What Is Sems Screw?
A sems screw, also called a pre-assembled screw and washer, usually consists of a machine screw with a flat washer and a spring washer assembly.
As a leading manufacturer of Sem screws, T&Y Hardware focuses on the production and supply of full types screws, providing global customers with fastening solutions with high performance, high stability and high cost performance. With strict production control and efficient supply chain management, we ensure that each batch of products has stable quality and excellent price, helping customers optimize procurement costs and enhance market competitiveness.
Sems Screw By Material
We supply stainless steel (SUS201/SUS304/SUS316), carbon steel (grade 4.8/8.8/10.9), brass (H62, etc.), aluminum alloy (6061/7075), titanium alloy (Gr2/Gr5) and other high-grade materials to meet customers’ different needs such as anti-rust, high strength, lightweight, and corrosion resistance.
Metric Stainless Steel Sems ScrewsDimensions: M1.6 M2 M2.5 M3 M4 M5 M6
Length : 3mm to 40 mm
Carbon Steel Sems Machine ScrewsDimensions: M1.6 M2 M2.5 M3 M4 M5 M6
Length : 3mm to 40 mm
Brass Double Washer Sems ScrewsDimensions: M1.6 M2 M2.5 M3 M4 M5 M6
Length : 3mm to 40 mm
Sems Screw By Feature
T&Y Hardware provides professional sems screw customization services. Different head shapes (such as round head, countersunk head, pan head, truss head, oval head, cheese head, hex head, etc.) and drive types can be selected according to customer needs (including cross groove, flat groove, socket groove and torx groove, etc.) to ensure adaptation to diverse assembly scenarios and performance requirements.
Phillips Pan head Sems ScrewIt features a cross-groove drive and is pre-installed with flat washers and spring washers to prevent loosening and provide shockproofing. It is suitable for assembly scenarios such as electrical appliances, electronic equipment, and light sheet metal, providing convenient installation and reliable fixation.
Size: M1.6 M2 M2.5 M3 M4 M5 M6
Length : 3mm to 40 mm
Hex Head Sems BoltThe outer hexagonal head design can be directly fastened with a wrench or socket. It comes standard with a flat pad + spring pad combination. It has a large size range and high strength. It is widely used in high-torque applications such as machinery, steel structures, and heavy equipment.
Size: M3 M4 M5 M6 M8 M10 M12
Length: 8mm to 80mm
Hex Cross Recess Sems ScrewIt has dual installation methods of hexagonal wrench drive and cross-slot screwdriver drive, and has high flexibility. It is suitable for working conditions where space is limited or tool switching needs to be quick, such as automation equipment, maintenance operations, etc.
Size: M3 M4 M5 M6 M8 M10
Length: 6 mm to 60 mm
Torx Slotted Sems ScrewIt adopts the Star Drive design and requires a special wrench for installation. It has good tamper-proof performance. It is commonly found in pan head/countersunk head styles and is used in precision instruments, safety equipment, and other fields to prevent non-professional disassembly.
Size: M2 M2.5 M3 M4 M5 M6 M8
Length: 4 mm to 60 mm
Socket Head Sems ScrewHex socket drive, with countersunk head/pan head/flange head design, pre-installed double metal washer. It is suitable for industries with strict assembly process requirements, such as automobiles, CNC machinery, aerospace, etc.
Standard： ANSI/ASME B18.3,BS2470,DIN912
Size: M2 M2.5 M3 M4 M5 M6 M8 M10 M12
Length: 4 mm to 70 mm
The screw combination driven by a slot, the head is usually a pan head or a countersunk head, and it needs to be installed with a slotted screwdriver. It has a simple structure and strong versatility.
Standard： ISO 1207, ISO 1580, ISO 2009
Size: M2 M2.5 M3 M4
Length: 5 mm to 12 mm
Why Choose Sems Screws From T&Y?
- Strict quality control: Each batch of products has passed ISO 9001 quality certification, ensuring accurate matching of dimensional tolerances and stable and reliable mechanical properties.
- Customized service: Supports on-demand adjustment of material, surface treatment, and head design, and accepts customized production of non-standard sizes.
- 22 years of fastener supplier: 22 years of focusing on fastener R&D and manufacturing, serving more than 900 customers around the world, and winning long-term trust from customers with reliable quality.
- One-stop fastener procurement: The products cover a full range of fasteners such as screws, washers, nuts, studs, anchors, stamping parts, etc. to meet your diverse procurement needs and significantly improve procurement efficiency.
- Our certificate
- Strength grade
- Material
- Surface Treatment
Class 6/8/10
ASTM 2H/2HM
Astm grade a 563 A/ B /C
1. Carbon steel: C1006,C1008,C1010,C1018A,C1022,C1035K,C1045K.etc
2. Stainless steel: SS201, 202, SS301, SS302,SS303,SS304,SS316,SS316L, SS347, SS410,SS416,SS420,SS430,SS435, SS904, etc
3. Duplex Stainless Steel: S32750, S32760, S2205, S2507
4. Steel:C15,C35,C45(K1045)S45C,C46(K1046),C20,etc
5. Copper:Brass(C3602,C3604,H59,H62,H65,H68,H70,H90,etc. Phosphor bronze, Silicon bronze, Red copper, Beryllium copper, and Copper, etc.
6. Iron: 12L13,12L14,12L15 etc.
7. Aluminium:AL6061,AL6063,7075 etc.
8. Titanium or titanium alloy: TAD, TA1-TA8, TB2, TC1-TC10, etc.
9.Alloy steel:SCM435,10B21,40Cr, Inconel 600, Inconel 625, Inconel 718, Monel400, K500 etc.
10. Silver or silver alloy:AgCu3,agCu7.5,AgSn3-5,AgPb0.4-0.7,AgPd3-5,AgNi10etc.
Plain, Black, Zinc Plated(ZP), Yellow Zinc Plated (YZP)and Hot DIP Galvanizing(H. D. G. ),
Dacromet, Nickel Plated, Brass Plated, Copper plating, black oxidation, passivation, polishing，power coated and so on
Related Product
Regarding the lead time, the standard lead time for standard size stainless steel SEM screws is 10-15 working days. If special specifications are required to be customized, the production period will be extended to 20-30 working days.
Welcome to try small batch trial orders, bulk ordering has more price advantages.
30% T/T in advance, and 70% of the balance should be paid against the copy of the bill of lading. If the order amount is less than USD 1000, it is recommended to pay 100% in advance to reduce bank charges.
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