Spring Lock Washer

Product Specifications

Technical details and manufacturing context for Spring Lock Washer

Definition

A spring lock washer is a split helical washer used as a legacy anti-loosening element in bolted joints. It remains common in general hardware assortments, but suitability must be checked for the actual vibration and preload requirement. Buyers should specify nominal size, section, material, hardness, finish and approved locking method for the joint. Standards listed here govern particular forms and do not make sizes, materials or finishes interchangeable. The RFQ should state the exact standard or drawing, required configuration, quantity and inspection evidence. This product is a component used in fabricated metal product manufacturing. It is typically made from spring steel or stainless steel by specification. The washer works by elastically flattening during tightening, providing a spring force that helps maintain tension. However, it should not be treated as a substitute for a validated locking design. For proper selection, the nominal size must match the mating fastener. The material, hardness, and finish must be confirmed against the selected standard or drawing. The surface finish can be plain, black, zinc-plated, or as specified. Strength and performance are supplier-declared test fields. Always verify product-specific values and standards with the legal manufacturer or supplier before use.

Working Principle

The helical split elastically flattens during tightening; it should not be treated as a substitute for a validated locking design. The washer is designed to provide a spring force that helps maintain tension in the joint. However, its effectiveness depends on the application and must be verified for the specific vibration and preload requirements. It is not a universal solution for all bolted joints.

Common Materials

spring steel, stainless steel by specification

Technical Parameters

Parameter	Typical range	Notes & selection driver
Applicable StandardRequired	Product-specific drawing, approval or test report required	RFQ comparison field; confirm against the selected product standard and manufacturer evidence. Confirm against the selected standard, drawing and supplier evidence.
Nominal Size / RangeRequired	Match nominal size to the mating fastener	RFQ comparison field; confirm against the selected product standard and manufacturer evidence. Confirm against the selected standard, drawing and supplier evidence.
MaterialRequired	spring steel, stainless steel by specification	RFQ comparison field; confirm against the selected product standard and manufacturer evidence. Confirm against the selected standard, drawing and supplier evidence.
Strength / PerformanceRequired	Hardness and spring response are supplier-declared test fields	RFQ comparison field; confirm against the selected product standard and manufacturer evidence. Confirm against the selected standard, drawing and supplier evidence.
Surface FinishRequired	plain, black, zinc-plated or specified finish	RFQ comparison field; confirm against the selected product standard and manufacturer evidence. Confirm against the selected standard, drawing and supplier evidence.
RFQ Selection FieldsRequired	nominal size, section, material, hardness, finish and approved locking method for the joint	RFQ comparison field; confirm against the selected product standard and manufacturer evidence. Confirm against the selected standard, drawing and supplier evidence.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Spring Lock Washer.

Manufacturers of Spring Lock Washer

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Haiyan Bolt Co., Ltd.

Jiaxing, Zhejiang, CN

Also makes: Nut, Self-Tapping Screw, Furniture Hinge and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

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BSC Corporation Limited

Shanghai, CN

Also makes: Flat Washer, Fender Washer

Listed on the company's own website · profile compiled by CNFX from public sources

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is a spring lock washer used for?

It is used as a legacy anti-loosening element in bolted joints, providing a spring force to help maintain tension.

What materials are available?

Spring steel and stainless steel by specification are typical materials, but confirm with the supplier.

How do I select the right size?

Match the nominal size to the mating fastener, and confirm against the selected standard or drawing.

Is it a substitute for a validated locking design?

No, it should not be treated as a substitute. Its suitability must be checked for the actual vibration and preload requirements.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

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