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Hex Washer Head Long Drill Point Screws

Home / Products / Hex Washer Head Screws / Hex Washer Head Long Drill Point Screws
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.

Hex Washer Head Long Drill Point Screws

Product Introduction

Hex Washer Head Long Drill Point Screws are carbon steel self-drilling fasteners with a #5 long drill point, designed for fastening thicker steel sections, metal panels, and multi-layer assemblies with efficient drilling and secure hex-head engagement.

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Core Advantages Application Scenarios OEM / ODM Services Why Choose Us FAQ Technical Parameters Inquiry Form

Core Advantages

1. Long Drill Point for Thick Material

The #5 drill point provides a 12–18 mm drill point length and is designed for fastening applications requiring a longer drilling section. Depending on the selected size, the specified fixture thickness range reaches 30–250 mm, making this Long Drill Point Screw suitable for thicker and multi-layer assemblies.

2. Stable Hex Washer Head

The Hex Washer Head Screw design provides a stable driving surface for socket tools. The Across Flats dimension is 7.78–8.00 mm, while the head height is 5.1–5.8 mm, supporting controlled installation torque and secure tool engagement.

3. Wide Length Selection

The Hex Washer Head Long Drill Point Screws are available from 75 to 280 mm in nominal length. This range allows distributors, wholesalers, and contractors to select suitable fasteners for different material thicknesses and assembly depths.

4. Integrated Washer for Stable Contact

The head incorporates a washer with a specified diameter of 14–16 mm and thickness of 0.9–1.2 mm. This helps increase the contact area between the Hex Washer Head Screw and the fastening surface, supporting a stable connection after installation.

5. Carbon Steel with Zinc-Plated Finish

Made from carbon steel and finished with blue-white zinc, these screws provide a practical solution for general construction and industrial fastening. The surface treatment also provides a consistent finish for bulk fastener distribution.

Application Scenarios

Hex Washer Head Long Drill Point Screws are designed for applications where a standard short drill point may not provide sufficient drilling depth.

Thick steel structure fastening
Metal roofing and cladding
Sandwich and insulated panel installation
Steel beam and purlin fastening
Metal-to-metal construction
Industrial steel assembly
Long-reach fastening applications
Construction and structural components

OEM / ODM Services

As a direct screw manufacturer, we provide OEM and ODM customization for bulk orders according to customer drawings and technical requirements.

Available customization options include:

Custom head height
•Custom raw material wire diameter
•Custom washer thickness
•Custom screw length
•Custom packaging

Why Choose Us

1. Integrated R&D, Production, Sales, and Service

Founded in 2011, we are a comprehensive hardware enterprise integrating R&D, production, sales, and service. With in-house manufacturing and direct factory supply, we can control quality, cost, and lead time more effectively than trading companies.

2. Certified Quality Management System

We hold ISO 9001:2015 certification for our quality management system, covering the production of fasteners. This ensures consistent quality control and reliable production standards for bulk orders.

3. Wide Product Portfolio and Application Coverage

Our products cover construction hardware, furniture hardware, automotive hardware accessories, and precision mechanical parts, widely used in residential construction, commercial facilities, transportation vehicles, electronic equipment, and other industries.

FAQ

Q1: What sizes are available for Hex Washer Head Long Drill Point Screws?

The available diameters are 5.5 and 6.3 mm, with nominal lengths from 75 to 280 mm.

Q2: What material are the Hex Washer Head Screws made from?

The screws are manufactured from carbon steel with a blue-white zinc surface treatment.

Q3: What is your payment term?

Our standard payment term is Cash on Delivery (COD). The customer completes payment after receiving the goods and confirming they are correct.

Q4: Can the Hex Washer Head Long Drill Point Screws be customized?

Yes. OEM/ODM customization is available for head height, raw material wire diameter, washer thickness, screw length, and packaging.

Q5: What are the MOQ and lead time?

The standard MOQ is 50,000 pieces, with a production lead time of approximately 45 days.

Item 6.3/5.5x75 6.3/5.5x115 6.3/5.5x135 6.3/5.5x155 6.3/5.5x185 6.3/5.5x205 6.3/5.5x240 6.3/5.5x280
L (Overall Length) 73-76 113-118 132-138 152-160 180-190 200-210 235-245 275-285
L1 (Drill Point Length) 12-15 13-18 13-18 13-18 13-18 13-18 13-18 13-18
L2 (Threaded Length) 36-40 48-52 48-55 48-60 60-70 60-75 60-75 60-75
H (Head Height) 5.1-5.5 5.1-5.5 5.1-5.5 5.1-5.8 5.1-5.8 5.1-5.8 5.1-5.8 5.1-5.8
U (Head Undercut / Washer Thickness) 0.9-1.2 0.9-1.2 0.9-1.2 0.9-1.2 0.9-1.2 0.9-1.2 0.9-1.2 0.9-1.2
P1 (Pitch 1) 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8
P2 (Pitch 2) 1.06 1.06 1.06 1.06 1.06 1.06 1.06 1.06
D (Major Diameter) 4.5-4.6 4.5-4.6 4.5-4.6 4.5-4.6 4.5-4.6 4.5-4.6 4.58-4.7 4.58-4.7
D1 (Shoulder Diameter) 6.02-6.25 6.02-6.25 6.02-6.25 6.02-6.25 6.02-6.25 6.1-6.25 6.1-6.25 6.1-6.25
D2 (Minor Diameter) 5.25-5.48 5.25-5.48 5.25-5.48 5.25-5.48 5.25-5.48 5.25-5.48 5.25-5.48 5.25-5.48
DP (Drill Point Diameter) 4.9-5.1 4.9-5.1 4.9-5.1 4.9-5.1 4.9-5.1 4.9-5.1 4.9-5.1 4.9-5.1
T (Head Diameter / Washer Diameter) 14-16 14-16 14-16 14-16 14-16 14-16 14-16 14-16
B (Washer Thickness) 10-11 10-11 10-11 10-11 10-11 10-11 10-11 10-11
e (Across Corners) 8.71 8.71 8.71 8.71 8.71 8.71 8.71 8.71
S (Across Flats) 7.78-8 7.78-8 7.78-8 7.78-8 7.78-8 7.78-8 7.78-8 7.78-8
R (Radius) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Drill No. (Drilling Number) 5# 5# 5# 5# 5# 5# 5# 5#
Fixing detail thickness 30-50 50-85 65-110 85-130 100-155 120-175 155-210 195-250

Full Thread Series 5# Drill Point 24 Threads
length 25 32 38 50 63 75
L 23.5-25 31-32 36.5-38 48.5-50 62-63.5 73.5-75

Parameter Specification
Product Type Hex Washer Head Long Drill Point Screws
Material Carbon Steel
Surface Treatment Blue White Zinc
Packaging Carton / Paper Box / Plastic Bag
MOQ 50,000 pcs
Lead Time 45 days


（Notes）
1. EPDM metal-rubber composite washer: Unless otherwise specified, the default standard is: Metal sheet thickness 0.50mm (+/-0.1mm), Rubber thickness 2mm (+/-0.2mm).
2. The standard default is equipped with a 16 mm metal-rubber composite washer.
3. Mass production is subject to the order requirements.

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About Us
Ningbo Zhenrui Hardware Industrial Co., Ltd.

Founded in 2011, we are a comprehensive hardware enterprise integrating R&D, production, sales, and services. Since our establishment, we have adhered to the philosophy of "Innovation-driven, Customer-oriented, Integrity for Win-Win Cooperation". Focused on manufacturing, we are committed to supplying high-quality products to customers. With years of steady development, we have grown into an influential player in the industry.

Our product portfolio covers construction hardware, furniture hardware, automotive hardware accessories, and precision mechanical parts, widely used in residential construction, commercial facilities, transportation vehicles, electronic equipment, and many other industries. By introducing advanced production equipment and technologies, along with a strict quality control system, we ensure that every product meets or exceeds customer expectations.

We advocate a people-oriented corporate culture, value employees’ growth and well-being, and foster a harmonious work environment. The company has formulated basic management systems in accordance with laws. Currently, we are steadily advancing toward group-based, specialized, and international development.

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  • Quality Management System Certificate
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