Phillips Hex Head Combination Screw Single Coil Spring Lock Washer Assembly Screw Double Washer Sem Screw

• Material: Stainless Steel
• Type: Hexagon Head
• Groove: Cross
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, GB, ANSI, BSW, JIS, GOST
• Grade: A4-70/A4-80
• Product Name: Sam Screw
• Drawing: Accept
• Sample: Free Sample When Is in Stock
• Thread: Unc
• Service: Custom-Made Service
• Color: Polishing
• Transport Package: Plastic Bags and Cartons
• Specification: M4-M12
• Trademark: Tengri
• Origin: China
• HS Code: 7318159090
• Production Capacity: 3000000 Pieces/ Month
• Package Size: 28.00cm * 27.00cm * 18.00cm
• Package Gross Weight: 18.200kg

Product Description

Sem Hexagonal Head Screw Assembled screw with Spring Plain Washer

Standard	Sem screws
Diameter	M2-M12
sample service	Free sample but freight cost is paid by customers(when sample is in stock) sample fee(when samples need to be customized)
Material	SS304,SS316,SS2205,SS2507
MOQ	1000
Surface treatment	Plain, black oxide
Package	Plastic bag, Boxes and cartons, Pallets, Customized
Price terms	EXW, FOB, CIF, etc.
Payment terms	T/T, Paypal, L/C, Western union, etc.
Certifications	ISO 9001
Note	Free Samples could be provided for standard fastener

We need more detail as follow. This will allow us to give you an accurate quotation. 
Before offer the price,get the quote simply by completing and submitting the form below:
• Product: _______            
• Measure: _______( Diameter) x_______(Length)
• Order Quantity: _________________pcs
• Surface treatment: _________________
• Material: _________________
• When do you need it by? __________________
• Where to Shipping: _______________ (Country with postal code please) 
• Email your drawing ( jpeg, png or pdf, word) with minimum 300 dpi resolution for good clarity.

Products Details

Product Description

What is a SEMS Screw?

A SEMS Screw is a generic term used to describe a screw pre-assembled with a free-spinning lock washer. It is a permanent assembly with the washer held in place by the major diameter of the screw thread being larger than the hole of the washer. The SEMS screw is simple, easy to use and available in many different styles making it well suited for many applications.

Advantages of the SEMS Screw:

• Low cost and widely available
• Increases productivity by eliminating hand assembly of individual components
• Permanent assembly assures that the washer is not dropped, lost or forgotten
• Ease of use with hand drivers and in automated production programs
• Available in most screw and washer combinations

Key Considerations When Choosing SEMS Screws:

• Select the correct configuration for the specific task at hand
• Good design ensures savings in the long run
• Proper finishes perform optimally and are aesthetically pleasing
• Ease of use, particularly in difficult spaces

 

Size

 

Screw Thread		M4	M5	M6	M8
d
b	min	38	38	38	38
dc	Ref.	2.75	3.25	4	5
H	Nominal Size	6.78	8.75	10.71	13.64

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Surface Treatment

Inspection:

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Company Profile

Tengri fasteners Group is an OEM Fasteners Manufacturing, Plating/ Finishing and Industrial Production Company. Over 30 years of manufacturing stainless steel fasteners, industry experience and construction of state-of-art facility. We can offer the most common stainless steel fasteners or specially designed fasteners to exceed our customer's expectations, as our vendors are the best name brands in the industry.

Tengri fasteners group employs more than 3000 employees and consists of one lab and software center, 3 wholly owned subsidiary of Factory and 5 warehouse stocking locations. Our extensive products line and our fast and friendly sales representatives are able to satisfy our customer demands.

As a veritable "one- stop shop", Tengri Fasteners offers same day delivery of in-stock items and a wide a wide variety of supply chair solutions tailored to the needs of our customers. Our custom inventory control programs provide extensive cost saving to our customers.


Factory Images

   
Company Certifications


Customers



Our Service

a)  Good after-sale service, all questions will be replied within 12 hours.

b)  Customized design is available. ODM&OEM are welcomed.

c)  We can provide free sample, consumer should pay the freight first.

d)  Convenient transportation and fast delivery, all available shipping ways could be     applied, by express, air or sea. 

e)  High quality and most competitive price.

f)  Advanced produce and inspecting equipments.

Packaging & Transportation

FAQ

1.Can I order a small list ?

---Of course, you can.

2.What quote do you offer?
---FOB , CIF and others ways according the your needs.
 
3.How transport?
---Sea Freight, Air Freight and others Express Delivery ways for you.
 
4.What is the quality of your products guarantee?
---We have passed ISO9001:2015 Quality Management System Certification, CQM Quality Management System Certification and IQNet Quality Management System Certification, If the quality doesn't  accord the standard, you can exchange the goods for free.
 
5.Do you have after-sales service?
---Certainly,you can contact us at any time.