Import Aluminum Alloy Washer With Outside Screw Thread — Buy in wholesale FOB from Supplier in China

The aluminum alloy washer with outside screw thread from Wuhan Sirui Technology Co., Ltd. is a precision-machined fastener component manufactured from AL6061 aluminum alloy, a heat-treatable grade known for its excellent machinability, corrosion resistance, and moderate strength. The part, designated SRS-008, features an natural anodized finish and is produced through CNC turning, drilling, grinding, milling, and cutting operations on CNC centre machines. The outside screw thread allows this washer to function as a threaded spacer or standoff, engaging with mating internal threads rather than relying solely on clamping force. The natural colour indicates no additional dye in the anodizing process, leaving the characteristic silver-grey aluminum appearance.

AL6061, the stated material, is an Al-Mg-Si alloy with typical composition 0.4-0.8% silicon, 0.8-1.2% magnesium, and 0.15-0.40% copper, with chromium addition for stress corrosion cracking resistance. In the T6 temper, typical mechanical properties include tensile strength of 290-310 MPa, yield strength of 240-270 MPa, and elongation of 8-12 percent. The natural anodizing process forms a protective aluminum oxide layer typically 5-25 microns thick, with Type II anodizing being standard for decorative and mild wear applications. The CNC machining processes listed indicate tight dimensional control capability, with typical positional tolerances of plus or minus 0.05 mm achievable on modern CNC centres for features of this scale.

Applications span aerospace structures, medical devices, petroleum equipment, construction fittings, lighting assemblies, dental instruments, hand tools, textile machinery, security equipment, and motorcycle components. The threaded outer profile suits applications where the washer must be screwed into a housing or panel, providing spacing and load distribution in a single component. Buyers include OEMs in precision engineering, maintenance repair organisations, and distributors of industrial fasteners. You should confirm thread pitch, thread class (typically 6g for external threads), major and minor diameters, overall thickness, and whether the thread is metric or imperial with the supplier, as these critical dimensions are not stated in the source data.

Wuhan Sirui Technology Co., Ltd. is located at No.8-803, Sbi Chuangye Street, Dongxin Road, in Wuhan's East Lake New Technology Development Zone, Hubei Province, China, with postal code 430000. The company holds a harbor trust tier on the platform, with a recorded response rate of 0.00 percent and zero average response hours, indicating no platform-mediated enquiry history. This location places the supplier in one of China's major optoelectronics and advanced manufacturing clusters, though the supplier's own facility scale and capabilities are not detailed in the available profile.

The supplier lists CNC turning, drilling, grinding, milling, cutting, and CNC centre machining as core processes, suggesting a precision machining workshop rather than a simple trading company. The product range indicated by the SRS-008 model and the diverse application sectors (aerospace, medical, petroleum) implies aspiration toward higher-value markets, though buyers should independently verify actual aerospace or medical quality system certifications such as AS9100 or ISO 13485. No information is provided about year of establishment, registered capital, employee count, or annual turnover. Direct verification of the supplier's quality management system, inspection equipment (CMM, thread gauges, surface roughness testers), and customer references is advisable before committing to precision component orders.