Aluminum Alloy Flange Bolt

Product Overview

This product is an aluminum alloy flange bolt with an integrated, widened flange face under the head. It is an industrial fastener that combines light weight with excellent corrosion resistance. Manufactured from high-quality aluminum alloy, it has low density and light weight while offering good strength and toughness. The flange face enlarges the contact area with the workpiece and evenly distributes clamping pressure, so no separate flat washer is required to achieve a firm, reliable connection — making assembly simpler and the lock more secure. A full range of sizes is available, and it is widely used in machinery, automotive parts, new energy and energy storage equipment, solar mounting brackets, outdoor facilities and similar applications.

 

Product Features

Integrated flange face, no flat washer needed: The one-piece widened flange face under the head enlarges the bearing area and distributes pressure evenly, functionally replacing a flat washer, reducing the number of parts for simpler assembly and a more secure connection.

Lightweight and strong: Made of high-quality aluminum alloy with low density and light weight, it effectively reduces the overall weight of machines and structures while providing good strength to meet the load requirements of lightweight connections.

Excellent corrosion resistance: The aluminum alloy naturally forms a dense oxide film on its surface, providing outstanding rust and corrosion resistance, especially suitable for long-term outdoor and humid use.

Precision threads, smooth engagement: The threads are clearly formed, uniform and complete, ensuring smooth engagement, a firm lock and even load distribution.

Complete sets with full size range: Hex nuts and spring washers can be supplied together with the flange bolts as complete sets on request, with multiple sizes available to suit different hole diameters and thicknesses.

 

Application Field

This product is widely used in applications with strict requirements on lightweight construction, corrosion resistance and connection reliability, including machinery manufacturing, automotive and motorcycle parts, new energy battery and energy storage equipment, solar mounting brackets, outdoor facilities and electronic products. It is an ideal fastener for assembly processes in these industries.

 

Instructions for use

Preparation: Select the appropriate flange bolt according to the hole diameter, thickness and load requirements of the connection, and check that the threads and flange face are in good condition.

Installation: Insert the flange bolt through the mounting holes so that the flange face seats tightly against the workpiece. When a nut is required, slide on the spring washer on the opposite side and thread on the hex nut for pre-tightening.

Tightening: Use a suitable wrench or torque tool and tighten to the recommended torque. As aluminum alloy is relatively soft, do not over-torque, so as to avoid damaging the threads.

Inspection and re-tightening: Check the connection after assembly; in vibrating applications, re-tighten periodically to prevent loosening.

 

Maintenance

Dry storage: Store unused flange bolts in a dry and ventilated place to avoid damage caused by long-term moisture.

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

Cleaning: Clean oil or dirt from the surfaces before assembly to ensure smooth thread engagement.

Proper use: Always use matching sizes, avoid mixing unmatched specifications, and never reuse damaged or deformed parts.

 

FAQ

Q: What material is this flange bolt made of?

A: It is made of high-quality aluminum alloy, which is lightweight and corrosion-resistant. The specific alloy grade is subject to the product specification.

 

Q: Why is no flat washer needed?

A: The flange bolt has an integrated widened flange face under the head, which enlarges the bearing area and evenly distributes clamping pressure, functionally replacing a flat washer. Therefore no separate flat washer is required, making installation easier and the connection more secure.

 

Q: Is the product supplied as a complete set?

A: Yes, the flange bolts can be supplied together with hex nuts and spring washers as complete sets on request, ready for direct assembly.

 

Q: How to select the right size?

A: Choose the diameter and length according to the hole size, thickness and load requirements of the connected parts. For sizing assistance, please provide your installation parameters.

 

Q: How to prevent the bolt from loosening?

A: Tighten to the recommended torque, use spring washers or thread-locking adhesive when required, and re-tighten periodically in vibrating environments.

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