Premium Material Ensuring Cleanliness in Vacuum Environments

Vented screw
Vented Screws are typically manufactured from low-volatility and corrosion-resistant materials (such as stainless steel 304 or 316L) and undergo rigorous cleaning and degassing processes. Their high-precision through-hole machining is key to ensuring smooth venting. Since even minute gas release can affect results in a high vacuum, the material selection and manufacturing process of Vented Screws must comply with the highest standards of the aerospace and semiconductor industries.

Roof Washer Sealing Screw Holes to Prevent Water Leakage

Roof Washer

The Roof Washer is a specialized washer used for fastening roofing panels (such as corrugated sheets or skylight panels). Its core function is to provide waterproof sealing. It is typically made of weather-resistant rubber or EPDM combined with a metal backing. When the screw is tightened, the washer compresses, tightly filling the gap between the screw and the roofing material, effectively preventing rainwater ingress and ensuring the long-term dryness and integrity of the roof structure.

Aluminum Body, Steel Mandrel Balancing Lightweight and High Shear Strength

MULTI-GRIP BLIND RIVET

The Multi-Grip Rivet typically consists of an aluminum alloy body and a high-strength steel mandrel. The aluminum body offers good lightweight properties and corrosion resistance, while the steel mandrel ensures high pull-force during riveting and high shear strength for the final joint. This aluminum-steel material combination provides a highly cost-effective blind fastening solution while maintaining high performance.

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

 

 

Cold Press Installation No Heat Distortion, Protecting Surface Coating

TSC 8 BLIND PRESSED NUTS

Blind Pressed Nuts are installed using cold press technology, a significant advantage, especially for pre-coated or finished sheet metal. The installation process generates no heat or sparks, thus effectively avoiding heat distortion, coating damage, and secondary surface treatment often caused by welding. This clean, efficient installation method ensures the sheet metal maintains its aesthetic and anti-corrosion integrity after fastening.

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

 

 

Pressure Insertion Cornerstone of Anti-Torque and Structural Stability

TSC 4 SELF-CLINCHING NUTS

The TSC 4 Blind Standoff utilizes Self-Clinching technology, using intense pressure to embed its base serrations or annular ring into the thin sheet metal. This cold-working process forms a permanent, robust mechanical lock within the parent material, providing exceptionally high resistance to torque and shear strength. It ensures the standoff will not loosen or rotate, even under vibration or frequent disassembly/assembly, maintaining the structural reliability of the assembly.

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

 

Turning Parts Precision-Cut Metal Components via Lathe

Metal & Turning Part

 

Turning Parts are components produced using a lathe by rotating the workpiece while a cutting tool shapes the material. This is a fundamental and critical manufacturing process capable of producing parts that are cylindrical, conical, or have complex contours. Turning parts are characterized by high precision, excellent surface finish, and tight dimensional tolerances. They are widely used in shafts, studs, connectors, and various precision instruments.

 

 

Socket Advantage High Torque Transfer and Space Efficiency

Washer Head Thread Insert

 

The Socket Drive allows the screw to transmit extremely high tightening torque while the tool operates within the screw head, without requiring extra external space. Combining this advantage with the flange head design makes the Flange Socket Head Cap Screw ideal for applications that require high-strength, high-reliability connections in confined spaces. It is widely used in automotive, machine tools, and heavy equipment assembly.

 

 

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

Aesthetic and Secure One-Way Installation Without Special Tools

 

ONE WAY SEX BOLTS

The advantage of the One Way Sex Bolt lies in its relatively simple installation, which typically only requires a standard screwdriver or tool to complete the fastening, yet presents a significant barrier to removal. The smooth head of the sex bolt maintains visual aesthetics. It combines the layered fastening capability of conventional sex bolts with the mandatory security of one-way locking, making it an ideal solution for long-term, stable fixation in public areas.

TRUSS COMBO HEAD POST SCREW

TRUSS COMBO HEAD POST SCREW
CHICAGO SCREW

MATERIAL AVALIABLE:
STEEL, STAINLESS STEEL, ALUMINUM, BRASS
★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

    

BAI-C Straight Knurl Sealing Non-Spinning During Tightening

BLIND RIVET NUT-WATERPROOF

FLAT HEAD RIVET, CLOSED END
BEM-C, BAI-C SERIES

 

The Large Flange Straight Knurl Sealing Rivet Nut (BAI-C) adds straight knurling to the foundation of the large flange's high bearing capacity. The straight knurls provide additional resistance to torque, preventing the rivet nut from spinning out during bolt tightening, which is vital for protecting the integrity of the sealant layer. This structure ensures the fastener maintains its waterproof performance even when subjected to heavy loads and torque, making it ideal for demanding outdoor, automotive, or industrial applications.

★ OTHER SIZES, MATERIAL ARE AVAILABLE UPON REQUEST 
★ NOTE: K= KNURLED BODY

Pre-Set Stud Simplifying the Final Product Assembly Process

BOLT (SCREW) RIVET NUT
IN ISO DIMENSION (MM)

The greatest advantage of the Bolt Rivet Nut is its pre-fixed stud. This eliminates the step of manually aligning screw holes and bolts during final product assembly; parts are simply placed over the stud and secured with a nut. It ensures precise thread alignment, significantly speeding up final assembly while offering high pull-out and torque resistance performance. It is suitable for applications requiring exposed threads, such as car body accessories and electronic racks.

★ OTHER SIZES AVAILABLE: 
TOP SCREW IS ABLE TO MANUFACTURE OTHER SIZES OF BOLT (SCREW) RIVET NUT APART FROM THE SIZES SHOWN IN TABLE BELOW. TOP SCREW IS ABLE TO MANUFACTURE BOLT (SCREW) RIVET NUT BASED ON THE STANDARD CYLINDRICAL, FULL HEXAGONAL AND HALF HEXAGONAL BLIND RIVET NUT IN TOP SCREW'S CATALOG. TOP SCREW IS ALSO CAPABLE FOR CUSTOMIZED SCREW (BOLT) RIVET NUT TO FULFILL YOUR REQUIREMENT FROM DESIGNING, RECOMMENDING AND OF COURSE MANUFACTURING.

NOTE 1: GRIP RANGE CAN BE AFFECTED BY PARENT MATERIAL DENSITY AND ACTUAL HOLE SIZE. WE SUGGEST TRIAL INSTALLATIONS TO DETERMINE OPTIMUM GRIP.
NOTE 2: ADDITIONAL UNF FINE THREADS, GRIP LENGTHS AND MATERIALS ARE AVAILABLE. PLEASE CONTACT TOP SCREW METAL CORP. FOR MORE DETAIL.

THREAD SPECIFICATION:
Unified - 2A/21 per ASME B1.1
Metric ­– 6g/21 per ASME 1.21M 

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

 

BOLT (SCREW) RIVET NUT
IN UNC DIMENSION (INCH)

 

Protecting Base Material Reducing the Risk of Deformation and Cracking

 

HALF-HEXAGON RIVET NUT

HBM & HBI SERIES
HALF-HEXAGON WITH BIG FLANGE RIVET NUT FLAT HEAD,ROUND INTERNAL HOLE,OPEN END

 

When installing fasteners into soft materials (such as plastic, fiberboard, or thin aluminum), concentrated pressure can easily cause material deformation or cracking. The Large Flange semi-hex rivet nut design disperses the pulling force more evenly by increasing the contact area, thereby reducing the risk of damage to the parent material. Combined with the anti-torque property of the semi-hex shape, it effectively protects the structural integrity while ensuring a secure connection.
★ Custom finishes, sizes, and material options are available upon request.
★ OTHER SIZES, MATERIAL ARE AVAILABLE UPON REQUEST

 

AHBM & AHBI SERIES
HALF-HEXAGON WITH SMALL FLANGE RIVET NUT
FLAT HEAD,HEX INTERNAL HOLE,OPEN END

 

Half-hexagon Rivet Nut HBM&HBI Series

Stable Support High-Precision Spacing and Anti-Torque Lock

TSC 5 SELF-CLINCHING LOCK NUTS

The TSC 5 Standoff provides a stable and precise separation distance between panels, making it ideal for securing printed circuit boards (PCBs) and electronic components. Like all self-clinching fasteners, it uses pressure to tightly lock its serrations or annular ring structure with the parent material, providing exceptionally high resistance to torque and shear force. This robust connection ensures high structural stability for internal components of electronic devices under vibration or stress.

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

 

Modular Connection Reusable Without Damaging Materials

MALE FEMALE RIVET

Unlike single-use conventional rivets, some Japanese Male Female Rivets feature a threaded design that allows for repeated disassembly and reassembly without damaging the base material. This offers great convenience for products requiring periodic maintenance, component replacement, or modular design. It combines the flexibility of traditional screws with the quick installation advantage of rivets, making it a premium choice for enhancing product design flexibility and maintenance efficiency.

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

 

  

High Versatility Simplicity and Convenience of the Slotted Drive

SLOTTED TRUSS HEAD SEX BOLTS

The large head design of the Slotted Truss Head Sex Bolt is not just decorative; its crucial function is panel protection. When the screw is tightened, the large head distributes pressure evenly over a wide area, preventing the screw head from embedding or cracking softer base materials. Often made of brass or nickel-plated material, it offers good corrosion resistance and luster, making it a premium connector for leather goods, furniture, and art displays.

 

Slotted Advantage Efficient Cutting and High Pull-Out Strength

SELF TAPPING THREAD INSERTS
SLOTTED SERIES

MATERIAL AVAILABLE: 
STEEL, STAINLESS STEEL 303 (A1), STAINLESS STEEL 316 (A4 / 18-10), BRASS C3604

The Slotted Series Self Tapping Insert utilizes its slotted structure to efficiently cut into the base material during installation, creating a clean and precise internal thread. This ensures a tight, gap-free mechanical lock between the insert and the parent material, providing extremely high pull-out strength and excellent resistance to vibratory loosening. The slotted design also facilitates chip evacuation. It establishes a robust and reliable thread in materials ranging from aluminum housings to thermoplastics.

★ OTHER SIZE, MATERIAL ARE AVAILABLE UPON REQUEST

 

SELF TAPPING THREAD INSERTS - SLOTTED SERIES