309S Bolts
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We produce 309S bolts,309 S bolts,309S bolting,309S Hex Head Bolts,309S studbolt,309S Heavy Hex head bolts,309S Stud Bolts,309S Anchor Bolt,309S Eye Bolt,309S U Bolts,309S Structural Bolts,309S Step Bolt,309S Flange Bolt,309 S Screw Thread Eye Bolt,309 S Head Plow Bolts,309 S Square Head Bolts,309 S Hexagonal Bolts,309 S J-Bolts,309S Bent Eye Bolts,309S Elevator Bolts,309S Step Bolts,309S Tap Bolts,309S Tension Control Bolts,309S Shoulder Bolt,309 S bent bolts,309S headed bolts,309 S Heavy Hex head bolts,309S Timber Bolts,309S Lag Bolts,309S Timber Bolts,309S Hanger Bolt,309S Button Head Bolts,309 S Tie Bolt,309S Hexagon Bolt,309S Hexagon Cap Screw Bolt from china

The type of 309S anchor bolts that we could do is 309S straight anchor bolts, bent anchor bolts and headed anchor bolts

The type of 309S bent bolts that we could do is 309 S bent anchor bolts, u-bolts, square bent u-bolts, j-bolts, bent tie bolts, bent check bolts, bent hook rail bolts, bent I-bolts, and custom special bent bolts.

The type of 309S headed bolts that we could do is 309S Cap Screws head bolts,Hex head bolts,Heavy Hex head bolts,Lag Bolts,Square Head bolts,Step Bolts,Dome Head bolts,Carriage boltds,Socket Head Bolts

We could produce 309S non-standard and speciality large bolts from 1/4” all the way to 4” and in metric sizes from M8 to M100.

The surface finish of 309S bolts that we could do is as follows:Hot Dip Galvanized,Mechanical Galvanized,Zinc plated (Clear),Yellow Zinc plated,Cadmium plated,Yellow Cadmium plated,Blue Xylan or Blue Teflon,Green Xylan or Green Teflon.Black Oxide,Plain surface,Ni-plated, Passivated, Tin-plated, Sandblast and Anodize, Polish, Eletro Painting, Chrome plated etc.

In order to control the quality of 309S bolts, the material of 309S bars is melted by ESR+VIR or VIM+ESR+VAR and is produced as the standard of ASTM B462 and ASTM B473

309S is Basically a controlled carbon version of type 309 stainless designed to improve the weld strength of the alloy while benefiting from the alloy's high resistance to heat and corrosion.

The chemical composition of 309 S bolts is as follows


0.08 max


22 - 24




2 max


12 - 15


0.045 max


1 max


0.03 max

The mechanical property of 309S bolts is as follows



Tensile  strength, ultimate

89900 psi

Tensile  strength, yield (0.2%)

45000 psi

Elongation  at break (in 50 mm)


Hardness,  Brinell (converted from Rockwell B hardness)


Hardness,  Knoop (converted from Rockwell B hardness)


Hardness,  Rockwell B


Hardness,  Vickers (converted from Rockwell B hardness)


As per heat treatment of 309S bolts, we could do, solution and ageing treatment, Tempering, Hardening, Spheroidizing, Stress Relieving as per the requirement of the clients

309S bolts has been widely used in Boilers,Bridges,Construction Machinery,Engineered Plumbing,Engines,Hydraulics,Impellers,Jewelry,Machine Tools,Water Treatment Plants and so on

In order to control the quality of 309S bolts, We could do Hardness Testing,Proof load testing,Corrosion testing,Impact testing,Tensile strength tests,Finished product tests,Chemical analysis tests,CHARPY tests as per the requirement of the clients

Our 309S bolts has been 100% ultrasonic test according to EN102768-3, SA388, Sep 1921  etc

We could supply 309S bolt material certificate as per the standard of EN10204-3.1 or EN10204-3.2 of third party(like GL,DNV,TUV,BV and so on)

Please sned us the size or drawing of 309S bolts, we are glad to quote the best price for your side.

Except 309S bolts,we also could produce 309S flanges,309S plates,309S fasteners,309S bars,309S pipe fittings,309S pipes,309S tubes,309S springs