Stainless Steel Nylon-Insert Lock Nut 316 (A4)
A4-70 (AISI 316) nylon-insert lock nut to DIN 985 / ISO 10511 for prevailing-torque joints in corrosive environments. Sold per piece.
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Available Sizes & Finishes
19 sizes available
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Applications & Selection Guide
A4-70 (AISI 316) nylon-insert prevailing-torque lock nuts to DIN 985 / ISO 10511 for corrosive environments.
Use A4 lock nuts with matching A4 bolts or rod in coastal, marine, poolside, wastewater, and chemical-service assemblies. Confirm insert temperature limits and use suitable anti-seize to reduce stainless thread galling.
Choose the metric size above and request a quote with quantity and destination.
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 →Nut and washer types compared: hex, lock, flange, castle, coupling, cap and HV nuts, flat, spring and structural washers, with their standards
How hex, thin, nylon-insert and all-metal lock, flange, castle, coupling, cap, wing and HV nuts differ, which nut class goes with which bolt, and when to use DIN 125, DIN 127, DIN 7989 and DIN 6916 washers.
Read the guide →Product Information
Material Grade
A4-70 / AISI 316
Manufacturing Standard
DIN 985 / ISO 10511
Material Type
Stainless Steel
Category
Nylon-Insert Lock Nut 316
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