
Metric Screw Sizes Chart for Sheet Metal RFQs: The Finish Assumption That Breaks Assembly Fit
Use a metric screw sizes chart without missing finish assumptions. Learn what to specify so your sheet metal RFQ quotes assembly-ready parts.

Use a metric screw sizes chart without missing finish assumptions. Learn what to specify so your sheet metal RFQ quotes assembly-ready parts.

See why a sub arc welding prototype can pass while production lots fail fit-up, and request a project review before you issue the RFQ for your batch.

Missing type of metal in an RFQ can distort quotes and inspection. Learn how to tighten material callouts before your next project review or RFQ.

Learn how oxidation of copper can change quotes, masking, and inspection for custom parts, enclosures, and weldments. Request a project review.



A China-based custom metal manufacturer supporting OEM and ODM projects from drawing review and samples to fabrication, finishing, assembly and repeat production.
PHONE & WHATSAPP
FACTORY ADDRESS
Liancheng Building, No. 21 Deyuan South Rd, Lane 12, Jidongyi, Xiaolan, Zhongshan, Guangdong, China
© 2026 Yishang Metal Products Co., Ltd. All rights reserved.
Send your project requirements or drawings if available. We’ll review what you need and follow up with the next manufacturing steps.
No drawing yet? You can still send an initial inquiry.
Tell us what you need. Drawings are optional for the first contact.