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Blind Hole Insert Nuts with Double Head with Threaded Fasteners

This product is a double-ended blind hole nut with a cylindrical body and an internal threaded blind hole at each end, manufactured from high-quality carbon steel with a yellow zinc plating.

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Product Description

Product Overview

This product is a double-ended blind hole nut with a cylindrical body and an internal threaded blind hole at each end, manufactured from high-quality carbon steel with a yellow zinc plating. Externally threaded studs, bolts or fittings can be screwed into the blind holes from both ends to join and tension two rod assemblies. The blind-hole design keeps the threads hidden and the end faces flat and neat, making it especially suitable for concealed connections or assemblies requiring a clean appearance. With a uniform golden surface and good corrosion resistance, it is a practical and reliable connecting component for machinery and structural assembly.

Product Features

Double-ended blind hole design: Internal threaded blind holes at both ends allow studs or bolts to be screwed in from each side for joining and fastening two assemblies, with hidden threads and flat, neat end faces.

Precision internal threads: The internal threads at both ends are clearly formed, uniform and complete, ensuring smooth engagement and reliable locking with standard externally threaded rods.

Neat cylindrical body: The uniform outer diameter and regular surface provide an easy grip and convenient tool holding, with a compact footprint for easy positioning and installation.

Yellow zinc plating: The high-quality carbon steel base is finished with a yellow zinc plating, giving a uniform golden surface with good rust and corrosion resistance for a variety of working environments.

Solid and durable construction: Machined as one piece with uniform wall thickness and a dense structure, it provides reliable strength and a long service life.

Application Field

This product is widely used in applications requiring the joining of two rod assemblies or concealed connections, including machinery assembly, transmission and support structure connections, furniture and hardware fittings, and electrical and electronic equipment installation. It is especially suitable for joints where a through bolt cannot be used or where a clean appearance is required.

Instructions for use

Selection: Choose a blind hole nut with a matching internal thread size and length according to the external thread specification (diameter and pitch) and connection length requirements of the parts to be joined, and check that the threads at both ends are in good condition.

Cleaning: Clean the internal threads at both ends and the stud surfaces before installation to remove oil and dirt. For anti-loosening purposes, apply a suitable thread-locking adhesive to the threads.

Installation: Screw the studs at both ends into the blind holes in turn, ensuring the insertion depth does not exceed the depth of the blind hole. Alternate between the two ends and distribute evenly to keep both sides balanced and the connection aligned.

Tightening and inspection: Use a suitable tool on the outer body to tighten to the specified torque and check that both ends are fully engaged; in vibrating applications, inspect and re-tighten periodically.

Maintenance

Dry storage: Store unused products in a dry and ventilated place to prevent rusting after coating damage.

Periodic inspection: For connections under long-term load or in vibrating environments, check regularly for loosening or corrosion and re-tighten or replace in time.

Cleaning: Clean oil and dirt from the internal threads at both ends regularly to keep the threads clean and ensure smooth engagement.

Proper use: Always use matching specifications, never exceed the blind-hole depth when inserting, avoid forced turning that may damage the threads, and never reuse parts with damaged threads.

FAQ

Q: What material and surface finish does this nut have?

A: It is made of high-quality carbon steel with a yellow zinc plating, giving a uniform golden surface with good rust and corrosion resistance. The specific material and plating process are subject to the product specification.

Q: How is the double-ended blind hole nut used?

A: Externally threaded studs, bolts or fittings are screwed into the blind holes at both ends to join, tension and fix the two rod assemblies.

Q: Why are blind holes used instead of through holes?

A: The blind holes at both ends keep the threads hidden and the end faces flat and neat, suiting concealed connections and assemblies with appearance requirements, while precisely controlling the insertion depth to prevent the rods from passing through.

Q: How to select the right specification?

A: Choose a nut with an internal thread size and length matching the external thread diameter, pitch and connection length of the parts to be joined. Provide your thread parameters for sizing assistance.

Q: How to prevent loosening?

A: Tighten to the correct insertion depth and apply thread-locking adhesive to the threads for enhanced anti-loosening; in vibrating environments, inspect and re-tighten periodically.