Product Name : Black oxide cheese head six lobe slotted sems machine screw
Material : Carbon steel,Iron,Stainless steel ,Brass copper,Alumilum,Zinc Alloy,Bronze
Specification : Including and over M2, the length according to customer's requirements
Manufacture Process : Cold forge heading/Secondary machine/Clamping/Threading/Surface treatment/(Automatic) testing/(Automatic) Packing/Shipping
Surface finishing : Zn-plated,Ni-plated,Passivated,H.D.G.(hot dip galvanizing),Chromate,Chorm plated,Blackoxide, Polish,Plain,Coppercoated,bronze plating,Dacromet,anodic oxidation etc.
Standard : ISO,GB,DIN,JIS,ANSI,BSW,IFI
Quality authentication : ISO 9001:2015, ISO/TS16949:2009, over 10 patents, the national high-tech enterprises.
Grade : 4.8 6.8 8.8 10.9 12.9
Brand : Yuhuang
Thread : Coarse, fine
Used : Building industry machinery ,furniture
SEMS combines two normally seperate parts-typically a screw and a washer- into one permanently pre-assembled cost saving component. Washers are hel in place under the screw head by the rolled threads; they will not fall off and are free to rotate .
* Speeds: production by eliminating hand assembly at the work station
* Permanent: Capturing of washer insures that it will never come off or be left off your assembly
* Adapts easily to automated feeding devices and driving tools
* Available in any combination of screw type, head style, washer and thread configuration
* Production Range: M2.5 (#2) ~ M 12 ~ (1/2". Length: 4mm (5/32") ~ 160mm (6")
* ISO 9001 certificated manufacturer & exporter
Coarse threaded Screws with captive curved spring lock washer DIN6900
Examples of screw and washer assemblies
Figure 1. Assembly with screw threaded approximately up to the head
Figure 2. Assembly with screw unthreaded portion of shank