JISB1216 Cap Nuts(D-Type)&Push-on Washers for Imperial Round Shaft - Steel

Hardness: HRC:44-51, HY:435-530
Surface treatment: blackening
Material: manganese steel (65Mn, 1566)
Material properties: it is a wider use of carbon spring steel, compared with 65 steel, with high strength, hardness, elasticity, and hardenability, critical quenching diameter in the water is generally 30 ~ 50mm, and the oil is generally 16-32mm, heat treatment with superheat sensitivity and tempering brittleness tendency to water quenching easy to crack, the general use of oil quenching, the cross-sectional size of > 80 should be quenched and oil-cooled water quenching: annealing cutting is still good, but cold deformation plasticity is low, poor welding performance. However, the cold deformation plasticity is low, poor welding performance. This steel is generally used by pure fire, medium temperature tempering. 3-16
Material chemical composition (%): carbon: 0.62 - 0.70, silicon: 0.17 - 0.37, manganese: 0.90 - 1.20
Phosphorus ≤ 0.035, sulfur ≤ 0.035, nickel ≤ 0.25, chromium ≤ 0.25, copper ≤ 0.25    

With flexible teeth that slide smoothly over threads of any pitch, these push nuts can be used as standalone nuts for light-duty applications or as jam nuts to keep hex nuts and bolts securely fastened. All have a finish that resists corrosion in wet environments.    

Size Can also be According to the Customer's requirement please check the detailed specification sheet details PDF， CAD, 67-68 Page See more product details.    

Packing: The inner packaging consists of polyfoam, while the outer layer is a carton. The carton sizes are 29*19*19.5 cm and 23.5*17.5*8 cm, respectively. The pallet dimensions are 215*100*90 cm, or they can be customized according to your requirements.