Delivery Time:3o days
Certification:ISO 9001

5.5 X 35 Stainless Steel Metal Screws Hex Washer Head Thread Cutting Screws

Stainles steel hex washer head thread Cutting Screw is with a cutting on the thread point which is benefit for improving drilling speed , it is suitable for wooden pieces or plastic sheets .

The point usually is designed as sharp point ( type 17 ) and the cutting length covers 3 or 4 threads normally .
 

Material

Hex washer head thread cutting screws are made from stainless steel
 

Specification

There are many standards for thread cutting screws DIN ,ANSI and ISO , for example ANSI standard is scope from #2 to 1/2 usually 

Normal sizes (#)	D		H	PH #
	min	max	min
4	0.195	0.225	0.086	1
5	0.220	0.252	0.089	2
6	0.244	0.279	0.106	2
7	0.268	0.305	0.114	2
8	0.292	0.332	0.121	2
9	0.316	0.358	0.136	2
10	0.34	0.385	0.146	2
12	0.389	0.438	0.156	3
14	0.437	0.491	0.171	3
1/4	0.452	0.507	0.171	3
5/16	0.568	0.635	0.216	4
3/8	0.685	0.762	0.245	4
1/2	0.775	0.875	0.276	4

                                                       ANSI Standard thread cutting screws flat head
 
 
Physical Performance
.
Case hardness : HV600
 
Core hardness : HV500
 
Carburizing depth : 0.01 min
 
Tensile Strenght : 600 N/mm2
 
 
Finishing
 

Finishing	Characteristics
Zinc	Various color can be choosed and perfect on anti-corrosion
Nickel	Make the surface of the screws more bright and hardened and the performance of screws will be improved
Polish	Improving the brightness of surface but is inferior is not as zinc in anti-corrosion
Tin	it is very perfect to be anti-rust , and widely used to components
Brass	It is usually used with Nickel for more good anti-corrrosion.
Dacromet	Is used for screws with big sizes and can stop screws to be rusted long time even under bad surroundings .

Optional Head Types

 We provide many different head drives ( sockets ) like CSK or FLAT ,OVAL ,TRUSS ,PAN ( JIS / ANSI ) and BINDING etc as following showed .



 

FAQs
 
Q. How about your capacity ?
A. We have scores of advanced machines with two shifts every day , we can manufacture about 100 tons each month .
 
Q. How long I can get samples for approval before placing order ?
A. We can deliver samples within one day for stock , and only one week for new built samples that including built-time for mold or tool .
 
Q. What are your popular payment methods ?
A. T/T is our prior choose , of course , we are also accept L/C , Western union , paypall .
 
Q. Would you provide OEM/ODM service ?
A. OEM/ODM are welcome for us .
 
Q. How about your After-sales service ?
A. We are very please to get feedback about our goods from you , we will settle your any issue or trouble or other you required question in connection with our goods within 24 hours .
 
Q. What materials you usually use ?
A. We usually use Carbon steel ( available Grade 2 to Grade 10 ) , Stainless Steel ( Serial from 200 to Serial 400 ) , Brass ( H59 , H60 , C36000 etc ) ; Aluminum , Bronze and Copper .
 

Q How you control quality ?

A (1) Checking material before feed in
all material must be checked according to the requirements of products before start production .

(2) IPQC ( by handle and auto-machined control )
The semi-finished products must be checked during production to ensure products are always under control .

(3) Chemical elements analysis and physical testing after post treatment
The most metal products need post treatment after formed, we check d