Dacromet T-Type Combination Bolt

Product introduction

High-strength Dacromet T-shaped combination bolts are customized special-shaped fasteners with a T-shaped head that can precisely match the T-shaped slot of the machine tool to achieve rapid positioning and stable clamping of the workpiece. The bolt shank is usually used with flange nuts or washers to form a complete locking assembly. As a typical non-standard fastener, the head size, shaft length and thread specifications of this large-head T-shaped screw can be adjusted as needed to meet the assembly needs of different T-shaped slot specifications. The surface is covered with Dacromet coating, which has excellent salt spray resistance and can be used for a long time in harsh environments such as high humidity and outdoors.

 

This high-strength Dacromet T-type combination bolt includes off-the-shelf standard and non-standard fasteners. Customized non-standard fasteners, customized special-shaped fasteners, large-head T-type screws, high-strength bolt fasteners, and automotive parts fasteners can be developed. The product is made of alloy steel and is equipped with Dacromet anti-corrosion coating, which has high tensile strength and excellent anti-rust and high temperature resistance. The unique T-shaped structure can be directly embedded in the chute for easy assembly and supports integrated washer shipment. Relying on cold heading and precision processing technology, manufacturers can adjust head size, screw length, and thread specifications based on drawings and samples, breaking through the limitations of conventional standard parts. It is widely used in automobile chassis, new energy equipment, and industrial automation equipment. It provides various non-standard fastening solutions in one stop to meet the customized needs of global buyers.

 

Product design and features

Alloy steel (grade 8.8/10.9/12.9), ultra-high strength, fatigue resistance, CNC machine tools, machining center fixtures

Stainless steel (304/316), corrosion resistance, pitting resistance, chemical equipment, food machinery

Core application scenarios (extensive use of automotive parts fasteners and non-standard fasteners):

Machine tools and processing equipment: CNC milling machines, drilling machines, machining centers, T-slot workpiece fixation

Auto parts manufacturing: high-intensity working conditions with fixed fixtures and frequent disassembly and assembly

Automated production line: rapid positioning and clamping of fixtures and workpieces

Mold and heavy industry: large mold clamping, pressure plate matching

When standard T-bolts cannot meet strength, corrosion resistance, or size requirements, custom non-standard fasteners are the optimal solution.

 

Quality control and certification system

Full inspection of geometric dimensions: T head width, thickness, rod length, and thread tolerance are 100% inspected using an image screening machine

Mechanical property testing:

Tensile strength test (to verify whether strength level 8.8/10.9/12.9 meets the standard)

Hardness testing (HRC 30-40)

Locking torque test

Surface and anti-corrosion: Dacromet coating thickness detection + neutral salt spray test (≥240 hours)

 

Certification system:

ISO 9001:2015

IATF 16949 (applicable to bulk supply of automotive parts and fasteners)

RoHS/REACH Compliance

 

Customized services (focus on non-standard customization):

We focus on the R&D and mass production of customized non-standard fasteners. We can provide the following customization directions for high-strength Dacromet T-type combination bolts:

The size of large-head T-shaped screws is non-standard: the T-head width, thickness, and rod length can be customized according to the customer's T-shaped slot drawings.

Non-standard intensity levels: 8.8, 10.9, 12.9 optional

Non-standard assembly: T-bolt + flange nut + washer integrated set customization

Non-standard surface treatment: Dacromet, Jiumeite, Jiaomeite, zinc-nickel alloy, etc.

Special shape customization: customized special shape fasteners such as toothed T-bolts, special-shaped T heads, etc.

Customers provide 2D/3D drawings or assembly conditions. We provide full-process services from cold heading/forging mold development, heat treatment, Dacromet coating to mass production.

 

FAQ

Q: What is the difference between T-bolts and ordinary bolts?

A: The head of the T-bolt is T-shaped and can form a sliding fit with the T-shaped groove to achieve rapid positioning. It is a customized special shape fastener, while ordinary bolts do not have this structure.

 

Q: What are the advantages of Dacromet coating?

A: Dacromet coating has excellent salt spray resistance, which can last for more than 240 hours. It is especially suitable for high humidity and outdoor environments. It is a high-end choice for surface treatment of non-standard fasteners.

 

Q: Can this bolt be used in automobile manufacturing?

A: Yes. Alloy steel grade 12.9 T-bolts with Dacromet coating meet the high strength and anti-corrosion requirements of automotive tooling fixtures and are typical applications of automotive parts fasteners.

 

Q: What is the minimum order quantity? Can I make a sample?

A: The minimum quantity for the sample stage is 200-500 pieces for assembly verification; the minimum order quantity is 5,000 pieces. Since large-head T-shaped screws require special mold opening, they are part of the customized non-standard fastener delivery process.

 

Q: Can I customize an integrated combination set with flange nuts?

A: Absolutely. We provide customized fastener services for T-bolts + nuts + washers.

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