HILLMAN 221016 Hex Tap 008236174847 BOLT5/16X2.5

( Brand: Hillman ), ( Manufacturer Part Number: 221016 ), ( Part Type: Tap ), ( UPC: 008236174847 )

Review HILLMAN Hex Tap Bolt5/16x2.5 100

The Hillman 221016 Hex Tap Bolt is a versatile and essential fastener for various applications. Measuring 5/16 inches in diameter and 2.5 inches in length, this hex tap bolt boasts a hexagonal head shape with six flat sides, providing a secure and efficient grip when using socket wrenches or hex drivers. This bolt is designed for threaded applications, with a UNC (Unified National Coarse) thread pitch of 13 per inch.

Made from high-quality, carbon steel, this bolt is built to withstand the rigors of industrial and mechanical use. Its surface is finished with a zinc coating, which offers reliable protection against rust and corrosion. This coating not only enhances the bolt's durability but also ensures a cleaner and more professional appearance.

The hex tap bolt features a tapered shank, which allows for easier starting and threading into material, even in hard-to-reach areas. Its tapered design also provides improved torque transfer from the tool to the fastener, ensuring a secure and strong connection.

This bolt is an excellent choice for a wide range of applications, including assembly, repair, and maintenance work in industries such as automotive, construction, and manufacturing. Its standard size and thread pitch make it compatible with various tools and applications, making it a valuable addition to any toolbox or workshop inventory.

In summary, the Hillman 221016 Hex Tap Bolt is a robust and reliable fastener, engineered for strength and durability. Its hexagonal head design, UNC thread pitch, and tapered shank make it a versatile and efficient solution for a multitude of applications. With its zinc coating for corrosion resistance, this bolt is a smart investment for professionals and DIY enthusiasts alike.

Pros and Cons of Buying a Hillman 221016 Hex Tap Bolt (5/16x2.5)

a. Hillman is a reputable brand known for manufacturing high-quality fasteners and tools.

b. This bolt is a hex tap version, which is useful when working in tight spaces where a standard socket may not fit.

c. The 5/16 inch hexagon head provides a large contact area with the socket or wrench, ensuring better grip and torque transfer.

d. The 2.5-inch length is suitable for various applications, especially for assembling or disassembling components where a medium-length bolt is required.

e. The chamfered, self-tapping design of the bolt allows it to bite into the material and create its own thread when used with a tap and die set, eliminating the need for pre-drilled or tapped holes.

a. Due to the self-tapping nature of the bolt, it may not be suitable for materials that are too hard, brittle, or have inconsistent grain structures, as it may not be able to bite in effectively.

b. The chamfered edge of the bolt can potentially damage softer materials, such as plastic or aluminum, during the tapping process.

c. Self-tapping bolts generally require more torque to be applied during the installation process compared to pre-tapped bolts.

d. Using the wrong size tap or die set may damage the chamfered edge or the thread, resulting in an improperly threaded bolt.

The Hillman 221016 hex tap bolt (5/16x2.5) is a versatile and useful fastener for various applications where a medium-length, self-tapping hex bolt is required. Its reputable brand, chamfered design, and hexagonal head provide several advantages, such as better grip, torque transfer, and suitability for tight spaces. However, the potential cons, such as the requirement for harder materials, the risk of damaging softer materials during the tapping process, and the need for precise tap and die sizes, should be carefully considered before making a purchase.

If you need a medium-length, self-tapping hex bolt for a project and are confident in your ability to use the tap and die set correctly, the Hillman 221016 hex tap bolt (5/16x2.5) is a solid choice. However, if you're unsure about the material requirements, or if you'd prefer a more straightforward installation process, you may consider alternative fastening methods, such as pre-tapped bolts or other types of fasteners. Always ensure that you have the appropriate tools and knowledge before working with self-tapping bolts to minimize the risk of damage and ensure a successful installation.

Details:

D X 2-1/2 in. L Zinc Plated Steel Hex Tap Bolt 100 pk HEX TAP BOLT5/16X2.5 HILLMAN 5/16 in.

part #: 221016 prices

• $36.07-$54.78

specifications toolssupp:

• brand: Hillman
• mpn: 221016
• part type: Tap
• upc: 008236174847

returns toolssupp:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

shipping toolssupp:

• type: Fixed
• carrier: UPS
• transit: 3-7 Days
• service: UPS Ground
• class: Standard
• cost: $0.00

general toolssupp:

• condition: New
• Motors > Automotive Tools Supplies > Other Auto Tools Supplies

offer toolssupp:

• availability: In Stock
• options: Ship-to-home
• started: November 26, 2025
• quantity: 1
• sold: 0

payments toolssupp:

• wallet: Paypal
• other
• credit card: Visa

seller toolssupp:

• # reviews: 5593
• city: Morton Grove, Illinois
• rating: 95.8%