S-91475A289 0.314" ID x 0.583" OD ASME B18.21.1; MS35338-45 Mil. Spec. Split Lock Washers
Mil. Spec. Split Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance prevents fastener loosening in high-stress applications
- Exceptional corrosion protection through zinc yellow-chromate plating extends service life
- Precision fit for 5/16" screws with 0.314" ID ensures secure fastening alignment
- Heavy-duty construction with Rockwell C38 hardness maintains structural integrity under load
- Industry-standard compliance with ASME B18.21.1 and MS35338-45 specifications guarantees reliability
- Optimal spring tension from standard split design provides consistent locking force
- Dimensional accuracy with 0.583" OD and 0.078" thickness ensures proper installation
Professional Applications & Engineering Value
This split lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. The zinc yellow-chromate plated steel construction provides dual protection against corrosion and wear, significantly extending maintenance intervals in harsh environments. Engineered with Rockwell C38 hardness, these washers maintain their spring tension and locking capability even under extreme vibrational stresses common in machinery, automotive assemblies, and heavy equipment. The precise 0.314" ID ensures perfect compatibility with 5/16" screws, while the split design creates continuous upward force that counters rotational loosening - solving the persistent challenge of fastener failure in dynamic systems.
Specification Summary & Compliance
Manufactured to exacting dimensional standards with 0.314" inner diameter, 0.583" outer diameter, and 0.078" thickness. Complies with ASME B18.21.1 specifications for split lock washers and military standard MS35338-45, ensuring consistent quality and performance. The standard split lock washer type provides reliable spring action while the zinc yellow-chromate plating meets industry corrosion resistance requirements. Suitable for inch-system applications where precision fit and vibration resistance are critical operational requirements.
