China Powder Metallurgy Parts manufacturers
1. Materai: Aluminum, Iron, Brass, or other customized requests SUS201,SUS304,SUS316,A2-70,A2-80,A4-80,4.8 6.8 8.8 10.9 12.9 2. Size: M4-M16 3. Standard: DIN GB ISO JIS BA ANSI 4. Certification: ISO9001, SGS, CTI, ROHS 5.Model: BLFAS-030 The spring pad on the expansion screw is a standard part. Because its opening is staggered and elastic, it is called a spring washer. The function of the spring washer is to pierce the nut and the pad with the sharp sharp corner of the wrong mouth to prevent the nut from loosening.China Powder Metallurgy Parts manufacturers website:http://www.blfspchina.com/screws/powder-metallurgy-parts/
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