Minerallac 3/8-16 x 1/2" Round Head Machine Screws with Combo Phillips/Slotted Drive and Zinc Plated Finish
Professional Grade Steel Machine Screws with Corrosion-Resistant Zinc Plating
Minerallac delivers reliable fastening solutions with these 3/8-16 x 1/2" round head machine screws, engineered from durable steel construction with zinc plated finish for enhanced corrosion resistance. The combo Phillips/slotted drive design provides versatile installation options while the round head profile ensures secure, professional connections in electrical and mechanical applications.
Professional Features & Benefits
- 3/8-16 Thread Size: Standard coarse threading provides strong holding power and reliable engagement in tapped holes and threaded assemblies.
- Steel Construction: High-strength steel material delivers exceptional durability and mechanical performance for demanding applications.
- Zinc Plated Finish: Corrosion-resistant coating extends service life and maintains appearance in various environmental conditions.
- Round Head Design: Low-profile head with 0.689" diameter provides secure fastening while minimizing protrusion from mounting surface.
- Combo Drive System: Dual Phillips/slotted drive configuration accommodates multiple driver types for installation flexibility.
- Precision Dimensions: 1/2" length and consistent head height of 0.246" ensure proper fit and professional installation results.
Technical Specifications
- Country Of Origin: China
- Drive Type: Combo Slotted / Phillips
- Head Color: Silver
- Head Diameter: 0.689
- Head Height: 0.246
- Head Type: Round Head
- Product Finish: Zinc Plated
- Product Length: 0.500 in
- Product Material: Steel
- Product Size: 3/8-16 x 1/2
- Product Type: Machine Screw
- Thread Size: 16
Professional Applications
- Electrical Panel Assembly and Component Mounting
- Control Cabinet and Enclosure Installation
- Equipment Bracket and Support Structure Assembly
- Industrial Machinery Component Fastening
- Commercial Building System Installation
- Maintenance and Repair Operations
Why Choose Minerallac Quality?
Minerallac machine screws combine precision manufacturing with reliable steel construction and protective zinc plating, ensuring consistent performance and long-term durability in professional electrical and mechanical fastening applications.
Manufacturer Resources
Product Specs
- Country Of Origin:
- China
- Drive Type:
- Combo Slotted / Phillips
- Head Color:
- Silver
- Head Diameter:
- 0.689
- Head Height:
- 0.246
- Head Type:
- Round Head
- Product Finish:
- Zinc Plated
- Product Length:
- 0.500 in
- Product Material:
- Steel
- Product Size:
- 3/8-16 x 1/2
- Product Type:
- Machine Screw
- Thread Size:
- 16
- Department:
- Electrical
- Product Subgroup:
- Machine Screws
Minerallac 53208J – Frequently Asked Questions
1) Will a 3/8-16 x 1/2 inch machine screw thread into a standard tapped 3/8 inch coarse hole?
Yes. The Minerallac 53208J is a 3/8-16 machine screw, which is the standard coarse (UNC) pitch for a 3/8 inch diameter, so it engages any tapped hole or nut cut 3/8-16. With only 1/2 inch of overall length, plan on roughly full-length thread engagement in the tapped material, so it is meant for thin panel and bracket work rather than deep through-bolting.
2) Can these Minerallac screws be driven with a Phillips bit, or do I need a flat blade?
Either works. The head has a combination slotted/Phillips recess, so an electrician can run them with a Phillips driver on a screwgun or back them out with a flat blade from a pocket screwdriver. That matters on panel and enclosure work where you are not carrying a full bit set up a ladder.
3) Are zinc plated steel machine screws suitable for outdoor or damp locations?
These are steel with a zinc plated finish, which handles indoor electrical rooms, control cabinets and general dry or occasionally damp interiors. Zinc plating is a sacrificial coating, not stainless, so for continuous wet exposure, coastal air, or washdown areas, specify stainless steel fasteners instead.
4) What is the difference between a machine screw like this and a self-tapping or sheet metal screw?
A machine screw has a uniform machine thread (here 3/8-16) and a blunt end. It needs a pre-tapped hole or a nut; it will not cut its own thread. If you are fastening into unthreaded sheet metal with no nut behind it, use a self-drilling or sheet metal screw. For mounting into tapped bosses, strut nuts, or threaded brackets in a panel, the machine screw is the correct fastener.
5) Is the Minerallac 53208J sold individually or in a box?
It ships as a 100 piece pack under Minerallac part number 53208J. That is the quantity to expect per order, which suits MRO stock and repeat panel assembly rather than a one screw replacement.
6) What colour are these screw heads, and will they blend with a grey electrical enclosure?
The heads are silver from the zinc plating, a bright metallic finish typical of plated steel hardware. They read as bare metal against painted grey or white enclosures, so on finished trim work where appearance matters, a painted or black oxide fastener is the better call.
How fast can I get the Minerallac 53208J 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 53208J come with a warranty?
Absolutely. The Minerallac 53208J 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 53208J?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
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