Pan Cross Recessed Head Combined Sems Screws Phillips Drive with Flat Washer and Spring Washer Assembly Sems

Product DescriptionSEMS screws (or SEM screws) are machine screws with lock washers pre-attached to save users assembly time. They combine two separate parts into one pre-assembled, low cost fastener. With washers under the head, SEM fasteners allow for fast installation, permanence, and easy adaptability to many applications. When using SEMS machine screws, there's no need to worry about the washer going missing; this, in turn, helps extend product life and ensure reliable performance.NameSS304 SS316 DIN pan head Sems Screw with both spring and flat washersHead Typeflat head,pan head, hex head, truss head, button head, round head, slice head, oval head and so onSizeM1.6-M16Thread Typemachine thread, fine thread, coarse thread, hi-low thread, cutting thread, reverse thread etc.Materialcarbon steel, stainless steelGrade201, 304, 316, 410SurfacePlain, Galvanzied, HDG, Nickel Plated, Ruspert coating, power coated and so onStandardGB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etcNon-standardsOEM is available, according to drawing or samplesSamplesSamples are free.Packagebulk packing, small box packing, plastic bag packing, plastic box packing or as customers' requirement.PaymentTT, L/CDetailed PhotosCompany Profile Fastener Group is a leading manufacturer of stainless steel fasteners in China. It  started with the establishment of Suzhou FAST Hardware Co., Ltd. in 2005. At present, we have 3 manufacturing bases in Jiangsu, Anhui and Guangdong. We are specialized in the production of various quality screws, including: tapping screw, machine screw, wood screw, Hex Socket cap screw, chipboard screw and other high-quality precision screws. They are widely used in various industries such as electronic communications, aerospace & defense, intelligent equipment, medical equipment, construction etc. All the products have been exporting to Europe, USA, Australia, Southeast Asia etc. Our annual production capacity is more than 45,000 tons, and keep the continuous increasing. For standard fasteners, we have sufficient stocks with more than 12 thousand specifications. Fastener Group is certified by IS09001 & ISO14001. Depending on the leading system of ERP, APS, MES (Manufacturing Execution System), QMS (quality management system), WMS (warehouse management system), we can provide products of consistent quality in the soonest delivery time. MAIN PRODUCTMachine Screws Spec: DIN, ISO, ANSIB, JIS, Drawing, Sample                  Standard: DIN7985, DIN965, DIN84, DIN963, ISO14583,  ISO14581, ISO14579, ISO14584                                               Head: Raised cheese Hd., Countersunk Hd., Pan Hd.,                                   Raised Countersunk Hd., Cap Hd.           Recess:      Cross Recessed, Hexalobular                          Diameter :    M2 ~ M12 ; #2 ~ 1/2''                                Length:          3 ~ 60mm ; 5/32'' ~ 4''                              Material :    A2, A4, SUS 304, SUS 316 and carbon steelChipboard Screws                                                                                                 Spec:         DIN, ISO, ANSIB, JIS, Drawing, Sample  Standard:  DIN7505, DIN7505B,                                          Head:        Pan Hd., Countersunk Hd., Reinforced      Countersunk Hd., Horn  shape Hd.                                            Recess:     Cross Recessed, Hexalobular.                          Diameter:      ST3.5 ~ST6.3 ; #6 ~ #14                                  Length:         13 ~ 80mm ; 1/2'' ~ 3''                                  Material:    A2,A4, SUS410,SUS 304,SUS 316 and carbon steelSocket Head Screws Specification: DIN, ISO, ANSIB, JIS, Drawing, Sample  Standard:  DIN912, DIN7380-1, DIN7380-2, DIN7991,                           DIN7984, ISO14580, Cap Hd., Button Hd., Hexagon Hd., Countersunk Hd., Thin Cap Hd.                                        Recess:    Hexagon, Hexalobular, phi lips, socket, torx              Diametre:  M2 ~ M16 ; #2 ~ 5/8''                                    Length:      4 ~ 120mm ; 5/32'' ~ 4-3/4''                                  Material:   A2, A4, SUS 304, SUS 316 and Carbon Steel  Self Tapping Screws   Spec:         DIN, ISO, ANSIB, JIS, Drawing, Sample  Standard:  DIN7981, DIN7982, DIN7983, DIN968,                                      ISO14585,  ISO14586, ISO1479, ISO7053,            Head: Pan Hd., Countersunk Hd., Raised Countersunk Hd.,                           Hexagon Hd.                                              Recess:   Cross Recessed, Hexalobular                             Dia.:        ST2.2 ~ ST6.3 ; #2 ~ #1/4                             Length:   6 ~ 60mm ; 1/4'' ~ 2-1/2''                                Material:   A2, A4, SUS 304, SUS 316 and carbon steelSelf Drilling Screws Spec:         DIN, ISO, ANSIB, JIS, Drawing, Sample  Standard:  DIN7504K, DIN7504M, DIN7504O, DIN7504R,       Head: Hexagon Hd., Pan Hd., Countersunk Hd.,                 Raised Countersunk Hd.                                                R