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M3 SS304 Stud Bolt
QS Fastener: M3 SS304 Stud Bolt
Name: M3 SS304 Stud Bolt
Standard: DIN976
Material: SS304
Size: M3
Lenght: 1000 mm
Surface: Natural color
Standard: DIN976
Material: SS304
Size: M3
Lenght: 1000 mm
Surface: Natural color
Quantity
M3 SS304 Stud Bolt, strictly manufactured to DIN976, is made from SS316 stainless steel. The 1000 mm extra-long length is formed in one piece, the surface is left in its natural metallic finish, and the product offers high corrosion resistance and high strength. It is ideal for long-distance fastening in chemical plants, marine applications and high-cleanliness equipment. Installation is quick and easy, performance is stable and reliable, helping you cut costs and boost efficiency.
12 most frequently asked questions and answers when customers purchase M3 SS304 Stud Bolt
1. Material 304 or 316?
Answer: Choose 316L for marine or chemical environments; 304 is sufficient for indoor, dry conditions and immediately lowers cost by 15 %.
Answer: Choose 316L for marine or chemical environments; 304 is sufficient for indoor, dry conditions and immediately lowers cost by 15 %.
2. Will the standard system be incompatible?
Answer: These bolts are DIN976 with 6 g thread and mate 100 % with DIN/ISO nuts. If your site uses ANSI/GB, please let us know in advance and we can supply matching nuts in the same batch.
Answer: These bolts are DIN976 with 6 g thread and mate 100 % with DIN/ISO nuts. If your site uses ANSI/GB, please let us know in advance and we can supply matching nuts in the same batch.
3. How do I read the strength class?
Answer: A4-70 means tensile ≥700 MPa and yield ≥450 MPa; it is not an HRC hardness. Torque can be estimated with T = 0.2 × σ × d³; a torque table is attached.
Answer: A4-70 means tensile ≥700 MPa and yield ≥450 MPa; it is not an HRC hardness. Torque can be estimated with T = 0.2 × σ × d³; a torque table is attached.
4. How should I choose the surface finish?
Answer: Default is “natural colour + passivation”, passing 1000 h salt-spray without rust. Mirror, Teflon or black-plated finishes are available on request; lead time increases by 3 days.
Answer: Default is “natural colour + passivation”, passing 1000 h salt-spray without rust. Mirror, Teflon or black-plated finishes are available on request; lead time increases by 3 days.
5. How many salt-spray hours can it actually pass?
Answer: The 316 base material passes 1000 h in ISO 9227 NSS without red rust. If higher protection is required, choose passivation + sealing for 1200 h pass.
Answer: The 316 base material passes 1000 h in ISO 9227 NSS without red rust. If higher protection is required, choose passivation + sealing for 1200 h pass.
6. If it is magnetic, is it not 304/316?
Answer: Slight magnetism after cold working is normal; the key figure is PREN ≥16 (316 measures 23.1). A material report is supplied.
Answer: Slight magnetism after cold working is normal; the key figure is PREN ≥16 (316 measures 23.1). A material report is supplied.
7. Will the small thread strip?
Answer: M3 is rolled; 6H GO/NO-GO gauge acceptance is 100 %. We recommend applying a small amount of anti-seize paste before assembly.
Answer: M3 is rolled; 6H GO/NO-GO gauge acceptance is 100 %. We recommend applying a small amount of anti-seize paste before assembly.
8. How is length measured?
Answer: This specification is “full thread, length L = 1000 mm (excluding hex end)”. If half-thread or length including head is required, please specify.
Answer: This specification is “full thread, length L = 1000 mm (excluding hex end)”. If half-thread or length including head is required, please specify.
9. Are washer and nut the same material?
Answer: Standard supply is A4 washer + A4 hex thin nut with PREN identical to the bolt, eliminating galvanic corrosion.
Answer: Standard supply is A4 washer + A4 hex thin nut with PREN identical to the bolt, eliminating galvanic corrosion.
10. M3 SS304 Stud Bolt packaging and traceability?
Answer: 10 pieces per heat-shrink pack with QR code batch label. EN 10204 3.1 material report, salt-spray test report and factory certificate are provided.
Answer: 10 pieces per heat-shrink pack with QR code batch label. EN 10204 3.1 material report, salt-spray test report and factory certificate are provided.
11. M3 SS304 Stud Bolt minimum order quantity & lead time?
Answer: Normal MOQ is 100 pieces; if stock is available and payment is received before 4:00 p.m., same-day dispatch is possible; quantities below 100 can be discussed for shared shipment.
Answer: Normal MOQ is 100 pieces; if stock is available and payment is received before 4:00 p.m., same-day dispatch is possible; quantities below 100 can be discussed for shared shipment.
12. Price and duties?
Answer: Price floats with the previous week’s nickel average on the London Metal Exchange (LME); quotations are valid for 3 days. For export we can handle Certificate of Origin, FORM A and anti-dumping duty exemption statement.
Answer: Price floats with the previous week’s nickel average on the London Metal Exchange (LME); quotations are valid for 3 days. For export we can handle Certificate of Origin, FORM A and anti-dumping duty exemption statement.
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