Metallics JSRM311 1/4-20 x 3/4...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$385.71
Metallics JSRM311 1/4-20 x 3/4 in. Round Head Slotted Machine Screws - 316 Stainless - 100qty

Metallics JSRM311 1/4-20 x 3/4 in. Round Head Slotted Machine Screws - 316 Stainless - Each

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Model: JSRM311
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$385.71
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1/4-20 x 3/4 in. Round Head Slotted Machine Screws - 316 Stainless - 100qty

  • Features

    • 316 stainless Material
    • Round head with slotted Drive
    • 1/4-20 Diameter, 3/4" Length

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Division:
Electrical H1
Fastener Head Type:
Round
Pack Type:
Jar
Product Group:
Fasteners
Sub Division:
Electrical-E H2
Department:
Electrical
Product Subgroup:
Screws
Product Material:
316 Stainless

Metallics JSRM311 – Frequently Asked Questions

1) Are these machine screws OK for outdoor or coastal/marine use?
316 stainless is the grade to use outdoors, and that is what the JSRM311 is made from. 316 adds molybdenum over 304, which is why it is the common choice for salt air, coastal sites, pool rooms, and washdown areas. For a dry indoor panel or junction box, plain 304 or zinc-plated steel does the same mechanical job at less cost.
2) Will a round head slotted screw sit flush in a countersunk hole?
No. The JSRM311 has a round head, which is a domed head that seats on top of the surface, not in it. If the hole is countersunk and you need a flush face, you want a flat head screw instead. Round head works where there is clearance above the part and you want more bearing surface against a thin panel or a slotted hole.
3) Do the JSRM311 screws include nuts or washers?
No, these are the screws only. A 1/4-20 machine screw needs either a matching 1/4-20 nut or a tapped hole to thread into, and if you want corrosion performance to match the screw, specify the nuts and any flat or lock washers in 316 stainless as well. Mixing a 316 screw with a plated steel nut outdoors gives you a rusting nut.
4) What driver do I need for the Metallics JSRM311?
A flat-blade screwdriver. These are slotted drive, not Phillips, Torx, or hex. Slotted suits electrical work where screws get driven by hand and torque is modest, but it cams out easily under a power driver, so use a hand driver with a blade that fills the slot.
5) Do these screws come loose or packaged?
The JSRM311 1/4-20 screws are supplied in a jar rather than loose in a bag or box, which is the usual way Metallics ships this size for shop and service-truck stock.
6) Will stainless machine screws gall when I tighten them?
Stainless on stainless can gall, and 316 is prone to it, so run the nut on slowly, avoid high-speed driving, and use an anti-seize on the 1/4-20 threads if you are torquing them up hard. These are slotted drive anyway, so hand driving is the normal method and galling is rarely an issue at this size.
How fast can I get the Metallics JSRM311 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 Metallics JSRM311 come with a warranty?
Absolutely. The Metallics JSRM311 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 Metallics JSRM311?
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
Why buy the Metallics JSRM311 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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