Minerallac 1/4"-20 x 2" Grade 2 Hex Head Tap Bolt with Zinc Plated Finish
Professional Grade Steel Fastening Solution
The Minerallac 1/4"-20 x 2" Grade 2 Hex Head Tap Bolt delivers reliable fastening performance with zinc plated steel construction and fully threaded design. This professional-grade hex head bolt provides superior strength compared to spaced thread screws, making it ideal for machine screw applications requiring dependable mechanical connections and corrosion resistance.
Professional Features & Benefits
- 1/4"-20 Thread Size: Standard threading ensures compatibility with common nuts and threaded holes for versatile installation options
- 2" Length: Optimal length provides sufficient engagement for secure fastening in various material thicknesses
- Grade 2 Steel Construction: Delivers reliable strength and durability for demanding mechanical fastening applications
- Hex Head Design: Enables efficient installation and removal using standard hex wrenches or sockets
- Zinc Plated Finish: Provides enhanced corrosion resistance for extended service life in various environmental conditions
- Fully Threaded Design: Maximizes thread engagement and holding power throughout the bolt length
Technical Specifications
- Country Of Origin: China
- Grade: Grade 2
- Head Type: Hex Head
- Product Diameter: 0.25
- Product Finish: Zinc Plated
- Product Length: 2.000 in
- Product Material: Steel
- Product Size: 1/4"-20 x 2
- Product Type: Hex Head Bolts
- Thread: 20
Professional Applications
- Machine Assembly and Manufacturing
- Structural Steel Connections
- Equipment Mounting and Brackets
- Mechanical Repair and Maintenance
- Industrial Machinery Applications
- Commercial Construction Projects
- Professional Workshop Operations
Why Choose Minerallac Quality?
Minerallac hex head tap bolts combine professional-grade steel construction with zinc plated corrosion protection, delivering dependable fastening performance for demanding applications. The Grade 2 specification ensures consistent strength characteristics, while the fully threaded design maximizes holding power and installation versatility.
Manufacturer Resources
Product Specs
- Grade:
- Grade 2
- Head Type:
- Hex Head
- Product Diameter:
- 0.25
- Product Finish:
- Zinc Plated
- Product Length:
- 2.000 in
- Product Material:
- Steel
- Product Size:
- 1/4"-20 x 2
- Product Type:
- Hex Bolt
- Thread:
- 20
- Department:
- Electrical
- Product Subgroup:
- Hex Bolts & Nuts
- Product Group:
- Hangers, Supports & Fasteners
Minerallac 55034J – Frequently Asked Questions
1) Will a 1/4-20 hex tap bolt thread into a standard 1/4-20 nut or tapped hole?
Yes. The Minerallac 55034J is a 1/4 inch diameter bolt with 20 threads per inch, which is the standard UNC coarse thread for that diameter, so it mates with any 1/4-20 nut, coupling, or tapped hole. Because it is fully threaded for the entire 2 inch length, you can run it into a tapped hole at any depth without worrying about an unthreaded shank bottoming out.
2) Is Grade 2 strong enough, or should I step up to Grade 5 for equipment mounting?
Grade 2 is low carbon steel, the general purpose strength class. It handles bracket mounting, enclosure and strut hardware, panel assembly, and maintenance fastening fine. If the connection is structural, carries vibration and real tensile load, or the engineer's drawing calls out a minimum tensile grade, specify a Grade 5 or Grade 8 bolt instead. The 55034J is a Grade 2 steel bolt.
3) What is the difference between a hex tap bolt and a regular hex cap screw?
A tap bolt is threaded all the way to the head instead of carrying a plain shank under it. That is what the 55034J is: a 1/4-20 x 2 inch hex head bolt, fully threaded. Use a tap bolt when you are threading into a tapped hole of unknown or shallow depth, or when you need maximum thread engagement through a stack of material. A partially threaded cap screw is the better pick when you want the smooth shank bearing in a reamed hole to resist shear.
4) Can zinc plated bolts be used outdoors or in a damp mechanical room?
Zinc plating gives this 1/4-20 steel bolt moderate corrosion protection, which is enough for indoor, covered, and dry-to-damp locations. For continuous wet exposure, coastal air, or anything in contact with chemicals, go to hot dip galvanized or stainless. Keep in mind that cutting or grinding a plated bolt exposes bare steel at the cut.
5) Do nuts and washers come with these bolts, or do I order them separately?
Bolts only. The 55034J is supplied as 1/4-20 x 2 inch hex head tap bolts with no nuts, flat washers, or lock washers in the pack, so add 1/4-20 hex nuts and 1/4 inch washers to the order if the connection is a through-bolt rather than a tapped hole.
6) Is this the right fastener for mounting electrical boxes, strut, and conduit hardware?
Yes, 1/4-20 is the common thread for strut channel nuts, beam clamps, conduit hanger hardware, and box and enclosure mounting, and this zinc plated Grade 2 bolt in 2 inch length covers that work. Note that strut spring nuts and some clamps are also sold in 3/8-16 and 1/2-13, so confirm the thread stamped on your channel nut before ordering 1/4-20.
7) What size wrench or socket do I need for this 1/4-20 hex bolt?
It takes a 7/16 inch wrench or socket. That is the standard across-flats size for a 1/4 inch hex head bolt, and the hex head lets you drive it with a ratchet, nut driver, or impact rather than a screwdriver.
8) What is the Minerallac part number for the 1/4-20 x 2 inch zinc hex tap bolt?
Order it as Minerallac 55034J. The identifying specs are 1/4-20 x 2 inch, hex head, fully threaded, Grade 2 steel with a zinc plated finish, supplied 100 to a jar.
How fast can I get the Minerallac 55034J 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 55034J come with a warranty?
Absolutely. The Minerallac 55034J 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 55034J?
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