Screw Factory Wholesale Stainless 304 Carbon Steel Self Tapping Thread Truss Head Screws

• Customization: Available
• Material: Carbon Steel
• Shape of Head: Hexagon
• Model NO.: screw
• Surface Finishing: Zinc Plated
• Certification: CE
• Customized: Customized
• Length: From 19mm to 254mm
• Diameter: M3.5(#6) M3.9(#7) M4.2(#8) M4.8(#10) M5.5(#12) M6.
• Drive Type: Phillips/ Slotted Drive
• Surface Treatment: Yellow/White Zinc Plated; Nickel Plated; Dacromet
• Feature: Suitable for Wood Material, Also Called Wood Screw
• Application: for The Fixing of The Wall Plate, No Drilling Can
• Transport Package: Bag/Box/Carton
• Origin: Tianjin
• HS Code: 731814
• Production Capacity: 20000tons/Year
• Package Size: 25.00cm * 25.00cm * 25.00cm
• Package Gross Weight: 1.000kg

Product Description

 

Product Description

  

Product Name:	Cross Recessed Pan Head Tapping Screws With Collar DIN 968 - 2008
Standard:	DIN 968 - 2008
Material:	Carbon steel and stainless steel
Size:	Reference standards and according to customer requirements
Finished:	Zinc Plated, Hot Dip Galvanized Steel, Dacromet, Nickel Plated, Black Oxide, Plain
Delivery time:	Normally in 30-40 days.

Thread Position	External	Thread Type:	Self-Tapping
Internal Driving:	Phillips / Pozidriv	External Driving:	Round Head
Locking Type:	Collar	Shank:	/
Point:	/	Mark:	As required

While other screws and bolts require holes with threads, tapping screws create their own threads.

 

Pointed screws are the most common tapping screw. They have a pointed end to penetrate thin material such as sheet metal, and soft material such as wood and drywall. In thicker material, they generally need a starter hole.

 

Thread-forming and thread-cutting screws create reusable threads in metals and plastics. They require a drilled or punched hole to install. Thread-forming screws press threads into material for a tight, vibration-resistant assembly, while thread-cutting screws require less driving torque and cause less stress on material than thread-forming screws.

 

Drilling screws save you time and effort by drilling their own holes, creating reusable threads, and fastening material in a single operation.

 

Material

316 Stainless Steel-Our most corrosion-resistant stainless steel, it has excellent resistance to chemicals and salt water and may be mildly magnetic.

18-8 Stainless Steel-Has good chemical resistance and may be mildly magnetic.

410 Stainless Steel-Stronger and more wear-resistant than 316 and 18-8 stainless steel, it is mildly chemical resistant and magnetic. Not for use with aluminum.

Brass-Corrosion resistant in wet environments, electrically conductive, and nonmagnetic.

Aluminum-One-third the weight of steel, aluminum resists corrosion in wet environments and is nonmagnetic.

Steel-This general purpose metal is often plated with zinc for corrosion resistance in wet environments.

Finish

Zinc Plated and Black Zinc-Plated-Provide corrosion resistance in wet environments.

Black Oxide and Black Phosphate-Offer corrosion resistance in dry environments.

Black Ultra-Corrosion-Resistant Coated-More corrosion resistant than zinc plating and provides a decorative finish that won't rub off.

Chrome Plated-Bright and attractive. Offers corrosion resistance in wet environments.

Nickel Plated-A decorative finish that's more corrosion resistant than zinc plating and less expensive than chrome plating.

Ultra-Corrosion-Resistant Coated-Resists corrosion better than zinc plating and minimizes reactions between dissimilar metals.

 

 

Product Parameters

 

 

How to Read a Screw Size

The screw size listed for thread-forming, thread-cutting, and drilling screws is the size of the threads they create.

 

Nominal Length L - 4.5 6.5 9.5 13 16 19 22 25 32 38 45 50 Tips: select Nominal Length L and get Weight.

Thread Size d

ST2.9

ST3.5

ST4.2

ST4.8

(ST5.5)

ST6.3

P		Pitch
a		max
dk		max=nominal size
		min
k		max=nominal size
		min
c		max
		min
r		min
R		≈
Socket No.
M1		From H	Ref.
Penetration depth		From H	min
			max
M2		From Z	Ref.
Penetration depth		From Z	min
			max
y		Ref.	Type C
			Type F
			Type R

1.1	1.3	1.4	1.6	1.8	1.8
1.1	1.3	1.4	1.6	1.8	1.8
7.5	9	10	11.5	13	14.5
6.92	8.42	9.42	10.8	12.3	13.8
2.35	2.6	3.05	3.55	3.8	4.55
2.1	2.35	2.75	3.25	3.5	4.25
0.8	0.9	1.1	1.35	1.6	1.8
0.6	0.7	0.9	1.05	1.2	1.4
0.1	0.1	0.2	0.2	0.25	0.25
3.8	4.6	5.8	6.6	7.8	8.2
1	2	2	2	3	3
3.0	4.2	4.6	5.0	6.5	7.1
1.35	1.4	1.8	2.26	2.49	3
1.8	2.03	2.46	2.87	3.15	3.66
2.9	3.9	4.3	4.7	6.2	6.7
1.58	1.47	1.88	2.28	2.51	3.02
1.83	1.93	2.34	2.74	2.97	3.48
2.6	3.2	3.7	4.3	5	6
2.1	2.5	2.8	3.2	3.6	3.6
/	2.7	3.2	3.6	4.3	5.0

Weight per 1000 steel products(≈kg)

-

-

-

-

-

-

1), Length of incomplete thread as in DIN EN ISO 1478. 2), Material: a)Steel, Hardness class (material): St. Standard DIN EN ISO 2702 b)Stainless steel, Hardness class (material): A2-20H, A4-20H, A5-20H.Standard DIN EN ISO 3506-4

 

 

 

Certifications

 

 

 

FAQ

Q1: Are you the trading company or manufacturer?
A1: We are a leading, professional and premium screw manufacturer and exporter from 2008.  You can furtherly know our company via YouTube and WeChat Channel, or online visit our factory via Live Video Call at WeChat or WhatsApp, or visit our factory by yourself.
Q2: What are your Hot Sale Products?
A2: We mainly produce and export premium quality Drywall screws, Chipboard screws, Self Drilling Screws, Self Tapping Screws,  Pan framing head self drilling screw, Pan framing head self tapping screw,  Gypsum Screw and Roofing Screws etc.
Q3: What standard do you produce screws?
A3: We can produce according to DIN standard, ISO standard, GB standard, ANSI standard, JIS standard, Manufactuer standard and customer required standard.
Q4: Can you accept OEM orders?
A4: Yes, we can accept OEM or ODM orders and customized orders.
Q5. Can you provide Test Report?
A5: Yes, we can provide Factory Test Report or Manufacturer Test Report for you from our company. And you also can entrust the Third Party to test your order before shipping like SGS, BV etc.
Q6: Can you provide technical support and after sales service?
A6: Yes, we can provide you the technical solution and after sale service for fastener Products.
Q7. Can you provide samples?
A7: Yes, We can supply free samples for customers.
Q8: What is your payment terms ?
A8: By T/T, L/C, Paypal etc.
Q9: Can you finish customs clearance for order?
A9: Yes, we can finish export customs clearance for your order in our country. We also can finish import customs clearance in destination country according to customers' requirement.
Q10: How do we contact you?
A10: You can contact us at your any time via Email,  WeChat, WhatsApp, Skype, Made-in-China Messenger and Phone etc. And we will reply you within 24 hours.