When using fasteners, are you familiar with the standards governing them? Today, Hebei Wotu Fastener Manufacturing Co., Ltd. will discuss the national standards for fasteners with you. Let’s take a look.
1. Standards for Fastener Product Dimensions: These specifically define the basic dimensions of the product; for threaded products, this also includes the basic dimensions of the thread, thread termination, shoulder distance, undercut and chamfer, and the end dimensions of externally threaded parts.
2. Standards for Fastener Product Technical Conditions: These mainly include standards and specific regulations regarding product tolerances, mechanical properties, surface defects, surface treatment, and product testing.
3. Standards for Screw Product Acceptance Inspection, Marking, and Packaging: These specifically define the acceptable quality levels and sampling plans for product inspection items during factory acceptance, as well as product marking methods and packaging requirements.
4. Standards for marking methods of standard parts, fasteners, screws, and bolts: These standards specify complete and simplified marking methods for products.
5. Other standards for fasteners: Such as standards for fastener terminology, fastener product weight, etc.
Drill screw manufacturer, Wotu Fasteners!!!
For an M10–M24 U-bolt RFQ, buyers should send a dimensioned drawing that defines thread diameter, inside width, leg or overall length, bend geometry, thread length, application diameter, material or grade requirement, surface finish, matching nuts/washers, quantity, and packing needs. Nominal thread size alone is not enough because different measurement datums can produce U-bolts that look […]
When ordering L-shaped anchor bolts against an older standard, buyers should verify the standard’s current status, confirm the specification approved for the project, and reconcile the drawing, dimensions, material and foundation interface before releasing the purchase order. A legacy standard number on a product page or old drawing is not, by itself, sufficient evidence that […]
