Achieve permanent, vibration-resistant joints in sheet metal, plastic, or timber without the need for pre-tapping. Our Stainless Steel Cross Socket Csk Head Self-tapping Screws combine premium 18-8 (A2) stainless steel with a sharp Type-AB thread and a precise 90° countersunk head for a flush, professional finish.

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Stainless steel CSK head Self-tapping screws

Description:

Name	Stainless steel CSK head Self-tapping screws
Place of Origin	Jiaxing, Zhejiang, China
Dimension	custom
Surfance	plain
Material	stainless steel
Standard	M5-M20
Non-standards	OEM is available, according to drawing or samples
Samples	Samples are free.
Package	Pack the box first and put it in the carton, or according to customers' requirement.
Payment	T/T or L/C

304 Chemical Composition(%)
Grade	C≤	Mn≤	Si≤	S≤	P≤	Cr	Ni	N≤
	0.08	2	0.75	0.03	0.045	18.0-20.0	8.0-10.5	0.1

304 Mechanical property
σb≥	σ0.2≥	δ5 (%)≥	Hardness(HB)(kgf/mm2)]
520(Mpa)	205(Mpa)	40%	≤187 HRB≤90 HV ≤200

产品缩略图ctb.jpg

螺纹规格			ST2.2	ST2.9	ST3.5	(ST3.9)	ST4.2	ST4.8	ST5.5	ST6.3
P	螺距		0.8	1.1	1.3	1.3	1.4	1.6	1.8	1.8
a	最大值		0.8	1.1	1.3	1.3	1.4	1.6	1.8	1.8
dk	最大值=公称		4.3	5.5	6.8	7.5	8.1	9.5	10.8	12.4
dk	最小值		4	5.2	6.44	7.14	7.74	9.14	10.37	11.97
k	≈		1.3	1.7	2.1	2.3	2.5	3	3.4	3.8
y	最大值	C型	2	2.6	3.2	3.5	3.7	4.3	5	6
y	最大值	F型	1.6	2.1	2.5	2.7	2.8	3.2	3.6	3.6
槽号			1	1	2	2	2	2	3	3
M1	≈		2.5	3	4.2	4.6	4.7	5.1	6.8	7.1
M2	≈		2.4	2.8	4	4.2	4.4	5	6.3	7
千件钢制重≈kg			-	-	-	-	-	-	-	-

Packaging & Shipping

Standard export packing or According to customer's requirement

Our Services

1.We^,ll always be online whenever you look for us.

2..The customer is god, and we always focus on the customer's point of view

3.We produce your order strictly by your request. If the quality was not acceptable, we will refund to you.

FAQ

Q:What is your main products?

A:Fasteners, Bolt, nut, screws, washer, threaded rod, anchors, self tapping screws, self driling screws, stainless steel plate, etc.

Q: What is your delivery time?

A:It depends on if we have stock or not, if we have stock goods, we can delivery within 2 days after receive the payment. And normally our production is in 20-30 days for one container (20-26 ton) products.

Material: Solid 18-8 (A2) stainless steel for superior corrosion & chemical resistance—ideal for marine, kitchen, and outdoor applications.
Drive: Pozi (cross) recess—offers higher torque transmission and reduced cam-out compared to standard Phillips.
Head: countersunk (CSK) 90° head sits flush with the mating surface; perfect for hinges, brackets, and architectural hardware.
Thread: Self-tapping Type-AB (sheet-metal) point; cuts its own mating thread in sheet metal, plastics, or hardwoods up to 2 mm thick.
Finish: Bright polished passivation for extra rust protection and an attractive appearance.
Strength: Core hardness HV 220-300; meets DIN 7982 / ISO 7050 mechanical requirements.
Temperature Range: –40 °C to +300 °C without loss of corrosion resistance.
Reusable: Threads remain intact after multiple removal cycles.

Diameter: #4 – #14 (M2.9 – M6.3)
Length: 6 mm – 50 mm (1/4" – 2")
Head Ø (max): 2 × nominal diameter
Standard: DIN 7982 C / ISO 7050 C
Certifications: RoHS, REACH, SGS salt-spray 1,000 h report available.

Small box: 100 pcs with resealable bag & EAN label.
Bulk: 5,000 pcs in strong carton with inner plastic liner.
Custom laser-logo head or colored patch available from 10 k pcs.

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ABOUT US

Jiaxing Goshen Hardware CO., LTD is Located at Economic Development Area, Jiaxing City, Zhejiang Province, China. We specialise in suppling kinds of stainless steel, high strength and low carbon steel fasteners with excellent quality and reliable price. Our fasteners according to a number of internationally recognised standards including DIN, ANSI/ASTM, BS, JIS, GB etc.