Washer Niczuk M16 inner diameter 17 mm outer diameter 50 mm steel

Flat washer Niczuk for M16 fasteners with an inner diameter of 17 mm and an outer diameter of 50 mm made of steel. This metal washer is designed to be installed under bolt heads or nuts to distribute clamping force over a larger surface, reduce localized wear on joined parts, and protect finished surfaces from damage during tightening. The washer's dimensions suit M16 threaded connections while the steel construction provides mechanical strength and basic corrosion resistance when used with compatible coatings or in controlled environments.

Advantages

The steel construction ensures stable load distribution and resistance to deformation under typical assembly torques for M16 connections. The outer diameter of 50 mm increases the contact area compared with smaller washers, lowering bearing stresses on softer materials. The inner diameter of 17 mm accommodates M16 bolts and screws with minor clearance for ease of assembly. The flat profile allows use in confined spaces and under a variety of fastener head types.

Suitable for

• General construction bolted joints using M16 fasteners
• Machinery assembly and maintenance where surface protection is required
• Industrial installations and equipment fastening
• Repair work on structural elements with need for increased bearing area

Key specifications

• Material: steel
• Inner diameter: 17 mm
• Outer diameter: 50 mm
• Profile: flat washer
• Intended fastener size: M16

How to use

Place the washer onto the M16 bolt or screw so that the inner hole seats around the shank, then position the fastener and washer against the mating surface before tightening the nut or driving the screw. Ensure the washer lies flat and fully contacts the surface; avoid using damaged or deformed washers. Tighten the fastener to the specified torque for the application, accounting for the presence of the washer when calculating clamp load.

Usage recommendations

For outdoor or corrosive environments, consider using a coated or stainless steel alternative or applying appropriate corrosion protection to both the washer and mating fasteners. When fastening into soft materials, confirm that the increased outer diameter provides sufficient load distribution; use larger or specialized washers if required. Inspect washers before reuse and replace if signs of wear, cracking, or significant deformation are present.