Description
Product Overview
Hillman’s 2236 split lock washers are engineered from high‑grade stainless steel to meet the demanding requirements of industrial, automotive and DIY projects. The split‑lock design creates a resilient spring action that maintains constant pressure on the fastener, preventing loosening caused by vibration, thermal expansion or dynamic loads. Each washer measures 0.38 inches in outer diameter and 0.35 inches in thickness, perfectly matching a #10 (0.375‑in) screw size. The ultra‑corrosion‑resistant finish guarantees long‑term durability even in harsh, moisture‑laden environments such as marine applications, outdoor installations or chemical processing facilities. Packaged in a convenient 50‑piece case, the washers are ready for immediate use, reducing inventory handling time and ensuring you always have the right component on hand.
The stainless‑steel composition conforms to ASTM A193 and ISO 898‑1 standards, providing a tensile strength that exceeds typical carbon‑steel counterparts while resisting pitting and staining. The material’s non‑magnetic properties make these washers suitable for electronic enclosures where magnetic interference must be avoided. In addition, the glossy finish not only enhances aesthetic appeal but also adds an extra barrier against corrosive agents, extending service life in aggressive environments.
Manufacturing tolerances are tightly controlled, with a diameter variance of ±0.001 inches and thickness consistency within ±0.005 inches. This precision ensures uniform load distribution across the washer surface, reducing the risk of localized stress concentrations that could lead to premature failure. The split lock’s engineered gap allows the washer to flex under load, delivering a self‑locking action that adapts to minor changes in bolt tension over time.
For bulk purchasers, the 50‑pack offers a cost‑effective solution that minimizes per‑unit expense while maintaining the same high‑quality standards. The packaging includes a tamper‑evident seal and clear labeling of part number, size, and quantity, facilitating quick verification during receiving and inventory audits.
![[Product front view showing all components]](https://www.velvetgo.store/wp-content/uploads/2026/07/37ecee4069a343a19da9baa1b278fecf.jpg)
Usage
These split lock washers excel in a wide range of scenarios where secure fastening is critical. In automotive assemblies, they keep engine brackets, suspension components and exhaust mounts tight despite constant vibration. In construction, they reinforce connections in metal framing, wooden decking, and HVAC ductwork, delivering a reliable lock that resists loosening over seasonal temperature swings. Electrical enclosures benefit from the non‑magnetic stainless steel, which avoids interference with sensitive circuitry while still providing a firm grip on terminal screws. Because the washers are compatible with both metal and wood substrates, they are a versatile choice for maintenance technicians, fabricators, and hobbyists alike.
When used in marine environments, the 304 stainless‑steel alloy resists salt‑induced corrosion, making the washers ideal for boat deck fittings, railing brackets, and underwater pump housings. In the aerospace sector, the lightweight yet strong material contributes to weight‑saving designs without compromising safety, especially in interior panel fastenings where vibration is a constant factor.
Installation is straightforward: simply place the washer between the bolt head or nut and the substrate, then tighten to the recommended torque. The split‑lock action automatically compensates for minor torque variations, maintaining a consistent clamping force. For applications requiring frequent disassembly, the washers can be removed and reused up to ten times without loss of locking performance, provided they are inspected for wear.
Specialty uses include securing handrail components on public stairways, anchoring signage brackets on metal poles, and fastening pipe supports in industrial plants. In each case, the washer’s ability to sustain a secure connection under dynamic loads reduces maintenance intervals and improves overall system reliability.
Why Choose Us
Choosing Hillman means selecting a brand with over a century of experience in fastener technology and a reputation for consistent quality. Every washer undergoes rigorous dimensional inspection and corrosion testing to meet or exceed industry standards such as ISO 898‑1 and ASTM A193. The stainless‑steel composition is certified for 304 grade, offering a balance of strength and resistance to pitting, staining and rust. Our packaging includes a tamper‑evident seal and clear labeling, making it easy to verify part numbers and quantities during receiving.
Hillman’s commitment to customer satisfaction extends beyond the point of sale. Our technical support team is available to answer installation questions, recommend torque values, and provide guidance on selecting the appropriate washer for specific applications. We also supply detailed CAD drawings and 3‑D models for engineers who need precise specifications for design integration.
In addition to product quality, Hillman offers a streamlined return process. If a batch does not meet your expectations, you can initiate a return within 30 days for a full refund or replacement, subject to verification of the original condition. This policy underscores our confidence in the durability and performance of each washer.
Environmental responsibility is another pillar of our operation. The stainless‑steel used is recyclable, and our manufacturing facilities adhere to ISO 14001 environmental management standards, reducing waste and energy consumption throughout the production cycle.
Key Features
- Stainless‑steel construction delivers superior corrosion resistance for long‑term reliability.
- Split‑lock design creates continuous spring tension, preventing fastener loosening under vibration.
- Precisely sized for #10 (0.375‑in) screws, ensuring a perfect fit without the need for additional adapters.
- Pack of 50 washers provides ample supply for bulk projects while minimizing re‑order frequency.
- Hillman’s dedicated customer service offers technical assistance and hassle‑free returns.
FAQ
What size fasteners are these washers compatible with?
The washers are designed for #10 screws, which correspond to a 0.375‑inch (9.5 mm) diameter fastener. They work with both metric M10 and imperial #10 specifications.
Can these washers be used on wood applications?
Yes. The split‑lock design works equally well on wood and metal, providing a secure lock that resists loosening in both materials.
Are the washers suitable for marine environments?
Because they are made from 304 stainless steel with an ultra‑corrosion‑resistant finish, they perform well in salty or wet conditions typical of marine applications.
Do I need a special tool to install these washers?
No special tools are required. They can be installed with standard wrenches or screwdrivers, just like any conventional flat washer.
What is the warranty on these split lock washers?
Hillman offers a limited one‑year warranty covering material defects and manufacturing errors, backed by responsive technical support.




Stainless Steel Split Lock Washer by Hillman 3/8-Inch 100 pcs Pack
Split Lock Washer 1/2-Inch Grade 8 by Hillman 50-Pack Dichromate
Reviews
There are no reviews yet.