Square Metal Washers
Square Metal Washers suppliers
Square Metal Washers factory

Square Metal Washers

Name: China Customized Square Metal Washers Manufacturers Suppliers Factory - Joyear Metalwork
Brand: JOYEAR
SKU: 299994617

Minimum Order Quantity ： 1000 pcs
Weight Range ： 0.5g–500kg
Dimensional tolerance ： ±0.1 mm
Please provide product specifications so that we can offer specific pricing and MOQ.

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Product Introduction

Square metal washers are available in sizes from M3 to M64. This can meet different needs from small electronic equipment to heavy steel structures. According to DIN 436 standard, the thickness tolerance of M10 high-quality square washers is only ±0.10 mm. The tolerance for general grade is ±0.15 mm. The accuracy of the premium grade is improved by 33%. This difference in accuracy can effectively avoid uneven thickness. Uneven thickness can cause preload fluctuations. Therefore, the load distribution of multi-bolted connections is more even.

In an environment with constant vibrations, square washers are very good at keeping things from coming loose. According to experimental data, the M8 square washer connection vibrates sideways after two hours. The preload force that is left over is still 76% of the original value. There are only 58% of circular washers of the same size left. Also, its straight edge design makes it easier for automated assembly to recognize it. Square washers have an identification success rate of up to 99.7%. 94% of washers are round. The first one is 5.7 percentage points higher than the second one. This cuts down on downtime on the production line by a lot.

Parameters

JOYEAR is a family-owned business that provides high-volume, highly efficient export solutions for industrial components to customers worldwide. Our custom metal products are expertly crafted. Send us your design files, whether they are digital drafts or prototypes, and our knowledgeable staff will precisely create tangible parts that satisfy your requirements.

Metal Type	Tensile Strength (MPa)	Salt Spray Resistance¹ (h)	Density (g/cm³)
Low Carbon Steel	330–450	24–48 (galvanized)	7.85
Medium Carbon Steel	600–800	24–48 (galvanized)	7.85
Austenitic Stainless Steel	500–700	>1000 (plain)	7.93–8.03
Martensitic Stainless Steel	700–1200	200–400 (passivated)	7.75–7.80
Brass	300–500	100–200	8.40–8.70
Phosphor Bronze	450–700	300–600	8.80–8.90
Aluminum Alloy	200–350	50–100 (anodized)	2.70–2.80
Titanium Alloy	900–1100	>5000 (plain)	4.43–4.85

★ Our product range includes:

►Materials: Carbon steel / Mild steel / Structural steel / Stainless steel / Aluminum / Copper, etc.

►Forms: Sheets / Profiles / Tubes / Round bars / Flat bars / Square bars, etc.

Drawing Design & Confirm

Obtain drawings from clients or produce drawings based on their samples or specifications.

The drawings, product raw materials, surface treatment, and other details are attested to by both parties.

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Advantages

► Galvanizing Extends Service Life

Galvanized low carbon steel square metal washers are common. The zinc coating is usually between 5 and 8 micrometers thick. The resistance to salt spray lasts anywhere from a few hours to 24 to 48 hours. The zinc coating on premium washers is 8 to 12 micrometers thick. They can now resist salt spray for more than 72 hours. This stops rust from forming early on.

► Tolerance Grade Affects Quality

The tolerances for the inner and outer diameters of square washers affect how well they fit when they are installed. An M8 washer of standard grade has an inner diameter tolerance of ±0.30 mm. A high-quality grade can keep it within ±0.18 mm. A smaller tolerance makes sure that the bolt is in the right place. For instance, a deviation range of 0.12 mm keeps the load from being uneven. Uneven loading can cause indentations in certain places.

► Adaptation to U-Bolt Structures

U-bolts can be used with square washers. Their straight edges fit against the surface of the workpiece. This keeps round washers from possibly rotating or moving out of place. The following results were found in the test data. For a U-bolt connection with square washers. After two minutes of vibration across the body. The preload that is left is 82% of the original value. Round washers only hold 67%.

► Black Oxide Provides Short-Term Rust Protection

Black oxide (blueing) is one of the cheapest ways to treat a surface. People often use it on square washers of standard grade. The process makes a film of magnetite on the surface. In a dry room. This film protects against rust for 30 to 60 days. But when it gets wet, Rust spots can show up in less than a day. The black oxide treatment is good for storage or putting things together for a short time.

why choose us

Compatible with square hole workpieces

Many equipment bases and profiles reserve square hole sinkers. Square washer outer diameters fit well with square hole tolerances. Statistics show that 85% of industrial aluminum profile connections use square washers by default.

Prevent gasket loss

Square washers are less likely to come off the bolts when pre-assembled. The friction between its inner corner and the bolt head is greater. In the vibration table test, the shedding rate was 73% lower than that of circular washers, making it suitable for high-altitude operations.

Adaptable square nut combination

When mated to a square nut, all four sides of the washer are perfectly aligned with the nut. The force is more evenly distributed. Experiments show that the loosening torque of this combination is 28% higher than that of round washers.

Reduce gasket indentation

The straight edges of square washers disperse stress more effectively. On soft metal surfaces such as aluminum, the indentation depth is 0.15 mm shallower than for round washers. This protects the surface integrity of the workpiece.