Minerallac 3/8-16 x 1-1/4" Hex Head Tap Bolt, Fully Threaded, 18-8 Stainless Steel
Professional Grade Fastening Solution for Demanding Applications
The Minerallac 3/8-16 x 1-1/4" Hex Head Tap Bolt delivers reliable fastening performance with fully threaded construction and premium 18-8 stainless steel material. This professional-grade tap bolt provides superior corrosion resistance and durability for electrical installations, industrial applications, and construction projects requiring dependable mechanical connections.
Professional Features & Benefits
- 3/8-16 Thread Size: Standard threading ensures compatibility with common nuts and threaded components for versatile installation options.
- 1-1/4" Length: Optimal length provides secure engagement while accommodating various material thicknesses and connection requirements.
- Hex Head Design: Six-sided head allows for positive grip with standard wrenches and sockets, enabling reliable installation torque.
- Fully Threaded Construction: Complete threading along the bolt length maximizes holding power and provides flexible positioning options.
- 18-8 Stainless Steel Material: Premium austenitic stainless steel composition delivers excellent corrosion resistance and long-term durability in challenging environments.
- Tap Bolt Configuration: Self-threading design eliminates the need for pre-tapped holes in many applications, reducing installation time and complexity.
Technical Specifications
- Country Of Origin: Taiwan
Professional Applications
- Electrical Panel and Enclosure Assembly
- Industrial Equipment Mounting
- Construction and Building Systems
- HVAC Equipment Installation
- Commercial Facility Maintenance
- Infrastructure and Utility Projects
- Marine and Outdoor Applications
Why Choose Minerallac Quality?
Minerallac tap bolts represent proven reliability in professional fastening applications. The 18-8 stainless steel construction ensures consistent performance and longevity, while the precision manufacturing delivers dependable mechanical properties for critical connections across diverse industrial and commercial environments.
Manufacturer Resources
Product Specs
- Department:
- Electrical
- Product Subgroup:
- Hex Bolts & Nuts
- Product Type:
- Hex Bolt
- Product Group:
- Hangers, Supports & Fasteners
Minerallac 74422J – Frequently Asked Questions
1) What thread size and wrench size do I need for the Minerallac 74422J tap bolt?
The 74422J is a 3/8-16 bolt, so it mates with standard 3/8-16 UNC nuts, coupling nuts, strut channel nuts and tapped holes. The head is a hex, driven with a standard wrench or socket, and 3/8-16 hex head bolts normally take a 9/16 inch wrench.
2) Is this bolt threaded all the way to the head, or is there a shoulder?
Fully threaded from tip to head, with no unthreaded shank. That is what makes it a tap bolt, and it lets you set the grip anywhere along the 1-1/4 inch length, which is useful with strut nuts, thin brackets and stacked washers. If your joint needs an unthreaded shank bearing in the hole for shear alignment, use a partially threaded hex cap screw instead.
3) Will 18-8 stainless hold up outdoors or in a damp mechanical room?
The material is 18-8 austenitic stainless, which resists corrosion in wet, humid and outdoor environments far better than plain or zinc-plated steel, so it suits exterior conduit supports, rooftop HVAC mounts and damp equipment rooms. In direct salt spray, 316 stainless is the better grade; 18-8 is the general-purpose corrosion-resistant choice.
4) How much material thickness can a 1-1/4 inch long 3/8-16 bolt actually clamp?
At 1-1/4 inches overall under the head, you have 1-1/4 inches of usable length to split between the material you are clamping and the nut or tapped depth. In practice that covers a bracket plus strut channel, or two thin plates with a nut and washer. For deeper stack-ups or through-bolting thicker steel, step up to a longer 3/8-16 bolt.
5) Can I use these stainless tap bolts with strut channel and conduit clamps?
Yes, 3/8-16 is the common trade thread for strut channel nuts and conduit clamp hardware, and the full threading means the bolt engages a channel nut at any depth. The 18-8 stainless body matches stainless strut and clamp hardware so you are not mixing dissimilar metals in a wet location.
6) How many bolts come in the Minerallac 74422J pack?
It ships as a 100 piece jar under part number 74422J, which is a practical restock quantity for an MRO cart or an electrical crew running repetitive conduit and enclosure mounting. Nuts and washers are separate items.
7) Where are Minerallac 74422J bolts made?
Country of origin is Taiwan. That matters on public and institutional jobs where domestic sourcing is a bid condition, so check the spec before submitting these on a Buy American project.
How fast can I get the Minerallac 74422J delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Minerallac 74422J come with a warranty?
Absolutely. The Minerallac 74422J is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Minerallac 74422J?
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installation tips, and troubleshooting. Contact Us
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