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Countersunk Head Self-dilling Screw

Material: C1022,SUS410,SUS304,SUS304 Bi-metal
Coating: Zinc plating, Yellow zinc, Dacromet, Ruspert
Standard: DIN7504P
Head: Countersunk head,Hex Head,Truss head,Wafer head,Pan head,Bugle head

Category:

Screw Series

E-mail:

info@hfastfix.com

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Description

Countersunk head self-drilling screws are designed to provide a flush or near-flush finish when driven into a material. The head is countersunk, meaning it has a conical shape that allows the screw to sit below the surface of the material.

Features

★ Countersunk Head: The conical shape of the head allows for a flush or near-flush finish.
★ Self-Drilling Tip: The pointed tip enables the screw to drill into metal without pre-drilling.
★ Thread Formation: The screw forms its own threads as it is driven in, ensuring a secure connection.

Dimensions (d*L)mm

6#	7#	8#	10#	12#	14#
3.5*10	3.9*10	4.2*13	4.8*13	5.5*19	6.3*25
3.5*13	3.9*13	4.2*16	4.8*16	5.5*25	6.3*32
3.5*19	3.9*16	4.2*19	4.8*19	5.5*32	6.3*38
3.5*25	3.9*19	4.2*25	4.8*25	5.5*38	6.3*50
3.5*32	3.9*25	4.2*32	4.8*32	5.5*50	6.3*75
	3.9*32	4.2*38	4.8*38	5.5*63	6.3*80
	3.9*38	4.2*50	4.8*50	5.5*75	6.3*100
				5.5*95	6.3*110
				5.5*100	6.3*120
					6.3*130
					6.3*140
					6.3*150

Technical Data

Item	3.5	3.9	4.2	4.8	5.5	6.3
Torsional Strength (kg/cm)	24 min	28 min	42 min	61 min	92 min	150 min
Case Hardness (Hv/0.3kg)	560-730	560-730	560-730	560-730	560-730	560-730
Drilling Time (sec)	4	4	5	7	11	13
Drilling Thickness	1+1	1+1	1.5+1.5	2+2	2+3	2+3

Production scene

Wire darwing

Anealing

Heading

Pinch pointing

Threading

Heat treatment

Cotating

Packing

About our company

Hebei Hengcheng Fastener Co., Ltd is a National High-tech Enterprise, established in Hebei Yongnian in 1998, specializing in the production and sales of fasteners including Nuts, Bolts, Drop in anchor, Strong anchor, Self-drilling screw, Self-tapping screw, Drywall screw and Customized cold forging parts. The company covers an area of 70,000 square meters with about 150 staff at present, and among which there are over 30 senior technicians and 30 salesmen. To guarantee the quality, the company applies the world-advanced facilities for production including machines of cold forging,hot forging, threading,wire drawing,annealing,heat treatment and other ancillary equipment. With more than 20 years’ development, the company becomes one of the largest manufacturing enterprises in the fastener industry of North China.

The company has passed the ISO9001:2015 international quality system certification, the trade mark “HF” is honored “Well-Known Trade Mark of Hebei Province”, meanwhile, the product is honored “Famous-Brand Product” by the Authority. The company is an export-oriented enterprise and the products are exported to more than 80 countries and regions, such as South Korea, Japan, America, Southeast Asia, Middle East and Africa and enjoyed a good reputation among customers. The company is dedicated to supply the best products and services to customers and would like to express sincere invitation to friends from all over the world.

HFAST

● Metal Construction: Attaching metal components in various structures, such as buildings, machinery, and vehicles.
● Electrical Panels: Mounting electrical components and wiring.
● General Metal Fabrication: Joining metal sheets, plates, and profiles.
● HVAC Systems: Securing ductwork, components, and insulation.
Regular packing way

★ small box+carton
★ small bag+carton
★ bulk in carton
★ bulk in plastic box