Manual Adjustment Bolt Captive Slotted Screws Knurled Head Thumb Screw with Waisted Shank

• Customization: Available
• Grade: A2-70 A4-70
• Head Type: Knurled Head
• Model NO.: GB839
• Material: Stainless Steel
• Standard: DIN, GB
• Product Name: DIN912 Screws
• Drawing: Accept
• Sample: Free Sample When Is in Stock
• Thread: Unc
• Service: Custom-Made Service
• Color: Silver White
• Type: Cheese Head
• Groove: Hexagon
• Connection: Common Bolt
• Head Style: Chess
• Transport Package: Plastic Bags and Cartons
• Specification: M3-M30
• Trademark: Tengri
• Origin: China
• HS Code: 7318160000
• Production Capacity: 3000000 Pieces/ Month
• Package Size: 28.00cm * 27.00cm * 18.00cm
• Package Gross Weight: 0.500kg

Product Description

Manual Adjustment Bolt Captive Slotted Screws Knurled Head Thumb Screw with Waisted Shank

Standard	GB 839
Diameter	#2-1/2" & M3-M30;Customized
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.

Product Description

What is captive screw: 

               A captive screw is designed to prevent this from occurring. It can freely rotate within the first component, with some axial movement, but it's unable to separate from it. Captive screws are used when fasteners must remain attached to equipment, such as in cover panels. They are a requirement for several machinery safety standards.

            

Drawings

Screw Thread d					M3	M4	M5	M6	M8	M10
P		pitch			0.5	0.7	0.8	1	1.25	1.5
ds		max			2	2.8	3.5	4.5	5.5	7
		min			1.86	2.66	3.32	4.32	5.32	6.78
dk		before knurled	max		5	8	9	11	14	17
			min		4.82	7.78	8.78	10.73	13.73	16.73
k		max			4.5	6.5	7	10	12	13.5
		min			4.32	6.32	6.78	9.64	11.57	13.07
n		Nominal Size			0.8	1.2	1.2	1.6	2	2.5
		max			1	1.51	1.51	1.91	2.31	2.81
		min			0.86	1.26	1.28	1.66	2.06	2.56
t		min			0.7	1	1.2	1.4	1.9	2.4
b		thread length			4	6	8	10	12	15
r		min			0.1	0.2	0.2	0.25	0.4	0.4
h					1	1.5	1.5	2	2.5	2.5
B		≈			1	1.5	1.5	2	2.5	3
R		≈			0.5	0.75	0.75	1	1.25	1.5
c					1	1.2	1.6	2	2.5	3
c1					0.3	0.3	0.5	0.5	0.8	0.8

 

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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.

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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.