Product Introduction — T-Slot Bolt

GB/T 37-1988 “T-Slot Bolt” is a specialized fastening connector designed for machines, fixtures, workbenches, and other equipment with T-shaped slots. The bolt head is T-shaped, which can slide directly into the T-slot, and together with a nut it clamps and secures workpieces or accessories. The bolt typically has a partial thread, with a smooth shank section below the head that facilitates positioning within the slot and withstands shear forces. Common strength classes are 8.8 and 10.9, with materials such as 35, 45, and 40Cr, which achieve the corresponding strength after quenching and tempering heat treatment.

One Product Features

T-shaped head design: The head is T-shaped, allowing direct sliding into the equipment’s T-slot without additional backing plates, making installation convenient.

Partial thread structure: A smooth shank section is provided near the head, with threads only at the front end, facilitating positioning within the slot and enabling the bolt to withstand lateral shear loads.

Multiple strength grades: 4.8, 8.8, 10.9, and even 12.9 grades are available to meet different strength requirements based on load demands.

Customizable materials: Available in carbon steel, alloy steel, and stainless steel, suitable for general or corrosive environments.

Complete standard sizes: Manufactured according to GB/T 37 standard, with specifications ranging from M5 to M48 and a wide range of lengths, matching standard T-slots.

Various surface treatments: Available with zinc plating, blackening, phosphatizing, Dacromet, and other surface treatments to improve corrosion resistance or appearance quality.

Two Product Advantages

Quick installation: The T-shaped head slides directly into the slot, and the bolt can be installed from the slot end without disassembling the equipment, saving clamping time.

Accurate positioning: The smooth shank section fits well with the T-slot, preventing bolt rotation and ensuring stable workpiece position.

Strong load capacity: The smooth shank section can withstand shear forces, while the threaded section provides axial clamping force, offering superior comprehensive load capacity compared to ordinary bolts.

Good versatility: Compliant with national standards and compatible with standard T-slots on various machine tools, workbenches, and fixtures.

Long service life: Made from high-strength materials with quenching and tempering heat treatment, it offers excellent fatigue resistance and wear resistance, suitable for repeated clamping operations.

Easy maintenance: When replacing the bolt, it only needs to be slid out from the slot end, without affecting the overall equipment structure.

Three Application Areas

Machine tool equipment: Clamping and securing workpieces on machine tool tables such as milling machines, drilling machines, boring machines, and grinding machines.

Tooling and fixtures: Used to connect positioning and clamping components in various welding fixtures, assembly fixtures, and inspection fixtures.

Workbenches and test benches: Cast iron platforms, test benches, and assembly workbenches with T-shaped slots.

Mold fixing: Installation and locking of stamping molds and injection molds on equipment tables.

Mechanical assembly: Various occasions where position adjustment and securing need to be achieved through T-shaped slots in mechanical equipment.

Automated equipment frames: Used as connecting fasteners in profile or slot-type frame structures.