9 PCS Ball End Hex Key Wrench Set

Our AdvantagesProduct Description HeadHex Ball EndSize1.5-2-2.5-3-4-5-6-8-10mmMaterialS2, CRVTreatmentIntegral Heat TreatmentHardnessHRC 56-60Surface TreatmentFine Grinding, Mirror Treatment, Black OxidationStandardDIN, GB, ANSI, BSW, JIS, GOSTPackagingCarton Boxes + PalletsCarton Sizes550*340*280mmBrandUnionCertificationISO9001:2015, BSCIOriginChinaHex Key WrenchHex keys, also known as Allen keys or Allen wrenches, are a vital tool for mechanics, engineers, and machinists working with hex fasteners. These L-shaped bars allow torquing bolts, screws, and other fasteners in hard-to-reach spots and tight quarters where bulky wrenches are unusable. With a versatile and compact design, hex keys provide efficient access and usability across limitless applications.What is a Hex Key?Hex keys consist of a short L-shaped metal bar with a hexagonal shaft on the long arm that engages with hexagonal socket screws and bolts. The short arm provides improved leverage and access for generating torsion and driving the fastener. The most common size range is from .028" across flats up to 3/8", covering imperial and metric fasteners. Long-arm versions give even greater reach.Main Fastener CoatingTypesApplicationSpray Test HoursCharacteristicsMirror Nickel-platingALL Metal72HoursStableExcellent polishing performanceImprove Wear resistanceWide range of applicationsMatt Nickel-platingALL Metal72HoursBlack Nickel-platingALL Metal48HoursHigh absorption rate of solar energyUsed in solar collector panels.Manganese PhosphateALL Metal72HoursEnhanced resistanceSand BlastALL Metal-Remove paint, rust, and residue scratches or casting marksElectrophoresisALL Metal1000HoursMaintain metallic lusterAnti-corrosion propertiesColor ElectroplatingALL Metal96HoursImprove mental strength Prevent metal oxidation  Steel Material  Chemical CompositionTypesCSiVCrMnNiMoCharacteristicCR-MO0.18-0.230.15-0.35-0.40-0.600.90-1.20-0.13-0.2041xx-series SAE steel gradesExcellent strength-to-weight ratioStronger and harderNot easily weldedCRV0.50.30.180.80-1.100.70-0.90--6000-series SAE steel gradesSuitable for hardeningResist abrasion, oxidation, and corrosionImprove material elasticityS20.40-0.550.90-1.20