Pan Head Screw
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Pan Head Screw

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Product Introduction

Pan head screws are designed with a choice between a slot and a cross slot for installation using an electric screwdriver. When using an electric screwdriver, the cross slot is generally preferred. These screws are primarily made from iron and stainless steel materials. The iron screws are available in low carbon, medium carbon, and high carbon steel variations, while the stainless steel screws are made from stainless steel 201, stainless steel 304, and stainless steel 316.
The thread tolerance for pan head screws is 6G. In terms of mechanical properties, the iron pan head screws are available in 4.8 and 8.8 grades. The 4.8-grade screws are made of ordinary steel and have a maximum allowable hardness of 255HV. On the other hand, the 8.8-grade screws are typically manufactured using wire rod 10B21, followed by a hydrogen removal process after hardening treatment.
There are also various surface treatment options available for pan head screws, including blue and white zinc, color zinc, black zinc, and white nickel, among others. These treatments can enhance the appearance and corrosion resistance of the screws.
In short, pan head screws come with different slot options for installation and are commonly made from iron or stainless steel materials. They have specific thread tolerances and mechanical properties depending on the grade. Additionally, there are several surface treatment choices to enhance their appearance and corrosion resistance.

Production Process of Countersunk Head Screw

Specification of Countersunk Head Screw

Here is a size chart for Pan Head Machine Screws with both Slotted and Phillips Drive options. This chart provides information about the different sizes available for these screws. It is essential to have a clear understanding of the available options before selecting the appropriate screw for your project. By referring to this chart, you can easily identify the specific size and drive type required for your application. Whether you prefer a Slotted or Phillips Drive, this chart offers a comprehensive overview of the available options for Pan Head Machine Screws.
Nominal Size	A		H		H1		J		T		M	G			Phillips Driver Size
	Head Dimensions		Height of Head				Width of Slot		Depth of Slot		Dimensions of Recess
	Head Dimensions		Slotted		Recessed						Diameter		Recess Penetration Gaging Depth
	Diameter		Slotted		Recessed						Diameter		Recess Penetration Gaging Depth
0	0.116	0.104	0.039	0.031	0.044	0.036	..023	0.016	0.022	0.014	0.06		0.032	0.014	0
2	0.167	0.155	0.053	0.045	0.062	0.053	0.031	0.023	0.031	0.022	0.097		0.052	0.034	1
3	0.193	0.18	0.06	0.051	0.071	0.062	0.035	0.027	0.036	0.026	0.105		0.061	0.043	1
4	0.219	0.205	0.068	0.058	0.08	0.07	0.039	0.031	0.04	0.03	0.115		0.071	0.053	1
5	0.245	0.231	0.075	0.065	0.089	0.079	..043	0.035	0.045	0.034	0.152		0.072	0.046	2
6	0.27	0.256	0.082	0.072	0.097	0.087	..048	0.039	0.05	0.037	0.159		0.08	0.055	2
8	0.322	0.306	0.096	0.085	0.115	0.105	0.054	0.045	0.058	0.045	0.175		0.097	0.071	2
10	0.373	0.357	0.11	0.099	0.133	0.122	0.06	0.05	0.068	0.053	0.192		0.113	0.089	2
12	0.425	0.407	0.125	0.112	0.151	0.139	0.067	0.056	0.077	0.061	0.252		0.124	0.098	3
1/4	0.492	0.473	0.144	0.13	0.175	0.162	0.075	0.064	0.087	0.07	0.274		0.144	0.118	3
5/16	0.615	0.594	0.178	0.162	0.218	0.203	0.084	0.072	0.106	0.085	0.343		0.173	0.149	4
3/8	0.74	0.716	0.212	0.195	0.261	0.244	0.094	0.081	0.124	0.1	0.382		0.213	0.19	4
1/2	0.987	0.958	0.281	0.26	0.348	0.325	0.106	0.091	0.161	0.131	0.428		0.26	0.235	4

Application Area of Countersunk Head Screw

Pan head screws are widely used and can be seen in all walks of life, such as medical equipment industry, wind power industry, aerospace industry, office equipment industry, petrochemical industry, electronics industry, communication industry, shipbuilding industry etc....

Application area of Countersunk Head Screw

How to Buy Countersunk Head Screw from Us?

Inquiry

There are two types of fasteners. One is standard parts, such as GB818, pan head screws. The other is non-standard parts. If you want standard pieces, you can tell the standard, size, grade (material), coating and quantity. For example, you want to buy ANSI B18.6.3,1/2, grade 2 and 20000pcs. If you want non-standard parts, you can show us samples, drawings or detailed instructions. Then our engineers will make technical drawings for you.

Price and payemnt

The price can be price/piece, or price/kg. We can quote EXW, FOB, CFR ,CIF with T/T, L/C, Western Union,etc. Or other ways agreed with customers.

Order

After checking, if the price and lead time are both ok, We will start to produce after advance payment according the requirements we promise.

Quality Insurance

We buy PICC PRODUCTS LIABILITY INSURANCE every year. We can agree in the contract that we will replace the goods or refund the money if there are some quality issues after you get our products. If quality problems happen after use, we will track the goods to deal the problems. And our insurance policy can cover your lost.

FAQ

Q1: Are you a factory or trading company?

A: We are manufacturer of hex bolts and nut for more than 20 years . We have two factories, one in Shanghai and the other in Jiangsu. Our production capacity can be 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples.

Q2: How many years you do foreign trade?

A: We have more than 20 years experience in exporting products to worldwide countries with our best quality. Now we have exported more than 40 countries, such as Spain, Germany, Italy, Belgium, United Kingdom, Lithuania, USA, Canada, Australia, Singapore,Japan, Thailand, Malaysia, South Korea,Indonesia, Egypt, Philippines and so on.

Q3: Do you have enough outputs?

A: We have enough stock in warehouses with abundant capital. We offer 24-hour services. For most common standards, we have them on stock, such as hex bolts, hex nuts, etc.

Q4: How to ensure that every process's quality?

A: First, we have technical drawings for each product when producing.

Second, our workers most have more than 10-years experience of doing hex bolts.

Third, our QC people will do inspection every 2 hours. If finding the bad parts, they will stop the porduction immediately.

Then,the finished parts will be checked again before shipment which insures every product's quality.

Q5: How to ensure the safety of long-distance transportation?

A: We pack into cartons first, and then pack cartons on pallets. The pallet is very easy to lift by Forklift wihch will protect the cartons from damage. Professional packing teams which keep every packing safely.

Q6: What products can you customize?

A:One is standard parts, such as DIN933, hex bolts. The other is Non-standard parts. If you want standard parts, you can tell the standard, size, grade(material) ,coating and quantity. For example, you want to buy DIN933, M12X60,grade 8.8, zinc plated and 20000pcs.

If you want non-standard parts, you can show us samples, drawings or detail descriptions. Then our engineer will do the technical drawings for you.

There are many, such as hexagon bolts, flange bolts, round head square neck bolts, as well as track bolts, U-bolts, T-bolts, flat head hexagon bolts, hex nuts, hex flange nuts .

Q7: Can you provide some sample?

A: Samples can be provided as your requirements.

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Countersunk Head Screw

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