strength:60,000PSI Minimum



Hex Tap Bolts, Full Thread,Grade 5


■  Typical Material:Medium Carbon Steel

■  Material and Mechanical Properties:SAE J429 Grade 5.

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRC 25-34 on sizes 1/4 to 1 inch;HRC 19-30 on sizes over 1 to 1-1/2 inches.

■  Tensile Strength:120,000PSI Minimum on sizes 1/4 to 1 inch;105,000 PSI Minimum on sizes over 1 to 1-1/2 inches



Heavy Hex Bolts,A307 Grade B


■  Typical Material:Low Carbon Steel

■  Material and Mechanical Properties:ASTM A307 Grade B

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRB 69-95

■  Tensile Strength:60,000PSI Minimum / 100,000PSI Maximum 



Hex Cap Screws, Grade 2


■  Typical Material:Low Carbon Steel,C1015-C1035

■  Material and Mechanical Properties:SAE J429 Grade 2

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRB 80-100 on sizes 1/4 to 3/4 inch,HRB 70-100 on sizes over 3/4 inch.

■  Tensile Strength:74,000PSI Minimum on sizes 1/4 to 3/4 inch to 6 inches in length;60,000

PSI Minimum on sizes over 3/4 inch and lengths longer than 6 inches.



Hex Cap Screws,Grade 5


■  Typical Material:Medium Carbon Steel

■  Material and Mechanical Properties:SAE J429 Grade 5.

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRC 25-34 on sizes 1/4 to 1 inch;HRC 19-30 on sizes over 1 to 1-1/2 inches.

■  Tensile Strength:120,000PSI Minimum on sizes 1/4 to 1 inch;105,000 PSI Minimum on sizes over 1 to 1-1/2 inches. 



Hex Cap Screws,Grade 8 


■  Typical Material:Medium Carbon Alloy Steel

■  Material and Mechanical Properties:1/4 to 1-1/2 are purchased to meet SAE J429 Grade 8.

■  Diameters over 1-1/2 are  purchased to meet ASTM A354 Grade BD.

■  Dimensions:ASME B18.2.1

■  Typical Hardness:HRC 33-39 on sizes 1/4 to 2-1/2 inches;HRC 31-39 on sizes over 2-1/2 inches.

■  Tensile Strength:150,000 PSI Minimum on sizes 1/4 to 2-1/2 inches;140,000 PSI Minimum on sizes over 2-1/2 inches.

A325 Heavy Hex Structural Bolts


■  Typical Material:Medium Carbon Steel

■  Material and Mechanical Properties:ASTM A325 Type 1

■  Dimensions:ASME B18.2.6

■  Typical Hardness:HRC 25-34 on sizes 1/2 to 1 inch less than 2D in length and HRC 34 max 2D and greater in length;HRC 19-30 on sizes 1-1/8 to 1-1/2 inches less than 3D in length,HRC 30 max 3D and longer lengths.

■  Tensile Strength:120,000PSI Minimum on sizes 1/2 to 1 inch;105,000 PSI Minimum on sizes over 1 to 1-1/2 inches.

■  A563 DH HEX HEAVY NUTS

■  F436 WASHER



High Head Cap Screw | High Head Bolt

10.9 Grade / 1040 MPa / 151Ksi / Rc- C hardness 33-39.


Thread Size                     HEAD HEIGHT                   Regular GR8 Bolts

3/8”                                7.37MM                               6.00mm

7/16”                              8.59MM                               

1/2"                                    9.80MM

9/16”                              11MM

5/8”                                12.22MM

3/4"                                  14.66 MM

7/8”                                17.07MM     

  1”                                 17.93 MM 

 


· Typical Material:Medium Carbon Alloy Steel

· Material and Mechanical Properties:1/4 to 1-1/2 are purchased to meet SAE J429 Grade 8.

· Diameters over 1-1/2 are  purchased to meet ASTM A354 Grade BD.

· Dimensions:ASME B18.2.1

· Typical Hardness:HRC 33-39 on sizes 1/4 to 2-1/2 inches;HRC 31-39 on sizes over 2-1/2 inches.

· Tensile Strength:150,000 PSI Minimum on sizes 1/4 to 2-1/2 inches;140,000 PSI Minimum on sizes over 2-1/2 inches.


Metric Hex Bolts DIN931 Class 10.9 & 12.9  20% High thickness head.


A490 Heavy Hex Structural Bolts


■  Typical Material:Alloy Steel

■  Material and Mechanical Properties:ASTM A490 Type 1

■  Dimensions:ASME B18.2.6

■  Typical Hardness:HRC 33-39 on sizes 1/2 to 1 inch less than 2D in length and HRC 39 max 2D and greater in length;HRC 33-39 on sizes 1-1/8 to 1-1/2 inches less than 3D in length,HRC 39 max 3D and longer lengths.

■  Tensile Strength:150,000 PSI min to 173,000 PSI max


CONCAVE HEX LOCKNUT

■  Grade 2

■  Hot Dipped Galvanized

■  Oversize Tapped

■  Size: 1/2-13,5/8"-11, 3/4"-11

■  Bincaved Hexagon Lock Tuercas

■  MF type curved locknut 



Plow bolts are commonly found in farm, road construction and other heavy equipment.

Flat Head Plow Bolt or  Domed Head Plow Bolt 


■  Standard: ASME B18.9 

■  Mechanical Properties: SAE J429 Grade 5, SAE J-429 Grade 8
■  Finish: Black Oxide  
■  Thread Requirements: ASME B1.1, UNC or UNF, Class 2A  

■  Head Marking: Manufacturer ID and three radial lines 120° apart for Grade5, six radial lines 60° apart for Grade 8

■  Metric for Class 10.9 and 12.9

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


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