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Home > Products > All Kinds Of Bolt > Others Bolt > Hex Socket Flat Head Screw DIN7991 Socket Screw

Hex Socket Flat Head Screw DIN7991 Socket Screw

Basic Info

Model No.:  LKBF

Product Description

Model NO.: LKBF

Type: Flat Head

Connection: Common Bolt

Standard: DIN, GB, ANSI

Sample: Free (If in Store)

Optional Material: Stainless Steel, Carbon Steel, Alloy Steel, Brass

Optional Finish: Zinc, HDG, Magni, Geomet, Dacromet, Passivate.....

Trademark: LK

Specification: DIN, ANSI, ISO and Non-Standard

HS Code: 7318150000

Material: Stainless Steel

Groove: Hexagon

Head Style: Round

Grade: A2-70

Market: Global

Optional Properties: A2/4-50/70/80, Class 6.8/8.8/10.9, Grade 2/5/8....

Optional Size: M6 to M24, or 1/4" to 1"

Transport Package: Bulk Packing, Small Box Packing

Origin: China

Hex Socket Flat Head Screw DIN7991 Socket Screw

1> Decription: Hex Socket Flat Head Screw DIN7991 Socket Screw

2> Material: Stainless Steel

3> Surface: Passivate

4> Size: M6 to M24, 1/4" to 1"

5> Length: Up to 500mm

6> Mechanical Properties: A2/4-50/70

7> Packing: Bulk packing and box packing

We professionally produce Bolts such as Socket Cap Screw, Hex head screw, Carriage Bolt, Square Head Bolt etc. The product standard contains DIN, GB, ANSI, ISO, JIS. Imported equipments, materials and matrixes are used in the company. We also make high quality product which is not standard.

Please feel free to contact us if you are interesting our products. We are strongly believe will guarantee you the best quality and service for our more than 30 years professional experience.

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
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
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 electropiating
If a different kind of eletroplating or a different kind of surfaceprotection is
desired, this should be agreed upon at the time of ordering
Acceptance inspection DIN267 Part 5 shall apply with regard to acceptance inspection


Who Lockey is?

A fastener manufacture founded in 1973. Dragon Iron Group devotes itself to the manufacture and sales of fasteners, hardware parts, forging and machine parts for Auto and other industries.

Dragon Group has its headquarter, Dragon Iron Enterprise, in A Lien, Taiwan.

Lockey Industrial Co., Ltd. set up in 2003 in Dongguan City to be the Foreign Sales Department of the group. Our plant was established in Jingjiang City. In that way, we can easily export our products .

What Lockey does?

As a fastener manufacture, we mainly produce including, but not only:

1. Bolt, studs, and thread rods...

2. Hex Nut, nylon Nut , flange locknut...

3. Tapping Screw, Drilling Screw, wood screw, Machine Screw, socket cap screw...

4. Plain washer, spring washer, tooth washer...

5. Structural applications, ASTM A325/A490, ASTM F1852/2280, DIN6914/5/6, DIN7990...

Meanwhile, special fasteners, hardware parts, forging and machine parts for Auto are also in our range. We make parts for Toyota, Honda.

70% of our products are exported.

Why Lockey?

Lockey never stops doing one thing: INNOVATE. Innovation is the permanent power for the development of Lockey. Technology innovation and concept innovation, keep Lockey going well and going further. Meanwhile, Lockey gathered a group of talents who good at management and co-operation. Go and contact with these professional man, you will get a satisfied result.

We are glad that you choose Lockey as your supplier, but Lockey more than a supplier. We are partner. We do not only sell, we share. Share the newly info of fastener, price trend...we also share profit.

We are friend. We do not only care our sales, but also yours; and the quality in using.

What Lockey do to assure the quality?

As a over 40 years experience in fastener manufacture with ISO9001 certificate, we meet difficulties or problems, and we solve them all ways. Lockey set up a quality assurance system according to ISO9001 with the 40 years experience. Criteria were made on factors that may effect the quality. 80% of our staff are skilled, and have worked in Lockey for more than 5 years, employee have to take skill class on/off work for weeks. All of these is to guide our worker how to prevent and handle an issue.

Do Lockey produce non-standard item?

Yes, we do. Send your specification drawings to our sales representative, then you will get a quotation.

Do lockey have a published price list?

We do NOT have a published price list. In our business market conditions are always fluctuating, which makes standard pricing difficult to maintain. We allow our sales staff to be flexible when it comes to quoting on your requirements, which means that you will receive the best pricing available when you need it.

Do Lockey offer a discount?

Of course. we can offer you a discount base on your large quantity. But at the same time, like what we said above, we believe our sales staff have offered you the best price. In that way, you may have a discount, but not a big one. Go and explore for it.

Do Lockey provide samples?

Why not, and stored samples are totally free. What we are going to tell you is that we do NOT have budget for Express.

What's the delivery time?

It depends on your order quantity. It is about 20-40 days for standard ones, 35-60 days for non-standard ones. Check it with sales representative, he/she will give a accurate date of shipment.

What is the payment term?

T/T & L/C are the prefer payment term. Also Western-Union is acceptable for low value payment, like samples' Express fee.

Contact us if you need more details on Socket Screw. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Socket Flat Head Screw、Cap Screw. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : All Kinds Of Bolt > Others Bolt