World Wide Suppliers of Industrial Sapphire&Ruby Precision Parts

Sapphire to Metal for Fluidic,Metrology&Medical Components

ISO 9001:2019 Mfg&Managment Certified Companies

Cold Forging Bolts

Cold forming or cold heading, is a manufacturing process where metal is worked at room temperature to create components and finished products,and is used to make a variety of goods including fasteners, car parts, and building supplies.

Cold forming has more advantages to other machining processes, such as screw machining.It poses

  •     Less waste
  •     Faster production
  •     Stronger parts
  •     Reduced costs
  •     Tight tolerances and critical specs









Material: Carbon Steel, Stainless Steel, Brass,Bronze Aluminum


Tolerances:0.02mm in diameter,0.1mm in length


Machining Process:

  • Cold Forging, Cold Heading
  •  Roll forming
  • Roll threading,
  • Tapping
  • Broaching
  • Grinding
  • Turning/Shaving
  • Slotting/Sawing
  • Reheading
  • Knurling
  • Finishing
  • Burnishing
  • Assembly
  • Trimming
  • Drilling
  • Milling
  • Flattening

Min. Order: 100-50000 pcs (or negotiable)

Surface Treatment: Polishing, Heat Treatment, Sand Blasting, Zinc Plated, chemical Film,

Packing: Carton Box, Blister tray, Pallet, Wooden Case.

Certificate:ISO9001:2008


Custom Cold Heading Parts Application:


Systems of Suspension, Brake, Engine, Clutch, Chassis, Exhaust, Cable and many other industries.

Such as:

Application: Airbag mount assembly
Component: Attachment pin

Application: Automotive brake assembly
Component: Piston rod

Application: Door lock
Component: Dead bolt

Application: Steering system
Component: Shaft with involute spline

Application: Motorcycle wheel assembly
Component: Internally-threaded fastener for
attachment of wheel spokes to tire rim

Application: Automotive engine assembly
Component: Pipe plug housing requiring smooth threads
to accept O-ring assembly; also, bottom of cup must be
flat to .05" and first step in cup must be smooth

Application: Commercial air conditioner
Component: Valve stem


Machining Tolerances


Normally the diameters tolerance is ± 0.05mm. Length tolerance is ±0.1mm.on demands, we can also achieve: diameters tolerance is ±0.02mm.Length tolerance is ±0.05mm Material Selection: Normally used carbon steel 35# or 45# ,Stainless Steel:304 or 316.According to customer requirement use Aluminum and Brass


Surface Treatment


Heat treatment, Zinc Plated, Zinc-Nickel Alloy Plated, Chrome Plated


Below pictures are just very few parts which we present as a brief show,in fact,we have made more than several thousand types of custom forging parts for customers world wide

We have following bolts available

 

Hex Bolts    

 Flange Bolts       

U Bolts J Bolts

D Head Bolts      

Socket Shoulder Bolts      

Heavy Hex Bolts

Socket Head Bolts

Con Rod Bolts    

Crank Shaft Bolts      

Cylinder Head Bolts  

Flywheel Bolts

Gear Flange Bolts     

Long Bolts   

Main Bearing Cap Bolts   




Adjusting Stud Bolt
Long Bolts



Car Seat Adjusting Bolt


Flange Bolts
Round Head Special Bolt


Threaded Stud Bolt
Main Bearing Cap Bolts


Cylinder Stud Bolt
  Speciality Bolt