

With experience in screw and fastener manufacturing and sales, we operate our own production facility with stable large-scale capacity. We are specialists in self-drilling screws, drywall screws, chipboard screws, machine screws, bolts, and customized fasteners for construction and industrial applications.
When purchasing a large quantity of self-tapping screws, it is only useful when you have a precise understanding of what the unit price covers.
Two quotes may appear to describe the same product, but they may differ in size, coating, packaging, or delivery conditions. For U.S. importers and distributors managing multiple inventory units, these differences can make supplier comparisons difficult.
A clear Request for Quotation (RFQ) helps suppliers understand your needs and provides a unified standard for the procurement team to evaluate their quotations.
This checklist explains what should be included, which details need to be confirmed, and how to transform preliminary inquiries into specifications that can be reviewed by both the buyer and the supplier.

List each size, surface treatment, and packaging configuration separately, rather than combining several products under a general description, such as "hex head drill tail screw".
For each SKU, please include:
| Specification | Information required |
|---|---|
| Buyer's product number | Your internal SKU or part number |
| Drawing or reference file | Drawing number, revision level, or existing product reference |
| Dimensions: | Nominal diameter, thread specification, and length |
| Measurement system | Imperial or metric, with clear unit identification |
| Head and driver | Required head style and driver type |
| Material | Known required material specifications |
| Surface treatment or coating | Specified surface treatment, color, or coating requirements |
| Drill point | Required configuration or review reference |
| Washer | Is a washer required and its specifications |
| Order quantity | Quantity of this individual product |
| Packaging | Packaging form and quantity per package |
If a size or product characteristic has not been selected, please mark it as requiring supplier recommendation. This is clearer and more explicit than leaving the field blank or allowing unapproved substitutions.
For replacement products, please provide the original specifications as much as possible. Photos can serve as an auxiliary means of identification, but please ask the supplier to confirm the dimensions and configuration, rather than relying solely on appearance.
Before proceeding: Please have the supplier confirm in writing any discrepancies they propose with your specifications.

When requesting a quotation from a self-tapping screw manufacturer, please specify the intended connection method. This will assist the supplier in determining which requirements require technical confirmation before providing a quotation or recommending products.
Including:
List the screw length, connection thickness, and required drilling capability as separate fields in the inquiry sheet. Request the supplier to review these details in conjunction with the proposed project.
For distributors who procure inventory for multiple applications, it is necessary to clarify the intended use of the products. Without proper review, do not assume that one specification can replace multiple existing products.
Buyer's pending question: Does the quotation cover the connectivity products we described, or only products with similar names?
Descriptions such as "outdoor quality" or "heavy-duty finish" leave room for interpretation.
If the customer has already specified the material or coating, please indicate this requirement in the inquiry form. If the customer has not yet made a choice, please describe the application scenario and request the supplier to explain their recommended options.
Your inquiry should distinguish between the following:
For screws with washers, please provide the requirements for the washers separately, including dimensions, materials, and any applicable project specifications.
In cases where documentary evidence is required, it is important to specify what you need to verify. It is necessary to confirm that the document pertains to the product being provided, rather than accepting a general statement about the supplier's product range.
Before proceeding: Record the approved materials, surface treatments, and gasket configurations in the final specification.
For orders with multiple SKUs, providing only the total quantity is insufficient.
For large quantities of industrial screws, please list the quantity for each combination of size, surface treatment, and packaging. This will allow the supplier to quote for each item and clarify any conditions that may affect the order.
You can also specify that this inquiry is for:
If you anticipate repeat purchases, please provide an estimated ordering pattern. Please clearly indicate that the forecast is only an estimate and not a confirmed commitment.
For orders with mixed sizes, please request the supplier to specify which products can be combined, and whether the proposed combination will affect pricing, packaging, or shipping plans.
Buyer's pending issue: Has the supplier provided separate quotations for each SKU and confirmed the conditions for the entire order?

Packaging is a part of the purchasing specification, especially when the screws will be resold under your own product number.
Please specify the format you require and the information that must be displayed on each packaging level.
| Packaging | Project Contents to be Clarified |
|---|---|
| Packaging Form | Bulk carton, inner box, retail packaging, or other required forms |
| Packaging Quantity | Quantity per inner packaging and main outer box |
| Product Identification | Buyer's SKU, product description, and size label content Required text, barcode data, and other identifiers |
| Branding | Art design or private label requirements |
| Carton marking | Transportation marking and handling information |
| Batch identification | Required batch or batch reference |
| Tray requirements | Receiving restrictions or preferred arrangements |
If artwork is involved, please specify the party providing the artwork and how the approval process will be documented. The supplier is required to separately list all costs related to packaging.
Do not assume that the quotation includes your preferred label or packaging format. It is essential to clearly specify the packaging specifications in the inquiry sheet and supplier's response.
If the sample is part of your approval process, please specify what you intend to evaluate.
Clarify product configuration, drawing version, packaging requirements, and characteristics that are crucial to your purchase. Request the supplier to confirm whether the provided sample represents the product being quoted.
Your acceptance requirements may involve:
If specific inspections or tests are required, please provide the applicable methods or project requirements, and request the supplier to confirm their feasibility and scope.
Before authorizing an order, document the sample decision and any agreed-upon changes. If the specifications change after approval, determine whether further review is necessary.
Before proceeding: Ensure that both parties are using the same approved version.
Inform the supplier whether you are specifying the target production completion date, shipping date, arrival date, or warehouse delivery date.
Inquire about the quotation to clarify:
Meanwhile, please provide the currency, price unit, validity period, and payment terms of the quotation.
If the quotation is based on certain assumptions, these assumptions should be listed. This facilitates the review of the quotation and determines which issues must be resolved before issuing a purchase order.
An incomplete response requires clarification before it can be deemed equivalent to another proposal.
Record these clarifications and incorporate the agreed requirements into the purchase order.

| Buyer SKU | Drawing/Reference | Dimensions and Units | Head/Driver | Material/Surface Treatment | Drill Point/Connection Requirements | Washer | Quantity | Packaging |
|---|---|---|---|---|---|---|---|---|
| [Fill in one row for each item] |
Before initiating an inquiry, please prepare your product list, quantities listed by stock keeping unit (SKU), application details, and packaging requirements.
Use ScrewTrade's contact page to introduce your purchasing plan and arrange for the exchange of detailed specifications and supporting documents.
Determine which requirements are fixed and which require suggestions from the supplier. Request the supplier to provide a written response regarding the proposed product, order conditions, packaging, documentation, pricing, and timeline.
A complete inquiry sheet provides a clear starting point for both parties. Before placing an order, the confirmed requirements and agreed exceptions should be incorporated into the purchase order to ensure consistency between the quotation and the purchasing documents.
Other news you might be interested in

When a self-drilling screw spins against steel without making progress, the purchasing decision becomes urgent: should the installer change the tool settings, should the buyer order a different screw, or should the supplier investigate the batch?A useful diagnosis starts by identifying exactly where drilling stops. Record the material at that point, check the selected screw against the assembly, and then compare installation conditions. This approach gives buyers a clearer basis for deciding what to change and what evidence to request.

The global solar PV industry is growing rapidly. In 2025, global solar PV additions reached a record 510 GW. Distributed solar is expected to account for 42% of total global PV capacity additions from 2025 to 2030. As more commercial and industrial buildings install rooftop solar systems, the role of industrial fasteners is no longer limited to holding components in place; they must also meet requirements for structural load-bearing capacity, environmental durability, and roof waterproofing. This is driving the industry away from selecting individual fasteners in isolation and toward more application-specific integrated fastening systems that consider connection strength, material durability, installation quality, and roof integrity together.
Get in touch with us for more information about our services and products.