Manufacturer Steel Screw/ Self Driling Screw/Wood Screw/ Chipboard Screw/Roofing Screws

Product Description

Product Description

Introduction to Bolt/Screw

Screws
-  Definition  : A screw is a cylindrical fastener with an external thread, typically used to join two or more components together.
-  Main components  :
-  Head  : The heads of screws come in various shapes, such as flat heads, round heads, countersunk heads, etc. Different head shapes are suitable for different installation requirements.
-  Screw  : The screw section is equipped with external threads and is used in conjunction with nuts or other components with internal threads.
-  Thread  : The external thread is a crucial part of a screw. Its pitch (the distance between adjacent threads) and thread shape (such as triangular threads, trapezoidal threads, etc.) determine the screw's fastening performance.
-  Classification 
-  Classified by use  :
-  Wood screws  : Used for wood connection, the threads are usually deep and the head shapes are diverse.
-  Machine screws  : They are used for connecting metal parts, with high thread accuracy. The head shapes include flat heads, round heads, etc.
-  Self-tapping screw  : It can self-tap threads in relatively soft materials without the need for pre-drilling.
-  Classified by materials  :
-  Carbon steel screws  : They have a relatively low cost and high strength, but poor corrosion resistance.
-  Stainless Steel screws  : Strong corrosion resistance, suitable for humid environments or occasions with corrosive media.
-  Aluminum alloy screws  : Light in weight, good in corrosion resistance, suitable for aerospace and other fields.

Specification

Metal process	stamping, deep stamping, bending, punching, threading, welding, tapping, riveting, turning, deep drawing.
Material	stainless steel, spring steel, carbon steel, copper, brass, bronze, aluminum, alloy.
Surface finish	polished, galvanized, zinc-plated, nickel-plated, chrome-plated, silver-plated, gold-plated, imitation gold-plated, powder coating, etc.
Plating tech	continuous plating, partial plating, and spot plating, etc.
Tolerance	+/-0.02 to +/-0.05.
Inspection	IQC, IPQC, FQC, QA.
Quality control	ISO9001:2008.

MOQ	100PCS
Packing details	plastic + cartons + wooden cases
Payment term	T/T , Western Union, cash etc
Delivery	By sea, by air,  by land,  by courier
Mould time	5-15days
Product lead time	25-30days
Files for quote	PDF, JPG, CAD, 3D

Company Profile

OEM one-stop services

We are a professional production factory specialized in sheet metal fabrication mainly stamping, deep drawing, welding and wire bending.

We have our own equipments for a whole production flow, from mould design, prototypes develop, processing, assembly to surface coating.

We have a high level team of engineers to provide you with the most practical and cost-effective solutions. Our workers are experienced and our quality control is strict. 

We have the ability to provide clients with high quality and low price products. Aligning ourselves with purchasers in the same vision of providing superior quality, has contributed to our success. Also honesty is our best policy. 

Our philosophy is simple: we deliver our promises.

If you are looking for a manufacturer to fill all of your custom sheet metal parts for your production or business, then you come to the right place. 

Hengjin Hardware provides free technical assistance for your projects. 

When you contact us, you're assured of an experience that exceeds your expectations, you'll enjoy place of mind knowing that you found dedicate professionals.

Packaging & Shipping

Packaging materials

Small metal stamping parts are commonly made of plastic bags, plastic boxes, etc.

Medium-sized stamping parts, paper boxes or cartons are commonly used, which can provide certain cushioning protection and are environmentally friendly.

Large or heavy stamping parts, pallet packaging can provide better support and protection, facilitating forklift handling.

In special circumstances, metal packaging is used, such as when higher protective strength is required or when moisture-proof and rust-proof requirements are needed.

 

Packaging technology

Bulk packaging: The stamped parts are directly placed into the packaging container, which is suitable for products with regular shapes and not easy to be damaged.

Pallet packaging: Place the stamped parts on pallets and then seal them with plastic film or cartons for easy stacking and transportation.

Tape and reel packaging: For some small stamping parts, such as electronic components, tape or reels are used for packaging to facilitate automated assembly.

Cushioning protection: Add cushioning materials such as foam and sponge inside the package to prevent the stamped parts from being damaged due to collision during transportation.

Our Advantages :

1. Over 15 years professional technology in metal stamping/punching moulds/molds/tools/dies making, metal parts' making;

2. 10 years experience in developing and export in foreign trade;

3. Certificate: ISO9001:2008 etc;

4. All materials meet ROSH, certificates for materials are available;

5. Capacity can be 2000-800K PCS each day;

6. Customize: OEM or ODM according to buyers' requirement;

7. Various high-quality import equipment and machine center;

8. IQC/PQC/FQC to control the quality all the way;

9. Ensure no defective products to send out;

10. Small orders are accepted;

FAQ

Q: How soon can I get reply after send inquiry?
A:All inquiries will be replied within two hours except sleeping time in China.    
 
Q: How soon can I get samples ?
A: The drawing determines the length of time,Generally samples can be sent out within 10 working days after product drawing confirmed by both side.  
 
Q: What file format can you accept for my products?
A: 1.We can accept varies format, step, stp, jpg,pdf, dwg, dxf,3d and so on.    
     2.If you do not have a prepared CAD file, we can accept a scan of a hand drawn design.  
 
Q: If I don't have drawing, how can I get sample ?
A: If you don't have any drawing,you can send us your sample, we will scan it and make 2D and 3D drawing first, then make sample for you.
 
Q: What are many common materials that you use in projects?  
A: Aluminum,Stainless Steel, Carbon Steel, Copper, Plastics and so on.
 
Q: What's your MOQ(minimum order quantity)
A: Our MOQ is 100 pcs, you are welcome to send us trial order to test our quality and service.
 
Q: What's the payment term do you accept?
A: EXW/FOB Tianjin, paid by T/T, Western Union.