Stainless Steel Hex Bolt 316
A4-70 (AISI 316) full-thread hex head bolt to DIN 933 / ISO 4017 for metric fastening. Sold per piece in M×L sizes.
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Available Sizes & Finishes
186 sizes available
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Thickness (mm)
Applications & Selection Guide
A4-70 (AISI 316) hex head bolts, fully threaded, to DIN 933 / ISO 4017. The 316 alloy's molybdenum content protects against pitting in chloride and acid environments that attack standard A2 fasteners.
Choose A4 bolts for marine hardware, coastal balustrades and facades, swimming pools, wastewater plants, and chemical equipment. Always pair with A4 nuts and washers, and lubricate threads to prevent galling. Available M×L sizes are in the table above.
Sold per piece with a 50–100 piece minimum order depending on size. Include sizes, quantities, and destination in your quote request.
Technical guides
304 vs 316 stainless steel: composition, strength, corrosion resistance and when to use each
How 304 (1.4301) and 316 (1.4401/1.4404) stainless steel differ in composition, PREN, strength and chloride resistance, what the L grades and A2/A4 fasteners mean, and which grade to choose.
Read the guide →Bolt grades and sizes: 8.8, 10.9, 12.9, A2 and A4, and metric hex bolt dimensions
What the property classes 4.8, 8.8, 10.9 and 12.9 and stainless A2-70 and A4-70 mean, minimum strength and tensile loads, metric thread pitch and hex head sizes, DIN 933 vs DIN 931, and which nut goes with which bolt.
Read the guide →Product Information
Material Grade
A4-70 / AISI 316
Manufacturing Standard
DIN 933 / ISO 4017
Material Type
Stainless Steel
Category
Hex Bolt 316
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