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304 Stainless Steel 4-40 Hex Nut, 5/16" Width, Plain Finish, Pkg Qty 1000

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Industrial · SKU: AE9119732

304 Stainless Steel 4-40 Hex Nut, 5/16" Width, Plain Finish, Pkg Qty 1000

This 304 stainless steel hex nut is designed for durable, corrosion-resistant fastening in demanding environments. It features a 4-40 thread size, a 5/16-inch width across flats, and a plain finish.

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$49.99
$0.05/each(1000 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$49.99
11 - 50-5%$47.49
51+-10%$44.99
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Quick Answer

How Buyers Should Evaluate 304 Stainless Steel 4-40 Hex Nut, 5/16" Width, Plain Finish, Pkg Qty 1000

This 304 stainless steel hex nut is designed for durable, corrosion-resistant fastening in demanding environments. It features a 4-40 thread size, a 5/16-inch width across flats, and a plain finish. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • System of Measurement: Imperial
  • Material Grade/Class: A2-70
  • Material: Stainless Steel 304

Purchase Details

  • Online price starts at $49.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 1000 / Each.
  • Lead time: 2-3 weeks.

Use RFQ When

  • Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
  • Request support when fit, material, or substitute selection needs confirmation before order.
  • Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.

Technical Specifications

System of MeasurementImperial
Material Grade/ClassA2-70
MaterialStainless Steel 304
Thread Size4-40
FinishPlain
Width Across Flats0.3125 in
Product Details

Full Description

Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.

Overview

This 304 stainless steel hex nut is engineered for reliable, long-term fastening in demanding industrial and commercial environments. Manufactured in full compliance with ASME/ANSI B18.2.2 dimensional standards, it ensures consistent fit and performance with corresponding fasteners. The corrosion-resistant 304 stainless steel material and A2-70 strength grade make this nut suitable for assemblies exposed to moisture, chemicals, and varying temperatures, providing a robust solution for critical connections.

Key Features

Constructed from corrosion-resistant 304 stainless steel Meets A2-70 material strength and hardness grade Manufactured to ASME/ANSI B18.2.2 dimensional specifications Plain, uncoated finish for maximum material compatibility Imperial 4-40 thread size for standard fastener compatibility 5/16-inch width across flats for use with common hand or power tools

Specifications

System of Measurement: Imperial

Material

Stainless Steel 304 Material Grade/Class: A2-70 Thread Size: 4-40 Finish: Plain Width Across Flats: 0.3125 inches (5/16") Standards: ASME/ANSI B18.2.2 Pack Quantity: 1000

Applications

General industrial assembly and machinery maintenance Electrical panel and enclosure construction Food processing and beverage equipment where corrosion resistance is critical Marine and outdoor fixture installations Prototype development and manufacturing jigs Appliance repair and assembly

Frequently Asked Questions

What are the exact dimensions and material specifications for this hex nut?
This nut conforms to ASME/ANSI B18.2.2 standards. It is made from 304 Stainless Steel (Grade A2-70) with a plain finish, has a 4-40 thread size, and measures 5/16" (0.3125 inches) across the flats.
What are the typical applications or use cases for this specific nut?
Its 304 stainless steel construction offers good corrosion resistance, making it suitable for assemblies in moist or mildly corrosive environments, such as outdoor equipment, food processing machinery, or marine applications. The 4-40 thread is commonly used in electronics, small instruments, and precision assemblies.
How is this product packaged for order, and what is the minimum quantity?
This item is sold in bulk packaging with a minimum order quantity of 1000 pieces per bag. This pack size is designed for production or maintenance operations requiring a significant volume of consistent, high-quality fasteners.
304 Stainless Steel 4-40 Hex Nut, 5/16" Width, Plain Finish, Pkg Qty 1000 | Machrio