M3 M4 M5 M6 M8 Carbon Steel Grade 8.8 10.9 12.9 Combination Screws with Spring Washer

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: ss
• Groove: Cross
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: Non-Standard
• Grade: 4.8
• Finish: Zinc, Zinc Plated, Chrome Plated, Customised
• Measurement: Metric, Inch
• Types: Combination Screw
• OEM/ODM: Yes
• Delivery Time: 10 Days
• Transport Package: Carton
• Specification: M1-M16, Customized size
• Trademark: SHI SHI TONG
• Origin: China
• Production Capacity: 1400000 Piece/Pieces Per Day
• Package Size: 31.00cm * 21.00cm * 17.00cm
• Package Gross Weight: 20.000kg

Product Description

1. We have been a supplier of stainless steel and titanium raw materials for 23 years. 
2.We can provide inspection reports, quality reports, ISO, SGS, RoHS certificates, etc.
3.We always put quality first, and strictly monitor the product quality of each process.
4.Imported moulds thread rolling dies plates and  + 8 quality inspection procedures, yield rate ≥99.9%, production capacity up to 10 million/day.
5.Schematic drawing in 30 minutes, mold customization is 2-3 days faster than peers, 3-8 hours to sample, 15 hours online customer service consultation.

Quality Controls

Product Parameters

Machine Name	Brand & Model No.	Quantity	Number of Year(s) Used	Condition
CNC Lathe	BAO YU,JING FO SI	10	5	Acceptable
Bench Tapping Machine	WEST LAKE	6	3	Acceptable
SlMachineot Making	HUA CHUANG	4	6	Acceptable
Machine Bending	DGDY,DSM,MA100301,AMADA	4	3	Acceptable
Drilling Machine	TAILIFT,FFY	5	8	Acceptable
Cold header	GUOLING,JUSHENG,DINGTAI	78	8	Acceptable
Thread rolling machine	JIANCAI,GUOLING,SANJING,JINGYIDA	85	8	Acceptable
Print-trimmer	XIANGSHENG	8	10	Acceptable
Combination machine	MINGTANG,XUSHENG	18	10	Acceptable
Automatic lathe	TAIRONG	20	10	Acceptable
Secondary processing table lathe	TAIRONG,XINYU	15	5	Acceptable
Multistage cold former	CHANGHONG	2	9	Acceptable

 

Detailed Photos

Company Profile

FAQ

1: What materials do you guys offer your screws in?
Typically our screws are carbon steel, stainless steel, titanium, copper, aluminum.

2: Do you only produce screws?
Currently, we also provide customized long screws, special screws, other screws and fasteners that are difficult to find.

3: How do you control the quality?
During the production process, every procedure is inspected at any time to ensure that the size and appearance of the production meet the customer's requirements. Can provide on-line video real-time feedback production progress and dimension check.

4: I'm working on a tight deadline and I need screws ASAP. Can you help me?
We normally have a 10-17 working days lead time for all custom screw orders. For some applications we can expedite to 2-5 working days. Please ask for details.

5: I am not sure what screws should be used, I need a little engineering help. Do you provide assistance?
We have a complete engineering department to provide you with the most suitable screws according to your products.Contact the engineer now.

6: I need to customize the screw, but the screw is not listed on your website. what should I do?
Our professional engineers can design professional drawings according to your needs, and can also produce according to the drawings you provide.

7: What types of payments do you accept?
We currently accept wire transfers, paypal, and credit cards.