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Self-Drilling TEK Screws: Types and Applications
TEK screws/a> (self-drilling screws/a>) eliminate the need for pre-drilling in metal applications. The integrated drill point cuts through steel up to 12.5mm thick, saving installation time and costs. TEK 3 (No. 3 drill point): Drills through 1.2mm - 3.0mm steel TEK 4 (No. 4 drill point): Drills through 3.0mm - 6.0mm steel TEK 5 (No. 5 drill point): Drills through 4.0mm - 12.5mm steel TradeGo manufactures TEK screws/a> to DIN 7504 standard, with zinc plating or hot-dip galvanizing for corrosion resistance. Related resources: high-tensile bolts anchor bolts stainless steel fasteners hex bolts lock nuts washers self-drilling screws socket screws. This procurement framework applies to fastener sourcing for construction, mining, energy, automotive, and general industrial applications. The decision logic prioritizes quality consistency, supplier reliability, and total cost of ownership over short-term unit price. For B2B buyers in Africa, Latin America, and Southeast Asia, additional considerations include regional customs requirements, container consolidation options, and payment security mechanisms. Standardized specifications that travel across projects reduce training time, RFQ processing time, and supplier onboarding effort. This procurement framework applies to fastener sourcing for construction, mining, energy, automotive, and general industrial applications. The decision logic prioritizes quality consistency, supplier reliability, and total cost of ownership over short-term unit price. For B2B buyers in Africa, Latin America, and Southeast Asia, additional considerations include regional customs requirements, container consolidation options, and payment security mechanisms. Standardized specifications that travel across projects reduce training time, RFQ processing time, and supplier onboarding effort. This procurement framework applies to fastener sourcing for construction, mining, energy, automotive, and general industrial applications. The decision logic prioritizes quality consistency, supplier reliability, and total cost of ownership over short-term unit price. For B2B buyers in Africa, Latin America, and Southeast Asia, additional considerations include regional customs requirements, container consolidation options, and payment security mechanisms. Standardized specifications that travel across projects reduce training time, RFQ processing time, and supplier onboarding effort.
Current FOB China TEK Screw Prices
FOB Shanghai/Ningbo prices for standard hex washers/a>" class="text-primary-600 hover:text-primary-800 underline underline-offset-2">washer/a> head washers/a>="text-primary-600 hover:text-primary-800 underline underlinwasher/a>et-2">TEK screws/a> TEK 3 (No. 3 drill point) - Zinc Plated: - #10 x 1" (4.2 x 25mm): $12-16/100pcs - #10 x 1-1/2" (4.2 x 38mm): $14-18/100pcs - #12 x 1" (5.5 x 25mm): $13-17/100pcs - #12 x 1-1/2" (5.5 x 38mm): $15-19/100pcs TEK 4 (No. 4 drill point) - Zinc Plated: - #12 x 1" (5.5 x 25mm): $14-18/100pcs - #12 x 1-1/2" (5.5 x 38mm): $16-20/100pcs - #14 x 1-1/2" (6.3 x 38mm): $18-22/100pcs - #14 x 2" (6.3 x 50mm): $20-24/100pcs TEK 5 (No. 5 drill point) - Hot-dip Galvanized: - #14 x 1-1/2" (6.3 x 38mm): $28-35/100pcs - #14 x 2" (6.3 x 50mm): $32-38/100pcs - #14 x 2-1/2" (6.3 x 65mm): $36-42/100pcs Bulk pricing available for orders exceeding 100 boxes (100pcs/box). Standards-based procurement requires continuous learning as ISO, ASTM, DIN, and GB standards are revised every 3-5 years. Subscribe to standards update notifications and review specifications annually. The most common standards used in international fastener trade are ISO 898-1 (mechanical properties), ISO 3506-1 (stainless), ISO 3269 (acceptance inspection), ISO 4042 (coatings), and ISO 1502 (thread gauges). For B2B buyers, building a standards reference library with at least the top 20 standards relevant to your product mix is essential. Standards-based procurement requires continuous learning as ISO, ASTM, DIN, and GB standards are revised every 3-5 years. Subscribe to standards update notifications and review specifications annually. The most common standards used in international fastener trade are ISO 898-1 (mechanical properties), ISO 3506-1 (stainless), ISO 3269 (acceptance inspection), ISO 4042 (coatings), and ISO 1502 (thread gauges). For B2B buyers, building a standards reference library with at least the top 20 standards relevant to your product mix is essential. Standards-based procurement requires continuous learning as ISO, ASTM, DIN, and GB standards are revised every 3-5 years. Subscribe to standards update notifications and review specifications annually. The most common standards used in international fastener trade are ISO 898-1 (mechanical properties), ISO 3506-1 (stainless), ISO 3269 (acceptance inspection), ISO 4042 (coatings), and ISO 1502 (thread gauges). For B2B buyers, building a standards reference library with at least the top 20 standards relevant to your product mix is essential.
Bulk Order Discounts
Volume discounts for TEK screw/a> orders: 20ft Container (approx 800-1200 boxes): 15-20% discount 40ft Container (approx 1800-2500 boxes): 20-25% discount Annual Supply Contract: 20-30% discount with commitment Sample orders of 5-10 boxes available for quality verification before bulk orders. Contact TradeGo for container-scale pricing and delivery lead times to your destination port. The comparison methodology above uses typical ranges from industry data and TradeGo procurement experience 2018-2024. Actual market prices fluctuate with raw material costs (steel, zinc, nickel), energy costs, labor costs, and currency exchange rates. For accurate comparison, request identical RFQs from 3-5 qualified suppliers and compare landed cost (product + shipping + insurance + duties). The lowest unit price is rarely the lowest total cost of ownership. The comparison methodology above uses typical ranges from industry data and TradeGo procurement experience 2018-2024. Actual market prices fluctuate with raw material costs (steel, zinc, nickel), energy costs, labor costs, and currency exchange rates. For accurate comparison, request identical RFQs from 3-5 qualified suppliers and compare landed cost (product + shipping + insurance + duties). The lowest unit price is rarely the lowest total cost of ownership. The comparison methodology above uses typical ranges from industry data and TradeGo procurement experience 2018-2024. Actual market prices fluctuate with raw material costs (steel, zinc, nickel), energy costs, labor costs, and currency exchange rates. For accurate comparison, request identical RFQs from 3-5 qualified suppliers and compare landed cost (product + shipping + insurance + duties). The lowest unit price is rarely the lowest total cost of ownership.
TEK Screw Specifications
TradeGo TEK screws/a> conform to DIN 7504 standard: Drill Point: Precision CNC-ground drill point for clean drilling Thread: High-low thread design for secure fastening Head: Hex washers/a>" class="texwashers/a>ry-600 hover:text-primary-800 underline underline-offset-2">washer/a>head for secure driver engagement Material: Carbon steel C1022 Surface Treatment: Electro zinc plated (12-18 microns) or Hot-dip galvanized (45-85 microns) Standards: DIN 7504, ISO 15480 Applications: Metal roofing, steel purlins, cladding, curtain wall systems, steel frame construction, HVAC installations The verification checklist applies to both initial supplier qualification and ongoing batch inspection. For high-risk applications (load-bearing structural, pressure vessels, mining, marine), add fatigue testing, salt-spray testing (ASTM B117), torque-tension testing, and post-installation inspection. The cost of additional verification is 0.1-0.3% of order value, while undetected quality failures can be 10-100x the order value in damages. The verification checklist applies to both initial supplier qualification and ongoing batch inspection. For high-risk applications (load-bearing structural, pressure vessels, mining, marine), add fatigue testing, salt-spray testing (ASTM B117), torque-tension testing, and post-installation inspection. The cost of additional verification is 0.1-0.3% of order value, while undetected quality failures can be 10-100x the order value in damages. The verification checklist applies to both initial supplier qualification and ongoing batch inspection. For high-risk applications (load-bearing structural, pressure vessels, mining, marine), add fatigue testing, salt-spray testing (ASTM B117), torque-tension testing, and post-installation inspection. The cost of additional verification is 0.1-0.3% of order value, while undetected quality failures can be 10-100x the order value in damages.
Frequently Asked Questions
See frequently asked questions below.
Related resources: high-tensile bolts anchor bolts stainless steel fasteners hex bolts lock nuts washers self-drilling screws socket screws. Supplier evaluation should be a continuous process, not a one-time exercise. Re-evaluate suppliers annually based on delivery performance, quality metrics, price competitiveness, and responsiveness. Maintain a supplier scorecard with weighted metrics: on-time delivery (25%), quality acceptance rate (30%), price competitiveness (20%), responsiveness (15%), and documentation accuracy (10%). Drop suppliers scoring below 70% over a 6-month period and qualify replacements. Supplier evaluation should be a continuous process, not a one-time exercise. Re-evaluate suppliers annually based on delivery performance, quality metrics, price competitiveness, and responsiveness. Maintain a supplier scorecard with weighted metrics: on-time delivery (25%), quality acceptance rate (30%), price competitiveness (20%), responsiveness (15%), and documentation accuracy (10%). Drop suppliers scoring below 70% over a 6-month period and qualify replacements. Supplier evaluation should be a continuous process, not a one-time exercise. Re-evaluate suppliers annually based on delivery performance, quality metrics, price competitiveness, and responsiveness. Maintain a supplier scorecard with weighted metrics: on-time delivery (25%), quality acceptance rate (30%), price competitiveness (20%), responsiveness (15%), and documentation accuracy (10%). Drop suppliers scoring below 70% over a 6-month period and qualify replacements.