GB 5789 Stainless Steel Serrated Hex Flange Bolts

GB 5789 (GB5789) stainless steel hex flange bolts with an enlarged hex head and a serrated bearing face.

Material: 304 stainless steel. The listed catalogue items carry an A2-70 TonG marking. Compare thread sizes and lengths below.

Stocked items: dispatch in around 3 days. Availability and timing are confirmed with your quotation.

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Send your size and quantity. Drawings and files can be attached to your enquiry.

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Find Your GB 5789 Specification

Open a material group to compare thread sizes, markings and length options. Choose a length from the same row as your required material and thread.

All dimensions are in millimetres. Thread is shown as diameter × pitch. On mobile, swipe a table sideways to see all columns.

304 Stainless Steel · 44 catalogue items
Thread
diameter × pitch
Head marking Thread / version Length options (mm)
M5 × 0.8 A2-70 TonG Enlarged hex flange; serrated bearing face 10
M5 × 0.8 A2-70 TonG Full thread
Enlarged hex flange; serrated bearing face
12 · 14 · 16 · 20 · 25 · 30 · 35 · 40
M6 × 1 A2-70 TonG Full thread
Enlarged hex flange; serrated bearing face
10 · 12 · 16 · 20 · 25 · 30 · 35 · 40
M8 × 1.25 A2-70 TonG Full thread
Enlarged hex flange; serrated bearing face
16 · 20 · 25 · 30 · 35 · 40 · 45 · 50 · 55 · 60
M10 × 1.5 A2-70 TonG Full thread
Enlarged hex flange; serrated bearing face
20 · 25 · 30 · 35 · 40 · 45 · 50 · 60
M12 × 1.75 A2-70 TonG Full thread
Enlarged hex flange; serrated bearing face
20 · 25 · 30 · 35 · 40 · 45 · 50 · 55 · 60

Fast Dispatch for Stocked Items

Items available in Tongming stock can usually be dispatched in around 3 days. Stock and dispatch timing are confirmed with your quotation.

Send Your Specification

Include GB 5789, material, diameter × pitch × length, head marking, version and quantity. Attach a drawing when dimensions or inspection requirements need clarification.

Request a Quote

Fastener supply experience since 2005. Nanjing Tongming provides experienced product coordination and competitive quotations for project and repeat purchasing.

Product photos illustrate the series. Markings, dimensions, thread coverage and finish depend on the quoted item. Catalogue listing does not indicate live stock.

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