Custom A2-70 Stainless Steel 304 Square Flat Head Bolt Enquiries for Sheet Metal | Countersunk Fasteners
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Model NumberYS001Header styleHexagon, T head, eye, flange, round
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surface treatmentpassivationthreadMetric system of inches
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Class4.8, 5.6, 6.8, 8.8, 10.9, SS304 SS316Available materialsCarbon steel, high-strength steel, stainless steel
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shipping packaging20-25 kg cardboard boxes + 900 kg per palletHS codeChinese wholesale
Specify the head required for the sheet-metal joint. The examples show countersunk screws with star-shaped drive recesses and hex nuts, not a verified square-flat-head bolt.
Define the recess and countersunk contact
Provide actual drive geometry, countersink angle, bearing arrangement, shank length and thread dimensions. The photograph does not establish an exact drive standard or installation fit.
- Select square or countersunk head on the drawing.
- Specify drive recess and bearing geometry.
- Define metric or inch pitch and engagement.
- State actual material and applicable property class.
- Agree finish, nut scope and joint inspection.
Specify SS304 separately from A2-70
Material grade and fastener class need their own applicable requirements. SS316 and carbon or high-strength-steel references are alternatives, not equivalent ratings of the pictured screws.
Verify the actual sheet-metal assembly
Choose compatible passivation and supply sheet thickness, tightening and service loads. Chemistry, strength and corrosion acceptance require relevant records rather than appearance alone.
The A2-70 Custom Stainless Steel 304 Square Flat Head Bolt is designed for sheet metal fabrication and industrial applications requiring high durability and corrosion resistance. Manufactured from premium SS304 material, this bolt offers excellent strength and reliability for long-term use in demanding environments.
Available in various header styles including hexagon, T head, eye, flange, and round, these bolts meet diverse engineering needs and are suitable for multiple installation requirements. The surface undergoes professional passivation treatment to enhance anti-rust performance and improve overall longevity.
Our bolts are available with metric or inch threading and come in classes such as 4.8, 5.6, 6.8, 8.8, 10.9, SS304, and SS316. We also supply different materials including carbon steel and high-strength steel. Packing options include 20-25 kg cardboard boxes and palletized shipments for efficient bulk delivery.
Ideal for factories, OEMs, and wholesale distributors, our A2-70 square flat head bolts ensure dependable assembly and structural security in machinery, automotive, and construction projects.
