3/8"-16 Break-Away Shear Nuts – 304 Stainless Steel Tamper-Resistant Security Fasteners

from $10.99

304 Stainless Steel Security Fastener for Outdoor, Utility & Commercial Applications

Protect equipment, signs, fixtures, and other valuable property with 304 stainless steel break-away shear nuts. Designed for tamper-resistant installations, these one-way security fasteners provide excellent corrosion resistance for outdoor, industrial, utility, marine-adjacent, and moisture-prone environments.

The hexagonal installation head separates once the proper tightening torque is reached. After the head breaks away, a smooth, tamper-resistant cone remains, making the nut difficult to grip or remove with standard tools. Removal generally requires grinding, cutting, drilling, or another destructive method.

Specifications

  • Thread Size: 3/8"-16 UNC

  • Fastener Type: Break-away shear nut

  • Material: 304 Stainless steel

  • Finish: Natural stainless steel

  • Installation Style: Hex head shears away during final tightening

  • Finished Appearance: Smooth, tamper-resistant cone

  • Corrosion Resistance: Better suited to outdoor and moisture-prone applications than Zamak

  • Designed for permanent and security-sensitive installations

  • No specialty installation socket required

  • Bolt or threaded stud is not included

  • Select your desired quantity before adding to cart

How Break-Away Nuts Work

Install the nut using a standard wrench or socket that fits the hexagonal head. As the nut is tightened, the upper hex section is designed to shear away at its predetermined breaking point. The remaining cone-shaped portion cannot be easily gripped with ordinary tools.

Because the head is intended to break away, these nuts are best suited for installations that do not require frequent removal or adjustment.

Common Applications

3/8"-16 break-away nuts may be used for:

  • Outdoor signs and mounting hardware

  • Utility equipment and enclosures

  • Trailer and transportation equipment

  • Fencing and gates

  • Public fixtures

  • Machinery guards

  • Security barriers

  • Commercial equipment

  • Property-protection installations

Important Installation Information

Confirm that 3/8"-16 is the correct thread size for your bolt or threaded stud before ordering.

Thread the nut on by hand first to ensure proper alignment. Tighten it using the appropriate standard wrench or socket until the hexagonal installation head separates. Do not continue attempting to tighten the remaining cone after the head has sheared away.

Break-away nuts are designed to discourage removal. Removal may require cutting, drilling, grinding, or another destructive method.

Important Notes

  • Designed for permanent or long-term installations

  • Stainless steel offers improved corrosion resistance for outdoor and exposed applications

  • Removal typically requires destructive methods such as grinding, drilling, or cutting

  • Once installed, these nuts are intentionally difficult to remove

Pack Quantity:

304 Stainless Steel Security Fastener for Outdoor, Utility & Commercial Applications

Protect equipment, signs, fixtures, and other valuable property with 304 stainless steel break-away shear nuts. Designed for tamper-resistant installations, these one-way security fasteners provide excellent corrosion resistance for outdoor, industrial, utility, marine-adjacent, and moisture-prone environments.

The hexagonal installation head separates once the proper tightening torque is reached. After the head breaks away, a smooth, tamper-resistant cone remains, making the nut difficult to grip or remove with standard tools. Removal generally requires grinding, cutting, drilling, or another destructive method.

Specifications

  • Thread Size: 3/8"-16 UNC

  • Fastener Type: Break-away shear nut

  • Material: 304 Stainless steel

  • Finish: Natural stainless steel

  • Installation Style: Hex head shears away during final tightening

  • Finished Appearance: Smooth, tamper-resistant cone

  • Corrosion Resistance: Better suited to outdoor and moisture-prone applications than Zamak

  • Designed for permanent and security-sensitive installations

  • No specialty installation socket required

  • Bolt or threaded stud is not included

  • Select your desired quantity before adding to cart

How Break-Away Nuts Work

Install the nut using a standard wrench or socket that fits the hexagonal head. As the nut is tightened, the upper hex section is designed to shear away at its predetermined breaking point. The remaining cone-shaped portion cannot be easily gripped with ordinary tools.

Because the head is intended to break away, these nuts are best suited for installations that do not require frequent removal or adjustment.

Common Applications

3/8"-16 break-away nuts may be used for:

  • Outdoor signs and mounting hardware

  • Utility equipment and enclosures

  • Trailer and transportation equipment

  • Fencing and gates

  • Public fixtures

  • Machinery guards

  • Security barriers

  • Commercial equipment

  • Property-protection installations

Important Installation Information

Confirm that 3/8"-16 is the correct thread size for your bolt or threaded stud before ordering.

Thread the nut on by hand first to ensure proper alignment. Tighten it using the appropriate standard wrench or socket until the hexagonal installation head separates. Do not continue attempting to tighten the remaining cone after the head has sheared away.

Break-away nuts are designed to discourage removal. Removal may require cutting, drilling, grinding, or another destructive method.

Important Notes

  • Designed for permanent or long-term installations

  • Stainless steel offers improved corrosion resistance for outdoor and exposed applications

  • Removal typically requires destructive methods such as grinding, drilling, or cutting

  • Once installed, these nuts are intentionally difficult to remove

Frequently Asked Questions