Quality Control System Black Butterfly Washer Fixing

Hanyee Metal is a combo of manufacrturing and trading for the bespoke fasteners and metal components.  StandardDIN, BS, ANSI, JIS, GB and so onHead TypeFlat Head,Pan Head, Countersunk Head, Round Cone Head, Hex Head, Round with Washer Head, Pan with Washer Head and so on, as customer requiresRaw Material1, Carbon Steel: C1008, C1010, C1022, 10B21 2, Aluminum 3, Steel: 35K, 45K, 10B21 4, Iron 5, Stainless Steel: SS201, SS301, SS303, SS304, SS316, SS416, SS420 6, Brass:C36000, C37700, C38500, C27200, C28000.... 7, Copper Surface finishZinc Plated, Ni Plated, Brass Plated Tin Plated, Black Plated, Copper Plated.  hot-working, make hardness up to 6.8,8.8, 9.8, 10.9, 12.9 gradeShank Diameter1.5mm-18mmProcessMainly Cold-Heading, CNC,Stamping,Die-CastingCertificationsISO9001,ROHS,SGS Sample AvailabilitySamples are available.MOQWe accept test orders of small quantity. Price termsFOB, CIF, CFR, EXW, and other trade terms.Lead Time15-30days, according to customer's order qty and detailed requirementsPacking500-2000pieces in a Polybag, then into a carton box, finally into a pallet, or customized Size of the caton box: 33CMX25CMX15CM  Size of the Pallet: 100CMX80CMX15CM, 16 Pallets in one 20'Container  Size of the Pallet: 85CMX75X15CM,18 Pallets in one 20'ContainerWarranty PolicyWe confirm our qualities satisfy to 99.9%, and have 6-month quality warranty After Sales ServiceWe will follow up the requst strictly for customers, and will help customers solve problems after sale. Q: Please send your price list for our reference.A: We do not have standard price list because we produce according to customer design. We can provide the quotation for your inquiries in a shortest possible time. Q:Please quote the price for meA: Our standard response time is 2 working hours, once you confirm the demand and drawing we shall provide the quote within 12 working hours. Q:Can I get some sample?A: Sure. We believe sample order is a good way to start our cooperation.   If it is a standard product, it would be for free but freight on your account.   If customized, we shall prepare the sample after receipt of development cost. Q: Have FASTENERS 100% assembled well in stock?A: Some of standard size is in stock. Most is OEM item out of stock. Q: Could I use my own LOGO or design on goods?A: Yes, Customized logo and design on mass production are available. Q: What is the delivery time?A: Our lead time for samples is one week; 15-30 days for mass production. It is usually according to the quantity and items. Q:What payment do you accept?A: We accept T/T, West Union,L/C,Trade Assurance in Alibaba. Q: Can I trust you?A: Absolutely! We are "Made In China" & "Alibaba" verified supplier. Q: May I visit your factory?A: You are welcome to visit us anytime. We can also pick you up from nearest airport and Train station.   /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1