1/4-20 UNC Stainless Steel Flange Nut
A wide-base flange nut in 316 stainless steel with 1/4-20 UNC threading, ideal for automotive and plumbing fixtures requiring extra bearing surface. Classified under HTS 7318.16.00.60 for stainless steel threaded nuts.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If explicitly locknuts with nylon insert
Self-locking nuts with prevailing torque features may have distinct statistical suffixes.
If non-stainless carbon steel version
Material composition determines stainless vs iron/steel steel headings.
If for retail sale in consumer kits
Hardware sets for retail may classify under machinery parts if not purely fasteners.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Label flange nuts separately from bolts in shipments to avoid set classification pitfalls
• Include ANSI B18.2.2 certification for UNC threading to support tariff verification
• Watch for anti-dumping duties on certain stainless origins like China or Taiwan
Related Products under HTS 7318.16.00.60
M8 Stainless Steel Hex Nut
A hexagonal nut made from AISI 304 stainless steel, threaded for M8 bolts, used in marine and outdoor applications for corrosion resistance. It falls under HTS 7318.16.00.60 as a threaded nut of stainless steel, distinct from iron or alloy steel nuts.
M10 Stainless Steel Nylon Insert Lock Nut
Metric M10 lock nut featuring a nylon ring insert in A4-70 (316) stainless steel for vibration resistance in industrial equipment. HTS 7318.16.00.60 covers other stainless steel threaded nuts including prevailing torque types.
5/16-18 Stainless Steel Acorn Nut
Decorative dome-shaped acorn nut in 304 stainless steel, 5/16-18 threading for exposed architectural fasteners. Falls under HTS 7318.16.00.60 as other stainless threaded nuts.
M6 Stainless Steel Coupling Nut
Extended length coupling nut in 316 stainless steel with internal M6 threading on both ends for rod-to-rod connections. Classified as other stainless steel nuts under HTS 7318.16.00.60.
3/8-16 Stainless Steel Wing Nut
Thumb-turn wing nut in AISI 304 stainless with 3/8-16 threading for tool-free adjustment in lab equipment. HTS 7318.16.00.60 includes ergonomic stainless threaded nuts.
M12 Stainless Steel T-Nut
T-slotted nut for aluminum extrusion systems, 316 stainless steel M12 threading for industrial framing. Other stainless nuts under HTS 7318.16.00.60.