S-3127N16 3.2 mm ID x 12 mm OD Finishing Washers
Finishing Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance from 316 stainless steel construction, ideal for harsh environments and chemical exposure
- Precise flush mounting with 100° countersink angle for seamless integration with M3 screws and smooth surface finishes
- Optimized load distribution through precise 12mm OD and 3.2mm ID dimensions, reducing surface stress and material fatigue
- Enhanced mechanical durability with Rockwell B83 hardness, maintaining structural integrity under repeated tightening
- Reliable metric sizing ensuring perfect compatibility with M3 screw assemblies and global equipment standards
- Full regulatory compliance meeting RoHS 3 and REACH requirements for safe use in regulated industries
- Consistent thickness control (2.2-2.8mm) providing uniform clamping force and vibration resistance
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 316 stainless steel countersunk washers solve critical challenges in precision assembly. The 100° countersink angle ensures complete flush seating with M3 fasteners, eliminating protrusions that compromise surface integrity in aerospace panels, marine equipment, and food processing machinery. The marine-grade 316 stainless steel delivers superior pitting resistance against chlorides and acidic conditions, while the Rockwell B83 hardness maintains dimensional stability under thermal cycling and vibration. These metric system washers are particularly valuable in pharmaceutical manufacturing and chemical processing applications where RoHS 3 and REACH compliance is mandatory, ensuring no hazardous substance migration into sensitive processes.
Specification Summary & Compliance
This precision countersunk washer features metric dimensions with 3.2mm ID, 12mm OD, and controlled thickness between 2.2-2.8mm. Manufactured to exacting standards for M3 screw compatibility with 100° countersink geometry. The 316 stainless steel construction meets industrial hardness requirements at Rockwell B83. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and unrestricted use across international markets.
