1/2-20 18-8 Stainless Finished Hex Nuts – Fine Thread – Qty 25

SKU: 3114
Product Type: Finished hex nut (standard pattern)
Thread Size: 1/2-20 UNF (fine), 20 TPI, right-hand
Thread Class: 2B (internal)
Material: 18-8 (304) stainless steel
Finish: Plain stainless, typically passivated (no coating)
Drive/Shape: Hex, wrench/socket compatible
Across Flats (AF): 3/4 in (standard for 1/2-20 finished hex nuts)
Nut Height: Standard finished hex height per ASME B18.2.2
Corrosion Resistance: Excellent for outdoor, marine, and industrial use
Magnetism: Non-magnetic to slightly magnetic (typical for 18-8)
Standards/References: ASME B1.1, ASME B18.2.2, ASTM F594 (304)
Recommended Mating Hardware: 1/2-20 stainless bolts/studs & flat washers
Usage Notes: Use anti-seize on stainless-to-stainless to reduce galling
Package Quantity: 25 nuts
 
SKU: 3114
Trust 1/2-20 18-8 Stainless Finished Hex Nuts (Qty 25) for heavy-duty, fine-thread fastening where strength, precision, and corrosion resistance matter. The UNF 20 TPI thread provides higher clamping force and superior vibration resistance vs. coarse threads—ideal for automotive, marine, machinery, and fabrication.
Manufactured from 18-8 (304) stainless steel, these finished hex nuts deliver excellent rust resistance in outdoor and salt-spray environments. Standard hex flats ensure easy wrench access and consistent torque. Pair with matching 1/2-20 stainless bolts/studs (and washers) for a durable, professional-grade joint.
Pro tip: For stainless-on-stainless assemblies, apply a touch of anti-seize to minimize galling during high-torque installs.
Terms of Service: 60-day money-back with free return shipping.
Motto: We won’t screw you—but our fasteners will.