We specialize in manufacturing carbon steel grade 8.8 threaded screws, recognized by the characteristic color of carbon steel. These screws adhere to the American standard B7 material and are primarily designed as connecting parts placed beneath finger racks. Widely utilized in construction and decoration, they offer versatile applications across various projects.
To ensure optimal functionality, the length of the threaded section is adjusted to expose the nut by a spacing of 1-2 units after tightening. We also offer stainless steel variations in materials 304 and 316, catering to specific requirements.
With our extensive experience in fastener production, our company boasts a professional testing department holding relevant certifications. We adhere to strict production management practices, ensuring unparalleled quality assurance for our products.
We specialize in customization, tailoring non-standard parts to meet unique customer requirements. Additionally, we offer customized solutions aligned with customer specifications, providing drawings that precisely match their needs.
Customers can rely on secure transactions and trust us for establishing long-term, reliable partnerships built on a foundation of trust and satisfaction.
Tech.Standards | Material | Grade | Size | Finish | |||
Thread rod | DIN/ASTM | 1008 |
GB Standard 4.8 Grade ASTM Standard Grade2 |
M2-M120 1/2-5" |
ZINC,HDG,Black | ||
Hs3404 | ASTM193/A193M |
GB Standard
25CrMoVA 0Cr17Ni12Mo2 etc ASTM
standard tainless steel |
GB standard
12.9 A2-70,A4-70 B8M,B16 L7, L7M, BC,BD,660A, 660B,651A,651B |
GBstandard M12-M120 ASTM Standard 1/2-5" |
Black,zinc plated
HDG,Cadmium
Passivation PFA ETFE) |
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HG/T20634 | ASTM320/A320M | ||||||
HG/T20613 | ASTMA354 | ||||||
JB/T4707 | ASTMA453 | ||||||
SH3404 | ASTMA194/194M |
GB Standard 25CrMoVA, 0CR18Ni9,45#,
0Cr17Ni12Mo2 stainless steel |
GB Standard A2-70,A4-80 ASTM Standard 660A 660B 651A, 651B 2H,2HM,4, 6.7,8,16O,A,B,C, D,DH |
GB or DIN
standard |
Black,zinc plated
HDG,Cadmium
Passivation PFA ETFE) |
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HG/T20613 | ASTMA563/563M | ||||||
HG/T20634 |
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HG/T21573.3 |
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