309S Fasteners
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We produce 309S fasteners,309 S fasteners,309S studs,309S Nuts,309S Screws,309S bolts,309S Washers,309S Sockets,309S pins,309S turnbuckles,309S socket screws,309S HEAVY HEX NUT,309 S HEX NUT,309 S Rivets,309S coupling nuts and 309S pins in china

The type of 309S nuts that we could do is as follows:309S Hex Nuts,309S Heavy Hex Nut,309 S Cap Nut,Acorn Nut,Serrated Flange Nut,Coupling Nut,Square Nut,Castle Nut,Wing Nut,Flange Lock Nut,Flex Lock NutnK Lock Nut,Jam Nut,Slotted Nut,Way Lock Nut,Custom Nut,T Nuts

The type of 309S bolts that we could do is as follows:309 S Hex Head Bolt,Carriage Bolt,Anchor Bolt,Eye Bolt,Flange Bolt,Elevator Bolt,Lag Bolt,Draw Bolt,Plow Bolt,Stove Bolt,Tap Bolt,Hanger Bolt,U Bolt,Grub Screw,Shoulder Bolt,Step Bolt,J Bolt

The type of 309S screws that we could do is as follows:309S Socket Head Cap Screws,Flat Socket Cap Screws,Button Head Socket Screw, Low Head Cap Screws, Countersunk Socket Screws,Socket Cap screws,Socket Set screws and so on

The type of 309S studs that we could do is as follows: 309S Thread Studs,Collar Studs,Combo Studs,Double End Studs,Pad Studs,engineer studs,Tap End Studs

The type of 309S washers that we could do is as follows:309S Flat Washer,Spring Washers,Dome Washer,Hexagonal Washer,Square Washer,Countersunk WasherTooth Lock Washer,Dock Washer,Fender Washer,Ogee Washer,Hex Washers,Split / Lock Washer,Customized Washer,Tab Washers

As per surface finish of 309S fasteners. we could do Cadmium Plating,Cadmium Yellow,Chrysler Specs,Zinc and Black Dichromate,Zinc and Yellow Dichromate,Zinc Plating as per the requirement of the clients

309S is an austenitic heat resistant alloy with useful oxidation resistance to 2000 degrees F under constant temperature conditions.

The chemical composition of 309 S fasteners 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 fasteners is as follows



Tensile  strength, ultimate

620 MPa

Tensile  strength, yield (0.2%)

310 MPa

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 fasteners, we could do, solution and ageing treatment, Tempering, Hardening, Spheroidizing, Stress Relieving as per the requirement of the clients

In order to control the quality of 309S fasteners, we have following inspection equipment:size inspection equipment,Digital Vernier Callipers,Digital Micrometers,Slip Gauge Sets,Adjustable Dial Snap Gauges,Thread Ring Gauges,Thread Plug Gauges,Wear Check Plugs for Thread Gauges,Distance Gauges,Adjustable Dial Snap Gauges,Height Gauges,System 21 Ring Gauge,Rotational Capacity

As per the packing of 309S fasteners, In addition to the standard cartons, we also provides small box packing, color-printed carton, polybag packing, custom label with barcode etc.

In order to control the quality of 309S fasteners materail, we could do following test as per the requirement of the clients:tensile tests,impact test,hardness test (Brinell, Vickers, Rockwell),magnetic partlice examination,penetrants test (surface for fissures),ultrasonic examination,

Our 309S fasteners are widely used in Ball Valves,Check Valves,Air filter,Oil filter,Heat Exchangers, Pressure Vessels,Rotary screw compressors,Cyclone Separators, Water tube boilers,In-line pumps,Magnetic pumps,Batch Steam Sterilizer,Naval Construction and so on

Also we could supply 309S fasteners quality inspection certificate by third party,like TUV, GL, LR, ABS, DNV, RINA, BV and so on

Please send us the size or drawing of 309S fasteners that you need, we are glad to quote the best price

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