China OEM China Grade M2-M20 Flat Head Hex Socket Cap Screw
We stick to our enterprise spirit of "Quality, Performance, Innovation and Integrity". We purpose to create a lot more price for our prospects with our rich resources, innovative machinery, experienced workers and great products and services for China OEM China Grade M2-M20 Flat Head Hex Socket Cap Screw, Our ultimate goal is always to rank as a top brand and also to lead as a pioneer in our field. We are sure our productive experience in tool creation will get customer's trust, Wish to co-operate and co-create an even better long term with you! We stick to our enterprise spirit of "Quality, Performance, Innovation and Integrity". We purpose to create a lot more price for our prospects with our rich resources, innovative machinery, experienced workers and great products and services for China Alloy Steel Hex Socket Flat Head Screw, Metric Socket Head Cap Screws, We aspire to meet the demands of our customers globally. Our range of products and services is continuously expanding to meet customers' requirements. We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!

ASTM A307 Grade A Hex Bolts Hex Cap Screws

Standard: ASME B18.2.1

(Various types of configuration are also available)

Thread Size: 1/4”-4” with various lengths

Grade: ASTM A307 Grade A

Finish: Black Oxide, Zinc Plated, Hot Dip Galvanized, Dacromet, and so on

Packing: Bulk about 25 kgs each carton, 36 cartons each pallet

Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports

Please feel free to contact us for more details.

ASTM A307

The ASTM A307 specification covers carbon steel bolts and studs ranging from 1/4″ through 4″ diameter. This is your everyday, run of the mill bolt specification often manufactured using A36 round bar. There are three grades A, B, and C* which denote tensile strength, configuration, and application. Refer to the Mechanical Properties Chart for the subtle strength differences within each grade.

A307 Grades

A Headed bolts, threaded rods and bent bolts intended for general applications.
B Heavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges.
C* Nonheaded anchor bolts, either bent or straight, intended for structural anchorage purposes. The end of a grade C anchor bolt intended to project from the concrete will be painted green for identification purposes. Permanent marking is a supplemental requirement. *As of August 2007, grade C has been replaced by specification F1554 grade 36. We will continue to supply grade C, if required by the project.

A307 Mechanical Properties

Grade Tensile, ksi Yield, min, ksi Elong %, min
A 60 min -- 18
B 60 - 100 -- 18
C* 58 - 80 36 23

A307 Chemical Properties

Element Grade A Grade B
Carbon, max 0.29% 0.29%
Manganese, max 1.20% 1.20%
Phosphorus, max 0.04% 0.04%
Sulfur, max 0.15% 0.05%

A307 Recommended Hardware

Nuts Washers
A307 Grades A & C* A307 Grade B
1/4 - 1-1/2 1-5/8 - 4 1/4 - 4
A563A Hex A563A Heavy Hex A563A Heavy Hex F844

Testing Lab

Workshop

Warehouse

We stick to our enterprise spirit of "Quality, Performance, Innovation and Integrity". We purpose to create a lot more price for our prospects with our rich resources, innovative machinery, experienced workers and great products and services for China OEM China 10.9 Grade M2-M20 Flat Head Hex Socket Cap Screw, Our ultimate goal is always to rank as a top brand and also to lead as a pioneer in our field. We are sure our productive experience in tool creation will get customer's trust, Wish to co-operate and co-create an even better long term with you! China OEM China Alloy Steel Hex Socket Flat Head Screw, Metric Socket Head Cap Screws, We aspire to meet the demands of our customers globally. Our range of products and services is continuously expanding to meet customers' requirements. We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!
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