Non-Standard T-Shaped Belt With Flat Washers For Tail Fixation Screws

Product introduction

This product is a typical custom-made non-standard screw. The head adopts a T-shaped design and can be accurately embedded in the T-shaped slot to achieve rapid positioning and anti-rotation. It is equipped with a flat washer to increase the contact area and prevent scratches on the workpiece. The tail bundle structure facilitates rapid introduction into the threaded hole and improves assembly efficiency. As special head screws, the products are made of alloy steel or carbon steel. They can reach high strength levels of 8.8-12.9 after heat treatment. The surface can be galvanized or blackened as required. They are widely used in guide rails and tooling fixtures in industrial automation, automobile manufacturing and other fields. They are an important component of automotive parts fasteners.

 

We focus on customizing non-standard fasteners. T-head size, tail length, and strength level can all be customized according to drawings. As customized special shape fastener parts, we support small batch samples and large batch supply. Welcome to inquire about drawings.

 

Product features

T-shaped head design: The head has a T-shaped cross-section and can be accurately embedded in T-shaped slots or guide rails to achieve rapid positioning and anti-rotation functions without the need for additional positioning pins, greatly improving assembly efficiency;

Integrated/movable flat washer: A flat washer is installed under the head to increase the contact area with the workpiece, disperse the pressure, prevent the surface of the workpiece from being crushed or scratched, and has a certain anti-loosening effect;

Bundle guide structure: The tail adopts a tapered or cylindrical bundle tail design. The front end of the thread has no teeth or has a guide taper, which facilitates rapid alignment of threaded holes and prevents misaligned teeth. It is especially suitable for blind holes or automated assembly;

Composite function integration: Integrate the three functions of positioning, pressure dispersion, and guidance into one, reducing the number of parts and simplifying the assembly process;

High strength and durability: The whole is made of high-strength materials, which can reach level 8.8, 10.9 or 12.9 after heat treatment to meet the needs of heavy-duty connection.

 

Materials and application fields

Alloy steel (40Cr, 35CrMo, SCM435, SCM440, etc.): It has excellent comprehensive mechanical properties and can reach strength requirements of grade 8.8 to grade 12.9 after heat treatment. It is an ideal material for manufacturing automotive parts fasteners and industrial equipment;

Carbon steel (10B21, 35K, 45#, etc.): suitable for strength requirements of grade 8.8 and below, economical cost;

Stainless steel (304, 316, 410, etc.): suitable for corrosive environments, such as chemical equipment, marine engineering, etc.;

Surface treatment: zinc plating, nickel plating, blackening, Dacromet, Jiumet and other treatments can be provided according to needs.

 

Application areas:

Industrial automation: positioning and fastening of T-slot worktables, linear guide rails, and module slides;

Automobile manufacturing: body welding fixtures, tooling fixtures, automotive parts fasteners in assembly line guide rail systems;

Mechanical equipment: guide rail connections for machine tool accessories, conveying equipment, and packaging machinery;

Photovoltaic and new energy: positioning and fastening of photovoltaic brackets and battery module assembly lines;

Electronic equipment: rail-mounted installation structure inside cabinets and chassis;

Rail transit: rapid installation of interior interior panels and seat rails.

 

Quality control and certification system

Raw material control: All materials are accompanied by material certificates, and the composition is verified by a spectrum analyzer to ensure compliance with standard requirements;

Dimensional accuracy control: Key dimensions (T-head width, T-head height, flat washer diameter and thickness, bundle tail length and taper, thread specifications, total length) are fully inspected or AQL spot-checked using professional measuring tools such as image measuring machines, three-dimensional coordinate measuring machines, pass-and-stop gauges;

T-shaped head precision control: T-shaped head width and height tolerances are strictly controlled to ensure the accuracy of matching with the T-shaped groove, achieving smooth sliding and reliable positioning;

Verification of bundle tail guide performance: Each batch of products is tested for thread introduction to ensure that the bundle tail guide is smooth, not stuck, and has good threading;

Flat washer functional test: Verify the flatness, hardness and reliability of the flat washer with the head;

Mechanical property testing: including tensile strength, yield strength, hardness, and torque testing to ensure that the performance levels specified by the customer are met;

System certification: The company has passed ISO 9001 quality management system certification, and automotive products can meet the requirements of IATF 16949, ensuring that each batch of non-standard fasteners has complete traceability.

 

Customized services

Size customization: T-head width and height, flat washer diameter and thickness, tail length and taper, thread specifications (metric, imperial, American), thread length, and total length can all be customized according to customer drawings or samples;

Head type customization: As special head screws, in addition to the standard T-type head, special head types such as L-type head, cross T-type head, and toothed T-type head can also be customized;

 

Flat washer form customization:

Integrated flat pad: The flat pad and the head are integrally formed, with high strength and no risk of loosening;

Movable flat pad: The flat pad can be rotated independently to facilitate assembly and alignment;

Toothed flat pad: enhances anti-loosening performance;

 

Beam tail structure customization:

Tapered beam tail: standard guide design;

Cylindrical beam tail: suitable for precision guidance;

Toothless tail: The front end is completely threadless, making it easy to insert quickly;

Special angle beam tail: customized taper according to customer assembly requirements;

Material and strength level customization: carbon steel, alloy steel, stainless steel can be selected according to the use environment, and the performance level covers 4.8 to 12.9;

Customized surface treatment: galvanizing, nickel plating, blackening, Dacromet, Jumet, phosphating, etc.;

Packaging method: Bulk, bagged, pallet packaging, and customized labels can be provided to meet the needs of automated assembly lines.

 

FAQ

Q: What are binding screws? How is it different from ordinary screws?

A: The front end of the thread of the bundle tail screw is equipped with a tapered or cylindrical toothless guide section to facilitate quick alignment of the threaded hole and prevent misaligned teeth or skew. Ordinary screws have complete threads from beginning to end and are easily misaligned during introduction. The bundle tail design is particularly suitable for blind hole assembly or automated production lines, which can greatly improve assembly efficiency.

 

Q: What is the function of the T-shaped head?

A: The T-shaped head can be accurately embedded into the T-shaped slot or guide rail to achieve rapid positioning while preventing the screw from rotating in the slot without the need for additional tools or positioning pins. This makes this product a prime example of efficient positioning in special head screws.

 

Q: Are flat washers fixed or movable?

A: Both forms are available. The integrated flat washer and T-shaped head are formed in one piece, which has high strength and no risk of loosening; the movable flat washer can rotate independently, making it easy to fit with the surface of the workpiece during assembly. We can customize according to customer needs.

 

Q: How to ensure the guiding performance of the beam tail?

A: We strictly control the length, taper and surface finish of the bundle tail. Each batch of products is tested for thread introduction to ensure smooth guidance and no jamming. For scenarios such as automotive parts and fasteners that require high assembly efficiency, we can also provide simulated assembly test reports.

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