Metallics Self-Drilling & Tapp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.31
$35.63
Metallics 12 x 1 in. 5/16 Indented Hex Head Self-Drilling & Tapping Screws with Washer - #3 Drill Point - Steel Zinc - 100qty

Metallics Self-Drilling & Tapping Screw #12 x 1" 5/16 Indented Hex Head with Washer Steel Zinc #3 Drill Point, 100 Pack

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Model: JTEKD8
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.31
$35.63
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Metallics Industries Self-Drilling & Tapping Screw #12 x 1" 5/16 Indented Hex Head with Washer Steel Zinc #3 Drill Point

Professional Self-Drilling Fastener with Integrated Washer

The Metallics Industries Self-Drilling & Tapping Screw delivers exceptional performance and reliability for electrical, plumbing, heating and air conditioning applications. This steel zinc self-drilling fastener with integrated washer provides dependable fastening solutions designed for professional contractors, electricians, and industrial technicians, offering the proven quality and precision engineering that professionals trust from a leading manufacturer of electrical hardware and industrial fasteners.

Professional Features & Benefits

Advanced Drilling Performance

  • #3 Drill Point Design - Engineered for efficient drilling through metal panels with 2.5 second drill time for 1mm thick plates, providing fast installation and reduced labor time
  • 5/16 Indented Hex Head with Hex Drive - Professional hex drive system ensures secure tool engagement and optimal torque transfer for reliable installation
  • Integrated Washer Construction - Built-in washer with 0.398-0.432 inch outer diameter and 0.022-0.039 inch thickness provides superior sealing and load distribution
  • Steel Zinc Material with Rockwell C32-40 Hardness - High-strength steel construction with zinc finish delivers corrosion resistance and durability for demanding applications

Professional Installation Features

  • Self-Drilling & Tapping Action - Eliminates need for pre-drilling, reducing installation time and improving productivity on job sites
  • 14 Threads Per Inch - Precision threading per SAE J78-2013 standard ensures reliable engagement and holding power
  • Panel Thickness Range 0.110-0.210 inches - Optimized for standard electrical panel and HVAC applications with consistent performance

Technical Specifications

Material: Steel Zinc per AISI 1016-1024 standard, Finish: Zinc coating, Fastener Length: 1 inch, Drill Point: #3 size, Drive Type: Hex, Fastener Head Type: 5/16 Indented Hex, Head Height: 0.139-0.155 inches, Head Width: 0.305-0.312 inches, Thread Per Inch: 14, Thread Standard: SAE J78-2013, Hardness: Rockwell C32-40, Torsional Strength: 92 lb-in minimum, Dimensional Standard: ASME B18.6.3-2010, Washer OD: 0.398-0.432 inches, Washer Thickness: 0.022-0.039 inches, Panel Thickness Range: 0.110-0.210 inches, Width Across Corners: 0.34 inches, Pack Type: Jar, Order Minimum: 100 pieces

Installation & Usage

  1. Select appropriate hex driver bit for secure tool engagement with indented hex head
  2. Position screw perpendicular to work surface ensuring proper alignment for drilling
  3. Apply steady downward pressure while engaging drill to allow #3 drill point to penetrate material
  4. Continue drilling until washer contacts panel surface for proper sealing
  5. Complete installation by driving screw to specified torque without over-tightening
  6. Verify secure fastening and proper washer compression for optimal performance

Professional Applications

Ideal for:

  • Electrical Panel Installation - Securing electrical panels, junction boxes, and control cabinets with reliable fastening and sealing
  • HVAC System Assembly - Mounting ductwork, air handling units, and ventilation components with corrosion-resistant fastening
  • Plumbing Applications - Installing pipe supports, brackets, and plumbing fixtures requiring secure metal-to-metal fastening
  • Industrial Equipment Mounting - Securing machinery components, control panels, and industrial hardware with high-strength fastening
  • Construction Fastening - Metal building construction, structural connections, and architectural hardware installation
  • Maintenance and Repair - Equipment servicing, panel replacement, and facility maintenance applications
  • Commercial Installation - Office buildings, retail spaces, and commercial facilities requiring professional-grade fastening
  • Telecommunications Equipment - Mounting communication panels, server racks, and electronic enclosures

Steel Zinc Construction Advantage

The steel zinc construction provides exceptional durability and corrosion resistance for electrical, plumbing, and HVAC applications. The zinc finish offers superior protection against environmental factors while maintaining the high strength characteristics of steel construction. The AISI 1016-1024 material standard ensures consistent quality and performance, while the Rockwell C32-40 hardness provides optimal drilling capability and thread engagement strength for professional installations.

Why Choose Metallics Industries Quality?

Metallics Industries' commitment to precision manufacturing ensures every self-drilling screw meets exacting standards for professional applications. Our quality materials and finishes, combined with reliable performance specifications, make these fasteners the trusted choice for contractors, electricians, and industrial professionals. Comprehensive product testing and adherence to industry standards like SAE J78-2013 and ASME B18.6.3-2010 guarantee consistent performance in electrical, plumbing, HVAC, and construction applications, delivering the dependable solutions professionals demand.

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
N
Buy American Compliant:
No
Country Of Origin:
MUL
Dimensional Standard:
ASME B18.6.3-2010
Division:
Electrical H1
Drill Point Size:
#3
Drive Type:
Hex
Fastener Head Height:
0.139 - 0.155 in.
Fastener Head Type:
Indented Hex
Fastener Head Width:
0.305 - 0.312 in.
Fastener Length:
1
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
Hardness:
Rockwell C32-40
Language Code:
EN
Material Standard:
AISI 1016 - 1024
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Head_Self-Drill_TS_Indent_Hex_Washer.pdf
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
JR
Pack Type:
Jar
Panel Thickness:
0.110 - 0.210 IN
Product Family:
Electrical Supplies
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
0.995 lbs
Product Width:
3 in
Remarks:
The catalog UPC differ from the tarnsaction daat spreadsheet UPC
Screw Point Type:
Drill Point
Slot Depth:
0.077 - 0.093
Slot Width:
0.056 - 0.067
Sub Division:
Electrical-E H2
Thread Per Inch:
14
Thread Standard:
SAE J78 - 2013
Torsional Strength:
92 lb-in minimum
Washer Od:
0.398 - 0.432 in.
Washer Thickness:
0.022 - 0.039 IN
Width Across Corners:
0.34
Product Type:
Self-Drilling & Tapping Screw
Product Group:
Fasteners
Department:
Electrical
Product Subgroup:
Screws
Type2:
Type BSD Self-Drilling & Tapping Screw
Series:
JTEKD
Product Finish:
Zinc
Product Details:
Type BSD Self-Drilling & Tapping Screw
Product Material:
Steel Zinc

Metallics JTEKD8 – Frequently Asked Questions

1) Is the washer on this screw a sealing washer for outdoor or roofing use?
It is a bonded-free integral steel washer, 0.398 to 0.432 inches outside diameter and 0.022 to 0.039 inches thick. That spreads clamp load over sheet metal and keeps the head from pulling through thin panel, but there is no rubber or EPDM bonded to it, so it does not weather-seal a penetration. For exterior roof or wall panel work where water intrusion matters, use a screw with a bonded neoprene washer instead.
2) Are Metallics JTEKD8 self-drilling screws Buy American or ARRA compliant for a government job?
No on both counts. The JTEKD8 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your project carries a domestic sourcing requirement, this fastener will not satisfy it.
3) Do I need to pre-drill before running these Metallics hex head screws into metal?
No pre-drilling. The JTEKD8 is a Type BSD self-drilling and tapping screw, so the point cuts the hole and the 14 threads per inch tap it in one pass. Set the screw perpendicular, apply steady pressure, and let the point cut before the thread bites. Backing off pressure mid-drill is what snaps points.
4) Will a zinc plated steel screw hold up outdoors or in a damp mechanical room?
Zinc finish over AISI 1016-1024 carbon steel gives corrosion resistance suited to interior and protected applications, which is what most electrical panel, duct, and pipe support work is. Sustained wet exposure, coastal air, or chemical environments will eventually take the plating off a zinc screw. For those, specify stainless or a coated fastener.
5) How much torque can these screws take before the head twists off?
Minimum torsional strength is 92 lb-in, with case hardness at Rockwell C32-40. That is enough for a standard impact-rated screw gun on metal, but a high-torque impact driver run wide open will exceed it. Use a depth-sensitive screwgun or clutch setting and stop once the washer seats flat on the panel.
6) What standards do these #12 self-drilling tapping screws conform to?
Threads are made to SAE J78-2013 and head dimensions to ASME B18.6.3-2010, with steel per AISI 1016-1024. If a submittal or spec section calls out SAE J78 self-drilling tapping screws, the JTEKD8 meets that thread standard.
7) Is a 1 inch long #12 screw long enough for strut, duct flange, or panel mounting?
Overall length is 1 inch, which after the #3 drill point leaves enough thread to engage panel stock in the 0.110 to 0.210 inch range plus a mounted item of modest thickness. Stacking two thick flanges or shimming behind a bracket can leave you short of full thread engagement past the far side; in that case go to a longer screw of the same point size.
8) How many screws come in a jar and what is the minimum order?
Sold in a jar of 100 pieces, and 100 is the order minimum, so one jar is the smallest buy. Shipping weight for the jar is 0.995 lbs.
9) Can these be used for mounting electrical enclosures and HVAC duct, or are they duct screws only?
Field application covers electrical, plumbing, and heating and air conditioning work. In practice that means junction boxes and control cabinets, duct and air handler assembly, and pipe support brackets, anywhere you are fastening metal to metal within the 0.110 to 0.210 inch panel range. They are not a wood or masonry fastener.
How fast can I get the Metallics JTEKD8 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 JTEKD8 come with a warranty?
Absolutely. The Metallics JTEKD8 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 JTEKD8?
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 JTEKD8 from ZenSupply?
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