Self Drilling Screws

Name: China Self Drilling Screws Manufacturers Suppliers - Self Drilling Screws Made in China
Brand: Promisteel
SKU: 247774411

Name: Self Drilling Screws
Brand: Promisteel
Grade:Metric (e.g., M4, M5, M6), Imperial (e.g., #8, #10)
Diameter Range: 2mm-12mm
Length Range: 5mm-200mm
Surface Treatment: Zinc plating, black oxide, electrophoresis, etc.
MOQ: 25tons
Application: Construction Industry,Mechanical Manufacturing,Electronics Industry,Furniture Manufacturing
Capacity:10000 Ton/month
Delivery: 20-45 days
Payment: T/T, L/C, etc

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Product Introduction

Self-drilling screws, also known as self-drilling or drill bit screws, are metal fasteners engineered for efficiency and precision. These screws are designed to drill directly into materials and create threads in one action, eliminating the need for pre-drilling. Manufactured using high-quality steel and subjected to rigorous quality control, our

high-performance self drilling screws offer reliable and durable

metal fastening solutions.

Product Features

Material & Craftsmanship

Our self-drilling screws are made from high-carbon steel or stainless steel, formed through cold forging. They undergo precise heat treatment to achieve an ideal balance of hardness and toughness, ensuring long-lasting performance.

Precision Sizing

The diameter and length of each screw are controlled within a tolerance of ±0.02mm, meeting the demands of high-precision applications.

Surface Treatment

Various surface finishes, including electroplating, hot-dip galvanizing, black oxide, passivation, electrophoresis, and chrome plating, are available to enhance rust resistance and aesthetic appeal.

These precision-engineered fasteners are ideal for

corrosion-resistant metal screws applications.

Drill Tip Design

Available in flat, round, and pan head shapes, the drill tips are crafted from special carbide materials with optimized spiral grooves for faster drilling speed and reduced risk of material breakage.

Thread Specifications

Conforming to ISO, DIN, and ANSI international standards, our screws are available in both metric and imperial threads to accommodate different regional needs.

Technical Specifications

Material: High-carbon steel, stainless steelHardness Range: HRC 45-58 (varies by material and specification)

High-performance self drilling screws designed for tough materials.

Drill Tip Type: CarbideSurface Treatment: Zinc plating, black oxide, electrophoresis, etc.Thread Specifications:Metric (e.g., M4, M5, M6), Imperial (e.g., #8, #10)Tolerance Level: 6gDiameter Range: 2mm-12mmLength Range: 5mm-200mmPackaging: 20kg per carton, fumigated wooden pallets, 45 cartons per pallet, wrapped with moisture-proof film

Specifications of SDS Unit: mm
Nominal Diameter	Thread Specification	Number of Threads	Thread Height	Pitch	Tolerance Code
0.073(#1) 1.854	1-64UNO	64	0.236	0.397	2A
					3A
	1-72UNF	72	0.21	0.353	2A
					3A
0.086(#2) 2.184	2-56UNC	56	0.271	0.454	2A
					3A
	2-64UNF	64	0.236	0.397	2A
					3A
0.099(3#) 2.515	3-48UNC	48	0.315	0.529	2A
					3A
	3-56UNF	56	0.271	0.454	2A
					3A
0.112(#4) 2.845	4-40UNC	40	0.378	0.635	2A
					3A
	4-48UNF	48	0.315	0.529	2A
					3A
0.125(#5) 3.175	5-40UNC	40	0.378	0.635	2A
					3A
	5-44UNF	44	0.344	0.577	2A
					3A
0.138(#6) 3.505	6-32UNC	32	0.472	0.794	2A
					3A
	6-40UNF	40	0.378	0.635	2A
					3A
0.164(#8) 4.166	8-32UNC	32	0.472	0.784	2A
					3A
	8-36UNF	36	0.421	0.706	2A
					3A
0.19(#10) 4.826	10-24UNC	24	0.63	1.058	2A
					3A
	10-28UNS	28	0.54	0.907	2A
	10-32UNF	32	0.472	0.784	2A
					3A
	10-36UNS	36	0.421	0.706	2A
	10-40UNS	40	0.378	0.635	2A
	10-48UNS	48	0.315	0.529	2A
	10-56UNS	56	0.271	0.454	2A
0.216(#12) 0.486	12-24UNC	24	0.63	1.058	2A
					3A
	12-28UNF	28	0.54	0.907	2A
					3A
	12-32UNEF	32	0.472	0.784	2A
					3A
	12-36UNS	36	0.421	0.706	2A
	12-40UNS	40	0.378	0.635	2A
	12-48UNS	48	0.315	0.529	2A
	12-56UNS	56	0.271	0.454	2A
0.25" 6.35	1/4-20UNC	20	0.756	1.27	1A
					2A
					3A
	1/4-24UNS	24	0.63	1.058	2A
	1/4-27UNS	27	0.56	0.941	2A
	1/4-28UNF	28	0.54	0.907	1A
					2A
	1/4-32UNEE	32	0.472	0.784	2A
					3A
	1/4-36UNS	36	0.421	0.706	2A
	1/4-40UNS	40	0.378	0.635	2A
	1/4-48UNS	48	0.315	0.529	2A
	1/4-56UNS	56	0.271	0.545	2A
0.3125" 7.9375	5/16-18UNC	18	0.841	1.411	1A
					2A
					3A
	5/16-20UN	20	0.756	1.27	2A
					3A
	5/16-24	24	0.63	1.058	1A
					2A
					3A
	5/8-27UNS	27	0.56	0.941	2A
	5/8-28UN	28	0.54	0.907	2A
					3A
	5/8-32UNEF	32	0.472	0.784	2A
					3A
	5/8-36UNS	36	0.421	0.706	2A
	5/8-40UNS	40	0.378	0.635	2A
	5/8-48UNS	40.31	0.315	0.529	2A
0.325" 8.255	3/8-16UNC	18	0.841	1.411	1A
					2A
					3A
	3/8-18UNS	18	0.841	1.411	2A
	3/8-20UN	20	0.756	1.27	2A
					3A
	3/8-24UNF	24	0.63	1.058	1A
					2A
					3A
	3/8-27UNS	27	0.56	0.941	2A
	3/8-28UN	28	0.54	0.907	2A
					3A
	3/8-32UNEF	32	0.472	0.784	2A
					3A
	3/8-36UNS	36	0.421	0.706	2A
	3/8-40UNC	40	0.378	0.635	2A
0.39" 9.906	0.390-27UNS	27	0.56	0.941	2A
0.4375" 11.11	7/16-14UNC	14	1.081	1.814	1A
					2A
					3A
	7/16-16UNS	16	0.86	1.588	2A
					3A
	7/16-18UNS	18	0.841	1.411	2A
	7/16-20UNF	20	0.756	1.27	1A
					2A
					3A
	7/16-24UNS	24	0.63	1.058	2A
	7/16-27UNS	27	0.56	0.941	2A
	7/16-28UNEF	28	0.54	0.907	2A
					3A
	7/16-32UN	32	0.472	0.784	2A
					3A
0.5" 12.7	1/2-13UNC	13	1.163	1.954	1A
					2A
					3A
	1/2-12UNS	12	1.26	2.117	2A
					3A
	1/2-14UNS	14	1.081	1.814	2A
	1/2-16UNS	16	0.86	1.588	2A
					3A
	1/2-18UNS	18	0.841	1.411	2A
	1/2-20UNF	20	0.756	1.27	1A
					2A
					3A
	1/2-24UNS	24	0.63	1.058	2A
	1/2-27UNS	27	0.56	0.941	2A
	1/2-28UNEF	28	0.54	0.907	2A
					3A
	1/2-32UN	32	0.472	0.784	2A
					3A
The specifications can be customized according to customer requirements. For more details, please contact a Promisteel® sales manager.

Applications

Construction Industry: Ideal for securing metal roofing, curtain walls, and light steel frameworks. Perfect for self drilling screws for matal roofing or

stainless steel self drilling screws in industrial settings.

Mechanical Manufacturing: Used in assembling machinery, such as automation equipment and conveyor supports.

Electronics Industry: Suitable for fastening electronic device housings and circuit boards.

Furniture Manufacturing: Perfect for assembling and connecting metal furniture.

Usage Guidelines

Select the appropriate self-drilling screw specifications based on the hardness and thickness of the material to be drilled.

Ensure the power supply, drill, and other auxiliary equipment are safe and suitable before use.

Install the screws correctly to avoid skewing or overexertion, which may cause breakage.

Store in a dry, ventilated area to prevent moisture and rust.

After-Sales Service

We provide detailed product manuals and installation guidance. Customer inquiries are promptly addressed, and we offer returns or exchanges within the warranty period.

Purchase Tips

Choose the right product specifications and quantities based on your actual needs. For custom specifications or bulk orders, please contact a Promisteel® sales manager for detailed consultation.

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