All-Pro Fasteners
Manufacturing. Sourcing. Services. Solutions.™

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Lock Washers

We manufacture and globally source lock washers for use in high-vibration fastening environments, with a wide range of materials and coatings available. We also offer fastener kitting services to make your operations more efficient.

  • Split Lock Washers
  • Split Lock Washers, Internal/External Tooth

Built For All Industries

All-Pro Fasteners™ (APF) provides all the resources and professional-grade products you need, for any size job.  APF serves a wide range of markets through our manufacturing and strategic sourcing divisions, along with the added support of domestic and global suppliers.


APF provides customers with additional product support options to handle all project requirements.

  • Engineering Support
  • Parts Consolidation
  • Design Assistance for New Products
  • Lunch & Learn Training
  • Alternative Product Recommendations
  • Cost Savings Proposals


APF is partnered with key domestic and global suppliers to provide a steady supply of bottlenecked items and other products. Our experts specialize in determining on-time, on-budget purchasing and supply chain management solutions our customers can count on. APF’s strategic sourcing process involves analyzing the supplier market, identifying and integrating quality suppliers into  business plan, and monitoring performance.


APF goes above and beyond industry standards of quality and dependability.  Our certified quality management system is regulated by both ISO 9001 & API Q1 requirements. We also benefit from committee association with ASTM, ASME, API, and other consensus standard organizations. Our in-house ISO/IEC 17025 accredited laboratory also assists us in accomplishing our goals with testing capabilities that include:

  • Plating Thickness
  • Dimensional Metrology
  • Charpy Impact Testing
  • Hydrogen Embrittlement
  • Magnetic Permeability
  • Rotational Capacity
  • Fatigue Testing
  • Adhesion Testing
  • Bend Testing
  • Mechanical Testing (Proof Load/Tensile up to 400,000 lbs.)
  • Hardness (Rockwell/Brinell)
  • Spectrometer Testing (P.M.I.)


All-Pro Fasteners is here to provide customers one point-of-contact, one purchase order to issue, and one supplier to count on. Our sales managers are category experts in the industrial engineering market, and designated account managers assist with any size order. The scope of our operations, along with our laboratory quality management system and company certifications, help ensure the higher level of product quality and service customers expect from us. With our quality assurance program, we can guarantee complete confidence when purchasing any critical application and safety-related products. That’s the All-Pro Difference.

Have a specific inquiry? Email our industry specialists here.