304 Stainless steel countersunk head tapping screws M2-M3 100pcs

$6.33


Bulk price: $4.75 for ordering quantity >= 100

Bulk price: $4.12 for ordering quantity >= 1000


Material 304 Stainless steel
SIZE M2.2*5 , M2.2*6 , M2.2*8 , M2.2*10 , M2.2*12 , M2.2*16 , M2.2*20 , M2.6*6 , M2.6*8 , M2.6*10 , M2.6*12 , M2.6*16 , M2.6*20 , M3*6 , M3*8 ,  M3*10 , M3*12 , M3*16 , M3*20 , M3*25 , M3*30 ,  M3*35 , M3*40 , M3*45
Shape Sunk

Product detail

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screw detail

 

Product size

screw detail

thread diameter (mm) 1 1.2 1.4 1.7 2 2.2 2.6 3 3.5 4 5 6
head diameter (mm) 1.75 1.82 1.93 3.27 3.7 4.2 4.6 5.3 6.5 7 8.7 11.8
head thickness (mm) 0.65 0.7 0.75 1.13 1.21 1.5 1.7 2 2.5 2.6 3 3.8
sunk angle 90 90 90 90 90 90 90 90 90 90 90 90

 

Chemical composition

group C Si Mn P S Cr Mo Ni Cu Feature
304-A2 % 0.1 1 2 0.05 0.03 15-20   8-19 4 The work hardening rate is moderate, which is suitable for general cold processing and stretching, cold working performance is good, generally used for six angle screw, nut and washer products.
316-A4 % 0.08 1 2 0.05 0.03 16-18.5 2-3 10-15 1 Corrosion resistance is more than 304, especially suitable for sea water and chemical media, more corrosion resistance and pitting corrosion resistance

 

Mechanical properties

Type group Performance level Screw nominal diameter tensile strength mpa/mm2 elongation mpa/mm2 Breaking elongation mpa/mm2
austenite A2,A4 50 <=39 500 210 0.6d
austenite A2,A4 70 <=24 700 450 0.4d
austenite A2,A4 80 <=24 800 600 0.3d

 

Don't want to let your screw become rust several years later?

Choose stainless steel screw now!

rust screw

 

Questions

 

Why stainless steel is magnetic?

304 stainless steel is austenitic stainless steel, When the austenite is in the cold working process, there are small amount of austenite transform to martensite . Martensite is magnetic, so the 304 stainless steel is non - magnetic or micro - magnetic.

 

How to identify authentic 304 stainless steel products?

Special detection potion detection, if colour is not changed.It's authentic 304 stainless steel.

 

What are the most commonly used stainless steel?

A. 201 stainless steel  B. 304 stainless steel  C. 316 stainless steel

 

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