HEX BOLTS (DIN931 / DIN933)

HEX BOLTS (DIN931 / DIN933)
Hex bolts have hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.

Common types of hexagon screw head bolts.
  • Stainless steel bolts: Common choice of hex screws since they don't need any coating and are corrosion resistant.
  • Carbon steel bolts: The most common hexagon screw head bolts are zinc plated for added corrosion resistance.
  • Alloy steel bolts: These types of hex bolts are made to withstand an enormous amount of pounds per square inch. They are coated with either cadmium or zinc plating to protect them against corrosion.

INTERNATIONAL STANDARDS

DIN931
  • DIN933
  • DIN 7999-1983
  • UNI5737
  • GB/T 5782-2000
  • BS 4190-2001

APPLICATIONS

  • Hex bolts are available with standard threading or full threading, depending on the length of the bolt.
  • Applications for hexagon screw head bolts can vary from exterior and automotive to marine, coastal, and high temperature environments.

MATERIAL

 

Material Available:

  • LOW CARBON STEEL : C1006 - C1045
  • STAINLESS STEEL: SUS304, SUS316, SUS410
  • GRADE 8.8: C1018 - C1022, 10B21
  • MILD STEEL / MID CARBON STEEL: C1035 - C1045
  • ALLOY STEEL: SCM435 - SCM440 (Grade 10.9, Grade 12.9)
  •  │8│GRADE 1008K 1010 
  • 7 8 GRADE 1015(M<16) CH38F (M≥16)
  • 8 10 GRADE CH38F 1039 10B21 10B33
  • 9 12 GRADE 1039 10B21 10B33 10B38 
  • BRASS C2600, C2700, C2680
  • RED BRASS C1100
  • Phosphor Bronze C5191
  • Aluminum Alloy 1050, 5052, 6061
  • Material according to customer’s specifications

SIZE RANGE

STANDARD SIZE RANGE:
  • D = M5 - M30
  • L = 10MM - 200MM
  • d = 1/4" - 1-1/4"
  • l = 1/2" - 6"

SURFACE TREATMENT

SURFACE TREATMENT TYPES:

  • HEAT TREATMENT
  • ZINC PLATED – WHITE ZINC / YELLOW ZINC / BLACK ZINC
  • Zinc trivalent coatings Cr3+ (Meet RoHS standards)
  • Zinc hexavalent zinc plating Cr6+
  • Nickel plating
  • Black Oxide
  • Hot Dip Galvanised
  • GEOMET® 500
  • DACROMET®
  • Passivation
  • All electro-plating, electro-coating and surface treatment specifications can meet customer's requirements.