Diamond nut

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Diamond nut

GB 2153 - 1991

Wohe Fastener is based in Yongnian, Handan, China. We supply export-ready fasteners with specification review, packing support and stable batch delivery.
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Multiple Sizes Common sizes and standards can be matched for overseas orders.
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Material Options Carbon steel, stainless steel, grade and surface finish options.
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Stable Supply Production, inspection, packing and shipment coordination.
Specifications
Product categoryNuts
Product codeWH-213036
Published2026-09-12 02:08:35
Production originYongnian District, Handan, Hebei, China
Call Sales
Wohe Fastener

Product Specifications

Model / SpecificationM4–M16
MaterialCarbon steel
Thd.
d
M4 M5 M6 M8 M10 M12 M16
L 20 25 30 35 40 50 60
B 7 8 10 12 14 16 22
H 8 10 12 16 20 22 25
L1 4 5 6 8 10 12 16

Diamond Nut — Product Introduction

The diamond nut is a commonly used fastening connector in machine tool fixtures. It has a diamond-shaped profile and is usually used in combination with T-slots, bolts, or clamping plates for the positioning, clamping, and adjustment of workpieces. The product is made of high-quality carbon structural steel and undergoes quenching and tempering heat treatment, offering good strength, wear resistance, and torsion resistance. It is suitable for fixture applications requiring frequent assembly and disassembly as well as stable locking.

I. Product Features

  1. Diamond profile design
    The nut has a diamond-shaped profile, and its four beveled corners form multi-point contact with the walls of the T-slot. When tightened, it automatically wedges in and produces a self-locking effect, providing anti-rotation and anti-loosening functions.

  2. Top direct-insert installation
    It can be inserted directly from above the T-slot and rotated to the locking position to complete positioning, without the need to slide in longitudinally from the slot end, making installation flexible and convenient.

  3. Complete range of sizes
    A variety of common sizes are offered, facilitating fixture design and part replacement and meeting different clamping and connection needs.

  4. Heat treatment strengthening
    After quenching and tempering, the threads and edges have good wear resistance and are not easily deformed under repeated assembly and disassembly and clamping forces.

  5. Good compatibility
    It can be used together with fixture components such as T-slots, bolts, and clamping plates to form a stable positioning and clamping structure.

II. Product Advantages

  1. Good anti-loosening performance
    The diamond profile forms a self-locking effect with the mating surface, effectively reducing the risk of nut loosening under vibration or dynamic load conditions.

  2. Anti-rotation and torsion resistance
    The four diamond corners make multi-surface contact with the T-slot walls, so the nut does not easily rotate with the bolt when tightened, and it also has a certain radial torsion resistance.

  3. Convenient installation and removal
    The top direct-insert installation method allows operators to quickly replace or adjust the nut position, improving fixture clamping efficiency.

  4. High interchangeability
    As a commonly used standard part, its dimensions and thread fit offer good universality, making it easy to replace products from different batches or manufacturers.

  5. Durable and reliable
    After heat treatment, it has good hardness and wear resistance, can withstand long-term repeated assembly, disassembly, and clamping, and extends the service life of the fixture.

III. Application Scope

  1. Machine tool fixtures
    Mainly used for fastening connections in machine tool fixtures, working with T-slots and bolts to complete the positioning and clamping of workpieces on the worktable.

  2. Drilling machine fixtures
    Commonly used to lock structures such as drill jig plates and clamping plates, enabling quick clamping and release of workpieces.

  3. CNC machining centers and CNC machine tools
    Used for workpiece positioning and manual clamping in tooling and fixture systems, meeting requirements for high flexibility and repeat positioning accuracy.

  4. Automation and precision transmission equipment
    Can be used in synchronous belt drives, stop block fixing, connector locking, and other applications; suitable for light-load transmission scenarios requiring high-frequency start-stop and precise positioning.

  5. Other industrial assembly scenarios
    It is also widely used in fields such as automotive mold tooling, robotic welding fixtures, quick-change mold fixtures, and aluminum profile frame assembly.

Procurement Questions

Common procurement questions about specification, material, finish and delivery.

Please confirm the application position, load, connection thickness and working environment first, then match diameter, length, thread pitch, material, strength grade, surface finish and applicable standard. Drawings, photos or old samples help us quote more accurately.

Hot-dip galvanizing and Dacromet are common choices for outdoor applications. For humid, coastal or chemical environments, stainless steel 304/316 or higher corrosion-resistant solutions may be better.

Please provide drawings or 3D files, material, dimensions, tolerance, grade, surface treatment, packing method and quantity. If drawings are not ready, samples or installation photos can also be reviewed.

Bolts and nuts should match nominal diameter, thread pitch, thread type, standard and strength grade. High-strength connections should also use suitable washers and anti-loosening solutions.

Application Scenarios

Choose material, grade and surface treatment based on real working conditions.

Construction

Steel structures, curtain walls, embedded parts and site assembly.

Machinery

Equipment assembly, maintenance parts and frame fixing.

Solar Mounting

Outdoor brackets, corrosion resistance and weather exposure.