Metallics JSPM344SS 4-40 x 3/8...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.29
$0.29
Metallics JSPM344SS 4-40 x 3/8 in. Pan Head Slotted Machine Screws - 18-8 Stainless - 100qty

Metallics JSPM344SS 4-40 x 3/8 in. Pan Head Slotted Machine Screws - 18-8 Stainless - Each

(No reviews yet) Write a Review

Model: JSPM344SS
Selected Model is

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

$50.29
$0.29
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like
4-40 x 3/8 in. Pan Head Slotted Machine Screws - 18-8 Stainless - 100qty

  • Additional Notes

    • Other sizes and quantities available by request | Tensile strength values for stainless screws are offered as approximations only; there is no single standard for the performance requirements of stainless machine screws.

  • Features

    • Pan head with slotted Drive
    • 4-40 Diameter, 3/8" Length
    • 18-8 Stainless Material

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
C
Buy American Compliant:
C
Dimensional Standard:
ASME B18.6.3-2010
Division:
Electrical H1
Drive Type:
Slotted
Fastener Head Height:
0.058 - 0.068 in.
Fastener Head Type:
Pan
Fastener Head Width:
0.205 - 0.219 in.
Fastener Length:
8-Mar
Hardness:
Rockwell BBS-B9S
Language Code:
EN
Material Standard:
SAE
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Pan_Head_Screw_St_SS.pdf
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
CT
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
0.14 lbs
Product Width:
3 in
Slot Depth:
0.03 - 0.04
Slot Width:
0.031 - 0.039
Sub Division:
Electrical-E H2
Tensile Strength:
80000 psi minimum
Thread Per Inch:
40
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Machine Screw
Type2:
Machine Screw
Series:
SPM
Product Details:
Machine Screw
Product Material:
18-8 Stainless

Metallics JSPM344SS – Frequently Asked Questions

1) Will a 4-40 x 3/8 in. machine screw thread into a standard device or switch plate tapped hole?
The Metallics JSPM344SS is a 4-40 thread with 40 threads per inch, which is the common small machine screw thread used on electrical device and plate hardware. The 3/8 in. length keeps it short enough for thin plate and bracket work. If your existing screws measure 6-32, this will spin free in the hole and you need the 6-32 size instead.
2) Do these machine screws meet a published dimensional standard for government or spec work?
Head, slot and thread dimensions conform to ASME B18.6.3-2010, with material called out to SAE. The screws are also flagged ARRA compliant and Buy American compliant, which is what an institutional or municipal buyer usually has to document. Country of origin is China.
3) How much does the pan head stick up, and will it sit flush?
A pan head does not sit flush, it seats on top of the surface. Head height on the JSPM344SS runs 0.058 to 0.068 in. with a head width of 0.205 to 0.219 in., so you get a low, broad crown over the hole. If you need the head buried in the material, you want a flat head countersunk screw, not a pan head.
4) Are these 18-8 stainless screws OK for outdoor or damp locations?
Material is 18-8 stainless, the standard austenitic grade used where plated steel would rust, so it holds up in damp interior and general exterior service. For salt spray or coastal marine exposure, 316 stainless is the better choice.
5) What screwdriver do I need, and can I run these with a drill?
Drive is a single slot, with slot width 0.031 to 0.039 in. and slot depth 0.03 to 0.04 in. That calls for a small flat blade (cabinet tip) hand driver. Slotted drive cams out easily under power, so these are hand-driven work; if you want to run them with a driver, specify a Phillips pan head instead.
6) How are these 4-40 pan head screws packaged, and what is the minimum order?
They ship in a jar, 100 count, and 100 is the order minimum. Total weight of the jar is 0.14 lbs. Other sizes and quantities are available by request.
7) How strong is a 4-40 stainless machine screw? Can I rely on the tensile rating?
Tensile strength is listed at 80,000 psi minimum with hardness reported as Rockwell BBS-B9S. Treat that as approximate: there is no single standard governing performance requirements for stainless machine screws, so the value is published as a guide rather than a certified load rating. For a structural or load-bearing connection, use a fastener with a graded strength spec.
8) Will stainless screws cause a problem in an aluminum enclosure or box?
18-8 stainless and aluminum are dissimilar metals, so in persistently wet or salt exposure you can get galvanic corrosion at the joint. Indoors and in dry enclosures it is not a practical issue, and stainless is still the better pick over plated steel where moisture is present. The 4-40 thread and 3/8 in. length suit thin sheet metal and device mounting.
9) What is the Metallics part number for the 4-40 x 3/8 in. slotted pan head stainless screw?
Order it as JSPM344SS, from the Metallics SPM series of machine screws.
How fast can I get the Metallics JSPM344SS 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 JSPM344SS come with a warranty?
Absolutely. The Metallics JSPM344SS 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 JSPM344SS?
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 JSPM344SS 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.
!