combination m4 sem screws with square washer for office chair

1)                            Screws Products Details:

Material:

  .  Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS43;

  .  Steel:C45(K1045), C46(K1046),C21;

  .  Brass:C36000(C26800),C37700 ( HPb59), C38500( HPb58) C27200CuZn37), C28000         (CuZn41);

  .  Bronze: C51000, C52100, C54401, etc;

  .  Iron: 1213, 12L14,1216;

  .  Aluminum: Al6061, Al6064 etc;

  .  Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1046;

  .  Alloy steel: SCM435,10B22.

Specification & gauge:  

M0.8-M10.

Surface Finishing:

Zn-Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc.

 Heat Treatment:

Tempering,Hardening,Spheroidizing,Stress Relieving.

 Standard:

 ISO,GB(China),DIN,JIS,ANSI,BSW.

 Manufacture  Process:

Heading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/Shipp

Sample Availablity:

we can make sample within 7 days free of charge. if there is available tool for us.

 Lead time:

10-15 working days as usual,It will based on the detailed order quantity.

 Carton size:

28*20*22 cm &28*20*16 cm.

Pallet size:

110*100*90 cm.

 Warranty:

 we confirm our goods will satisfy yr request of 100%,and have 18 month warranty.

After sales service:

 we will follow up goods for every customer and help solve problem after sales.

Packaging Details:

  cartons + plastic bags, then put on pallets, or according to the your requirement !