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2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
Specifications
Brand Name :
JIASHAN
Certification :
ISO 9001
Place of Origin :
china
MOQ :
10pcs
Price :
$0.01~2.56,Piece/Pieces
Payment Terms :
L/C,D/A,D/P,T/T
Supply Ability :
10000,Piece/Pieces,Month
Delivery Time :
about 12-18days
Packaging Details :
Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film.
Product name :
SEMS SCREW
Service :
OEM
Corrosion Resistance :
Yes
Port :
Shenzhen, Guangzhou
Corrosionresistance :
High
Thread Type :
Standard/Customization
Package :
Plastic Bag+Chipboard Carton+Plywood Pallet Pallet with Belt&Plastic Film.
Finish :
customized
Description
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer

2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer

Product Description

These miniature tapping screws (diameters 2.2mm, 2.9mm, 3.5mm) are designed for extreme high‑temperature service. The material conforms to ASTM A193 (B8, B8M, B8T) or ASTM A453 Grade 660 (A286 superalloy). These alloys retain significant strength up to 650‑700°C while resisting oxidation and creep. The screw has a cross recessed pan head and a plain flat washer (same material) pre‑assembled. The tapping thread cuts its own mating thread into metal sheet or cast holes, eliminating pre‑tapping. Typical applications include exhaust systems, furnace components and turbine accessories.

Applications
Industry Usage
Automotive High-strength applications in engines, heavy-duty machinery, and bridge construction
Mechanical Connecting mechanical parts, circuit boards, engines, transmissions in various industries
Energy Connecting power generation equipment and transmission lines
Architectural Building structures, shipbuilding, and petrochemical equipment
  • Automotive exhaust manifolds and catalytic converter shells – temperatures up to 800°C (A286).
  • Industrial kilns and burners – fixing refractory liners, thermocouple sleeves.
  • Gas turbines and turbocharger housings – high‑temperature bolting.
  • Petrochemical cracking furnace attachments – B8T resists intergranular corrosion.
  • High‑temperature sensor housings – miniature sizes for tight spaces.
Key Features
  • Ultra‑high temperature capability – A286 retains >600 MPa at 650°C.
  • Self‑tapping design – no need to pre‑tap holes in high‑alloy castings.
  • Miniature precision – 2.2mm diameter fits compact high‑temp electronics.
  • Heat‑resistant washer integrated – prevents preload loss.
  • Multiple alloy options – B8M for chloride‑rich high‑temp environments, B8T for sensitisation resistance.
Company Information
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer 2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer 2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer 2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: We are factory and OEM are available.
Q: How long is your delivery time?
A: Generally 7-10 days if in stock, or 15-20 days if not in stock (depending on quantity).
Q: Do you provide samples? Is it free or extra?
A: Yes, we offer free samples but customers pay the freight cost.
Q: What are your payment terms?
A: 30% T/T in advance, balance before shipment or L/C.
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2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer

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Product Detail
Brand Name :
JIASHAN
Certification :
ISO 9001
Place of Origin :
china
MOQ :
10pcs
Price :
$0.01~2.56,Piece/Pieces
Payment Terms :
L/C,D/A,D/P,T/T
Contact Supplier
video
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer
2.2 2.9 3.5 B8 B8m B8t Astm A453 Gr660 A286 Cross Recessed Pan Head Tapping Screws And Plain Washer

Hunan Jia Shan Hardware Tech Co., Ltd.

Verified Supplier
1 Years
hunan
Since 2007
Business Type :
Manufacturer, Exporter, Seller
Main Products :
CNC Machining Parts, Metal Bolt, Metal Screw
Total Annual :
15000000-20000000
Employee Number :
100~200
Certification Level :
Verified Supplier
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