Our objective is to present premium quality products at aggressive prices, and top-notch services to buyers around the world. We have been ISO9001, CE, and GS certified and strictly adhere to their excellent specifications for AISI 4040/4142 quenched and tempered. Chemical composition: C: 0.37 ~0.49; Si: 0.15~0.35; Mn：0.65～1.10; S: ≤0.035; P: ≤0.035; Cr：0.75～1.20; Mo: 0.15～0.25 Thread sizes: M16~M56 Thread screw: Cold threa, , , , We have extensive goods supply and the price is our advantage. Welcome to inquire about our products. We've been commitment to offer the competitive rate ,outstanding merchandise good quality, too as fast delivery for AISI 4040/4142 quenched and tempered. Chemical composition: C: 0.37 ~0.49; Si: 0.15~0.35; Mn：0.65～1.10; S: ≤0.035; P: ≤0.035; Cr：0.75～1.20; Mo: 0.15～0.25 Thread sizes: M16~M56 Thread screw: Cold threa, The quality of our products is equal to OEM's quality, because our core parts are the same with OEM supplier. The above products have passed professional certification, and we not only can produce OEM-standard products but we also accept Customized Products order.
