Stainless Steel Serrated Lock Washers
Internal & External Serrated Washers for Industrial Fastening Applications
Stainless Steel Serrated Lock Washers use multiple inclined serrations to create localized contact beneath a bolt head, screw head or nut. VALTOR supplies external Form A and internal Form J in 304/A2 and 316/A4 stainless steel to traditional DIN 6798 dimensions and customer specifications.
Product Overview
These single-piece spring-metal washers use many inclined, twisted serrations around the perimeter. Tightening brings the serrated edges into localized contact with the fastener bearing face and mating surface, which may increase resistance to relative rotation in a suitable joint.
Form A places serrations around the outside diameter for a larger visible contact diameter. Form J concentrates serrations around the inside diameter where a compact outside profile or confined bearing area is required. Neither form is universally stronger; selection depends on head diameter, available space, bearing surface and joint design.
For purchasing, specify nominal fastener size, Form A or J, d1, d2, thickness s, serration geometry, material, surface requirement, quantity and drawing or sample. Performance depends on clamp load, mating-surface hardness, coating and actual installation conditions.
Technical Specifications
External vs Internal Serrations & Joint Selection
304 / 316 Stainless Steel & Size Options
Choose material and form according to corrosion exposure, fastener material, mating-surface condition and available bearing space. Stainless steel does not automatically provide better locking performance.
Serration Geometry & OEM Manufacturing
Inner diameter, outer diameter, thickness, Form A/J, serration count and geometry, material and finish.
Traditional DIN 6798 dimensions, customer drawing, sample or OEM specification.
Provide fastener size, form, ID, OD, thickness, material, finish, mating surface, quantity and drawing/sample. Export packaging and authorized private labels are available.
Dimensional & Functional Quality Control
Functional checks may cover mating-fastener fit, serration contact, compression/seating and surface interaction. No universal locking torque, clamp load or vibration value is assumed without an agreed test method.
Applications
Serrated contact beneath fastener heads or nuts in suitable machinery joints.
Internal or external forms for appropriate cabinet and enclosure assemblies.
Frames, brackets and sheet-metal equipment where surface marking is acceptable.
304/A2 and 316/A4 material options selected for the exposure.
Form A, Form J and drawing-based serrated washers by dimension and material.
Frequently Asked Questions
What is a Serrated Lock Washer?
It is a thin spring-metal washer with multiple angled serrations that create localized contact with mating surfaces when clamped.
What is the difference between external and internal Serrated Lock Washers?
Form A places serrations around the outside diameter; Form J concentrates them around the inside diameter for a compact outer profile.
What is the difference between DIN 6798 and DIN 6797?
DIN 6798 refers to serrated lock washers and DIN 6797 to toothed lock washers. Both are historical withdrawn DIN references, but their tooth geometry differs.
Do Serrated Lock Washers guarantee vibration resistance?
No. Actual behavior depends on clamp load, surface hardness, material, coating, joint stiffness, vibration and installation.
Can VALTOR supply 304 and 316 Stainless Steel Serrated Washers?
Yes. VALTOR supplies 304/A2 and 316/A4 Form A and Form J washers plus drawing-based custom dimensions.
Related Products
Share nominal size, Form A/J, d1, d2, thickness, material, surface requirement, drawing and quantity with VALTOR.