Professional Hex Washer Head Drilling Screws with EPDM Gasket Manufacturing

Directly Cut Chamfered Design with Heat Treatment and Black Phillips EPDM Sealing

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How Can Heat-Treated Drilling Screws with EPDM Gaskets Improve Assembly Reliability in Automotive Applications?

Our heat-treated hex washer head drilling screws with black Phillips EPDM gaskets eliminate the need for pre-drilling while providing integrated weatherproof sealing—critical for automotive exterior components exposed to temperature extremes and moisture. With documented heat treating reports and ISO-compliant inspection across 15+ measurement points, we ensure consistent drilling performance and gasket compression that meets automotive quality standards. Contact us to receive material certification and heat treatment documentation for your specific application requirements.

With 45 years of fastener manufacturing expertise, we deliver heat-treated drilling screws engineered for demanding applications requiring reliable drilling performance and environmental sealing. Our comprehensive measurement protocols monitor thread cutting width and depth, drilling tapping length and diameter, major and minor diameters, thread angle, pitch, and EPDM gasket outside diameter, height, and recess depth. The black washer gasket provides enhanced UV resistance and aesthetic appeal while delivering consistent compression sealing. Production capabilities span head diameters from M1.6 to M16/#00 to #5/8 and lengths from 1/8" to 12" (3.175mm to 600mm), enabling customized solutions for OEM manufacturers and aftermarket customers across automotive, electronics, construction, HVAC, and industrial equipment sectors seeking ISO-certified drilling screws with integrated sealing technology.

Directly Cut Chamfered Hex Washer Head - Directly Cut Chamfered Hex Washer Head Drilling Screw w/ Black Phillips EPDM
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Directly Cut Chamfered Hex Washer Head

SG005-140902-1

Process: Screw head shaping, thread rolling and washer molding before heat treating
All the items are inspected during the process and before shipping, complying with ISO Working Instruction
Inspection Tools: Calipers, Protrusion-height gage, Micrometer, 2.5D and 2D projector, Recess Penetration Gage, M5 Ring gage
Screw Measurement Points: Across the flat and corner, Washer diameter, Washer height, Thread cutting width, Thread cutting depth, Length, Head height, Major diameter, Minor diameter, Thread angle, Pitch, Drilling tapping length, Drilling tapping diameter
EPDM Measurement Points: Outside diameter, Height, Rec depth

Features

  • Drilling Screw
  • Heat Treating Reports Offered
  • Black Washer Gasket

Specification

  • Item Size: #8*1/2"
  • Available Material: 302HQ 304SS 305SS 316SS 410SS 420SS 430SS

Available Product

  • Head Diameter M1.6~M16/#00~#5/8
  • Length 1/8”~12”/3.175mm~600mm