Ss304 Hex Socket Flat Head Cap Screw DIN7991
1> Description: Ss304 Hex Socket Flat Head Cap Screw DIN7991
2> Material: Stainless Steel 304
3> Surface: Passivated
4> Size: M6 to M24, 1/4" to 1"
5> Length: Up to 500mm
6> Mechanical Properties: A2-50/70
7> Packing: Bulk packing and box packing
We are a professional manufacturer of bolts such as Socket Cap Screws, Hex Head Screws, Carriage Bolts, Square Head Bolts, and more. Our products follow standards including DIN, GB, ANSI, ISO, JIS. We use imported equipment, materials, and matrices to ensure high-quality production. In addition to standard items, we also produce non-standard fasteners tailored to specific requirements.
Please feel free to contact us if you're interested in our products. With over 40 years of experience in the fastener industry and an ISO 9001 certification, we guarantee the best quality and service.
| Technical Delivery Conditions |
| Material |
Steel |
Stainless steel |
Non-ferrous metal |
| General requirements |
As specified in DIN 267 part 1 |
| Thread |
Tolerance |
6g |
| Standard |
DIN13 Part 12 & 15 |
| Mechanical properties |
Property class |
8.8 |
≤M20 |
A2-70 |
CuZn |
| A4-70 |
Copper |
| >M20 |
A2-50 |
Zinc Alloy |
| A4-50 |
........ |
| Other property classes or material subject to agreement |
| Standard |
ISO 898 Part 1 |
DIN267 Part 11 |
DIN267 Part 18 |
| Limit deviations geometrical tolerance |
Product grade |
A |
|
| Standard |
ISO 4759 Part 1 |
| Surface finish |
Blackened |
Bright |
Bright |
|
|
| DIN267 Part 2 shall apply with regard to surface roughness |
| DIN267 Part 19 shall apply with regard to permissible surface discontinuities |
| DIN267 Part 9 shall apply with regard to electroplating |
| If a different kind of electroplating or a different kind of surface protection is desired, this should be agreed upon at the time of ordering |
| Acceptance inspection |
DIN267 Part 5 shall apply with regard to acceptance inspection |
Q&A
Who is Lockey?
Lockey is a fastener manufacturer founded in 1973. Dragon Iron Group specializes in the manufacturing and sales of fasteners, hardware parts, forging, and machine parts for the automotive and other industries. The group's headquarters, Dragon Iron Enterprise, is located in A Lien, Taiwan. Lockey Industrial Co., Ltd. was established in 2003 in Dongguan City as the foreign sales department of the group. Our plant is based in Jingjiang City, which makes it easy for us to export our products.
What does Lockey do?
As a fastener manufacturer, we mainly produce, but are not limited to:
1. Bolts, studs, and threaded rods
2. Hex nuts, nylon nuts, flange locknuts
3. Tapping screws, drilling screws, wood screws, machine screws, socket cap screws
4. Plain washers, spring washers, tooth washers
5. Structural applications, ASTM A325/A490, ASTM F1852/F2280, DIN6914/5/6, DIN7990
Additionally, we offer special fasteners, hardware parts, forging, and machine parts for the automotive industry. We produce parts for Toyota, Honda, and others. 70% of our products are exported.
Why choose Lockey?
Lockey never stops innovating. Innovation is the driving force behind our development. Through technological and conceptual innovation, we continue to grow and improve. We have gathered a team of professionals who excel in management and cooperation. Contacting them will lead to satisfying results.
We are glad that you have chosen Lockey as your supplier, but we are more than just a supplier—we are partners. We don’t just sell; we share. We share the latest information on fasteners, price trends, and even profit. We are friends. We care about both our sales and yours, as well as the quality of the products during use.
How does Lockey ensure quality?
With over 40 years of experience in fastener manufacturing and an ISO 9001 certificate, we face challenges and solve them effectively. Lockey has established a quality assurance system based on ISO 9001. We have set criteria for factors that may affect quality. 80% of our staff are skilled and have worked with us for over five years. Employees attend skill training sessions for weeks, helping them prevent and handle issues efficiently.
Does Lockey produce non-standard items?
Yes, we do. Send your specifications to our sales representative, and you will receive a quotation.
Does Lockey have a published price list?
No, we do not. Market conditions in our business are always fluctuating, making it difficult to maintain standard pricing. Our sales team is flexible when quoting for your needs, ensuring you get the best possible price when you need it.
Does Lockey offer discounts?
Of course, we can offer discounts based on large quantities. However, as mentioned above, we believe our sales team has already offered you the best price. You may get a discount, but it won't be too large. Feel free to explore further.
Does Lockey provide samples?
Why not? Stored samples are completely free. However, we don’t have a budget for express shipping.
What is the delivery time?
It depends on the order quantity. Standard items take about 20–40 days, while non-standard ones take 35–60 days. Please check with your sales representative for an accurate shipment date.
What is the payment term?
T/T and L/C are preferred. Western Union is also acceptable for low-value payments, such as sample express fees.
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