T-Head Bolts / Hammer Head Screws (DIN 186 / T-Slot) – Zinc Plated & Stainless Steel – Manufacturer Direct

High-Performance T-Head Bolts (Hammer Head Screws) for T-Slot Systems

At Handan Bolt, we manufacture a comprehensive range of T-Head Bolts, also commonly known in the industry as Hammer Head Bolts or T-Slot Screws. Produced in our Yongnian facility, these fasteners are engineered for quick, secure assembly in modular framing systems, machinery tables, and solar mounting structures. Whether you need standard DIN specifications or custom dimensions for aluminum profiles, we deliver factory-direct value.

What is a T-Bolt?

A T-Bolt is a specialized fastener characterized by its T-shaped head. This unique geometry allows the bolt to be inserted directly into a T-slot (Read more on Wikipedia) channel found in machine tables or aluminum extrusions. Once inserted, the bolt is turned 90 degrees, locking the “hammer head” behind the lips of the channel, creating a secure anchor point without the need for welding or drilling.

Design Types and Standards

We manufacture various styles of T-bolts to suit different industrial requirements:

1. DIN 186 / DIN 261 (Square Neck T-Bolts)

As illustrated in your product image, these bolts feature a Square Neck immediately beneath the T-head.

• Function: The square neck fits into the groove opening, preventing the bolt from rotating while you tighten the nut. This allows for easy one-handed installation.
• Application: Heavy machinery clamping, motor mounting, and railway applications.

2. Solar & Aluminum Profile T-Bolts (Hammer Head)

Designed specifically for 2020, 3030, 4040, and 4545 series aluminum extrusion profiles.

• Feature: These often have a specialized head geometry to fit standard profile slots (8mm, 10mm slots).
• Usage: Solar panel racking systems, 3D printer frames, and industrial workstations.

Material Grades and Finishes

To ensure reliability in diverse environments, we offer T-Bolts in several material options:

• Carbon Steel (Grade 8.8): The industry standard for structural strength. We apply a Zinc Plated (Galvanized) or Nickel plated finish to prevent corrosion in indoor and mild outdoor settings.
• Stainless Steel (304 / 316): Essential for outdoor solar installations or marine environments. Stainless steel T-bolts offer superior rust resistance and are non-magnetic.
• Grade 4.8: For lighter duty clamping applications where cost is the primary driver.

Key Benefits of Using Our T-Bolts

• Adjustability: T-bolts can be positioned anywhere along the length of a T-slot track, offering infinite adjustability for mounting components.
• Drop-in Installation: Unlike standard hex bolts that must be slid in from the ends of a profile, many of our hammer head bolts are designed to be “dropped in” directly from the top of the slot and twisted to lock.
• Secure Locking: The wide head surface area provides excellent clamping force distribution, protecting the aluminum profile from deformation.

Why Partner with Handan Bolt?

Custom Head Dimensions: The head width (m) and length (n) are critical for T-bolts. We can customize these dimensions strictly “According to Drawing” to fit your specific channel.
Large Inventory: We stock standard M6, M8, M10, and M12 sizes for immediate dispatch.
Complete Assemblies: We can supply T-bolts pre-assembled with Flange Nuts if required.

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