Combination screw

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组合螺钉 I: Assembly screw type:

1. with two components assembly (Assembly screw with flat washer, or teeth washer or elastic washer)

2. with three components assembly (Assembly with screw and elastic washer and flat washer)

II: Function of assembly screw

The assembly screw has the characters of anti-slippery and anti-loosing.

Standard:	GB international etc
	BINDING fillister head、BUTTON Button head、BRAZ The old R Botou、FLAT Flat、OVAL Half round head、PAN Pan head、ROUND Round、TRUSS Mushroom head、HEX Six corners first class

Driver Type	PHILLIPS cross slots, POZIDRIV meters, SLOTTED- slot, slot TRIANGLE, SQUARE square triangular groove groove, groove, angle HEX six SIX-LOBE, TRI-WING oblique groove groove plum ya
Thread size range :	2mm-12mm
Material:	SWRCH10-SWRCH45,alloy,or low carbon-alloy(Boron,Manganses and Chrome) Teeth washer：65Mn SWRCH35、SWRCH45 Washer ：SPCC
The mechanic performance refers to standards:	GB/T3098.1-GB/T3098.17
Referred standard:	GB/T9074.1-GB/T9074.30