Cap Nuts(D-Type)&Push-on Spring Nuts (Inch series) - Round Arched,Push-On Retaining Caps

①, Performance Force Requirements max. Push Onto Stud （Ib）
②, Performance Force Requirements min.Tension On Stud（Ib）
③, Performance Force Requirements min.Removal From Stud（Ib）
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
Material properties: it is a wider use of carbon spring steel, compared with 65 steel, has a higher strength, hardness, elasticity, and hardenability, critical quenching diameter in the water is generally 30 ~ 50mm, the oil is generally 16-32mm, heat treatment with superheat sensitivity and tempering brittleness tendency, water quenching is easy to crack, the general use of oil quenching, the cross-section size of > 80 is appropriate for the quenching of the water and oil cooling: annealed cutting is still good, but cold deformation plasticity is low, and the section size > 80 should be water quenching and oil cooling The cutability after annealing is still good, but the cold deformation plasticity is low, and the welding performance is poor.    

When fastening a screw, the metal piece clamped between the screw and the object to be fastened is the washer, which generally serves as an anti-loosening function.
There are flat washers and spring washers.
Flat washers are characterized by being clamped under the screw, can expand the area of the screw seating surface, and reduce the surface pressure exerted on the fastening object (base material).
Spring washers are flat washers that are partially cut off and made into torsion-shaped washers. This type of washer is clamped between the bolt and the nut for use and generally has the effect of preventing the screw from loosening.Use these caps to hold components in place and protect shaft ends. Install these caps with a hammer or push them into place by hand.
Corrosion-resistant-coated finish is more corrosion-resistant in wet environments than a zinc-plated finish. Also known as black luster.
The nickel-plated finish has excellent corrosion resistance and a decorative appearance.
The zinc-plated finish is corrosion-resistant in wet environments.    

Size Can also be According to the Customer's requirement please check the detailed specification sheet details PDF， CAD, 65-66 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.