When requesting quotes for fasteners, providing complete and accurate technical and commercial information can significantly improve quotation efficiency, avoid repeated communication, and ensure that suppliers provide accurate unit prices and delivery dates.

The following are essential core information for quotations, organized by priority:

I. Basic Product Information (Most crucial, determining the basis for quotation)

1. Product Type: Clearly define the specific fastener types, such as: hex head bolts, hex nuts, machine screws, self-tapping screws, washers (flat washers/spring washers/combination washers), threaded rods, pins, non-standard custom parts, etc.

2. The applicable standard (crucial! Directly determines dimensions, tolerances, and performance requirements) must be specified with the standard code.

   Common standards include:

◦ Chinese National Standard: GB/T (e.g., GB/T 5782 Hex Head Bolts, GB/T 6170 Hex Nuts)

◦ German Standard: DIN (e.g., DIN 933 Fully Threaded Bolts, DIN 934 Hex Nuts)

◦ American Standard: ANSI/ASME, IFI (e.g., ANSI B18.2.1 American Standard Hex Bolts)

◦ Japanese Standard: JIS,

◦ International Standard: ISO

◦ If there is no universal standard, it must be specified as "Non-standard" and drawings/samples must be provided.

3. Specifications and Dimensions (accurate to millimeters/inches)

◦ Metric: Thread specification (e.g., M6, M8×1.25 fine thread), length (e.g., 20mm, 50mm, specify "full thread/half thread"), head thickness/width, groove type (Phillips head/slotted head/hex socket), etc.;

◦ US Standard: Thread specification (e.g., 1/4-20UNC, 3/8-16UNF), length (e.g., 1", 2-1/2");

◦ Non-standard parts: 2D drawings (CAD/PDF) or key dimensions (diameter, length, thread length, head size, chamfer, etc.) are required. 

4. Material (affecting strength, corrosion resistance, and price)

Common materials and labeling methods:

◦ Carbon steel: 1008, 1018, 10B21, 45# steel (must specify whether heat treatment is required);

◦ Stainless steel: SUS304 (A2), SUS316 (A4), 410 stainless steel;

◦ Alloy steel: Grade 8.8, Grade 10.9, Grade 12.9 (corresponding materials such as 40Cr, 35CrMo);

◦ Others: Copper (H59/H62), Aluminum (6061), Nylon, etc.

5. Mechanical Performance Grade (Core Indicators for Bolts/Nuts)

◦ Bolts/Screws: e.g., 4.8, 8.8, 10.9, 12.9 (carbon steel); A2-70, A4-80 (stainless steel);

◦ Nuts: e.g., 6, 8, 10 (matching the corresponding bolt grade);

◦ Washers: e.g., HV200-HV300 (hardness), elasticity grade (spring washers).

6. Surface Treatment (Corrosion Protection/Appearance Requirements, directly affecting cost)

Common treatments: galvanizing (blue-white zinc/color zinc/black zinc), hot-dip galvanizing, Dacromet coating, nickel plating, tin plating, blackening, phosphating, passivation (natural stainless steel color), Teflon coating, etc.

Specify whether "environmental protection" (e.g., RoHS, REACH compliance) is required.

II. Business and Procurement Information (Affecting Unit Price, Delivery Time, and Packaging)

1. Purchase Quantity (MOQ, batch size, determining unit price tiers) must be clearly stated: total purchase quantity, whether delivery is in batches (e.g., initial order of 10,000, subsequent monthly orders of 20,000). Larger quantities generally result in lower unit prices.

2. Tolerance and Precision Requirements: Grade A (precision), Grade B (general), Grade C (coarse thread), or specify "according to standard tolerances" or "high precision (±0.02mm)". For non-standard parts, tolerances must be indicated on the drawings.

3. Packaging Requirements:

◦ Inner Packaging: bulk, plastic boxes, plastic bags, paper tubes (e.g., 100 pieces/bag);

◦ Outer Packaging: cartons, pallets (whether export fumigation pallets are required), whether labels are affixed (indicating specifications, material, quantity, and batch number);

◦ Special Requirements: moisture-proof packaging, anti-static packaging, etc.

4. Certification and Testing Requirements (Essential for Export/High-End Scenarios)

◦ Material Certification: SGS material report, spectral analysis report;

◦ Performance Testing: tensile test, hardness test, salt spray test report (e.g., 48-hour/96-hour salt spray);

◦ System Certification: ISO9001, IATF16949 (automotive parts), ISO14001;

◦ Export Certification: CE, RoHS, REACH, FDA (food grade).

5. Delivery Time and Location

◦ Expected Delivery Time: e.g., "delivery within 15 days," "30-day phased delivery";

◦ Delivery Location: Domestic factory/port (e.g., Shanghai Port, Ningbo Port), overseas destination (affects freight calculation).

6. Payment Terms: e.g., 100% by T/T in advance for those order amount  less than usd5000; 30% deposit in advance + balance before shipment, letter of credit (L/C),affecting supplier's capital cost calculation.

III. Special Additional Requirements (Required for Non-standard/Customized Parts)

1. Non-standard Customization Instructions: For non-standard parts, drawings (including dimensions, tolerances, surface treatment, and materials) or samples must be provided, specifying "processed according to drawing";

2. Application Scenarios: Such as automotive, machinery, construction, outdoor corrosion protection, food equipment, etc., to help suppliers match materials/processing techniques;

3. Brand Requirements: Whether to specify the original manufacturer's brand (such as Jinyi, Dongming, Nord-Lock), or "alternative brands" (with better prices);

4. Others: Such as whether anti-slip teeth, locking function (such as nylon lock nuts), chamfering requirements, thread go/no-go gauge testing, etc. are required.

IV. Request for Quotation Template (Simplified Version, Direct Application)

Product Type: Hex Head Bolt Standard: GB/T 5782

Specification: M10×50 Partial-thread

Material: 10B21 Carbon Steel Performance

Grade: 8.8

Surface Treatment: Environmentally Friendly Color Zinc

Quantity: 50,000 pieces

Packaging: 100 pieces/plastic bag, carton

Delivery Time: 20 days after contract signing

Delivery Location: Shanghai Port

Payment Method: 30% prepayment, balance due before shipment

Certification Requirements:MTC + CO

The core of fastener quotations is "standard + specification + material + surface treatment + quantity," these 5 items determine the basic quotation; business terms (delivery time, payment, certification) affect the final cost and feasibility of cooperation. Non-standard parts must be accompanied by drawings to avoid invalid quotations due to dimensional deviations. After providing complete information, suppliers can quickly provide accurate quotations, reducing the time cost of repeated confirmations. Provide a detailed fastener quotation template. How to determine if the fastener material meets the requirements? How much do fasteners with different surface treatments differ in price?