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Hex Head Tek Screw With Integral Washer, Coated

Selected Hex Washer Head Self Drilling Tek Long Life Coated With Integral WasherHex Head Tek Screw With Integral Washer, Coated
Hex Washer Head Self Drilling Tek Long Life Coated With Integral WasherHex Head Tek Screw With Integral Washer, Coated

Hex head self drilling screws are fasteners that have a drill point which enables users to drill them directly into material without having to pre-drill a hole. Integral EPDM washer installed into the head provides a consistent weather-tight seal. As the washer is integral to the head, these screws are superior to screws with a separate washer since they eliminate corrosion due to moisture getting in between the head and the top of the washer. In addition to the standard drill points, some sizes are available in a stitch point for lap joints in metal roofing. These fasteners are available with a long life coating.

Products

#2 & #3 Standard Drill Point

#2 & #3 Standard Drill Point for Self Drilling Screws dimensions
SAE J78-2013
Nominal Size or
Basic Screw
Diameter		 Threads
per Inch		 T t P Minimum Practical Nominal Screw
Lengths, Formed Points		 Minimum
Torsional
Strength, lb - in
(STEEL SCREWS ONLY)
Major
Diameter		 Minor
Diameter		 Protrusion
Allowance
Max Min Max Min #2
Point		 #3
Point		 90° Head,
#2 Point		 Csk Head,
#2 Point		 90° Head,
#3 Point		 Csk Head,
#3 Point
#4 0.112 24 0.114 0.110 0.086 0.082 0.163 - 5/16 3/8 - - 14
#6 0.138 20 0.139 0.135 0.104 0.099 0.190 0.220 5/16 3/8 3/8 7/16 24
#8 0.164 18 0.166 0.161 0.122 0.116 0.211 0.251 3/8 7/16 7/16 1/2 42
#10 0.190 16 0.189 0.183 0.141 0.135 0.235 0.300 7/16 1/2 1/2 9/16 61
#12 0.216 14 0.215 0.209 0.164 0.157 0.283 0.353 1/2 5/8 1/2 5/8 92
#14 0.250 14 0.246 0.240 0.192 0.185 0.318 0.393 1/2 5/8 1/2 5/8 150
  1. All dimensions are in inches.
  Steel Stainless
Material AISI 1016 - 1024 or equivalent steel 410 or 18-8 stainless steel
Heat Treatment Screws shall be quenched in liquid and then
tempered by reheating to 625°F minimum.		 410 stainless steel screws shall be hardened
and tempered by heating to 1800°-1900°F
sufficient for austenitization, held for at least
1/2 hour and rapid air or oil-quenched then
reheating to 500°-600°F for at least 1 hour
and air cooled to provide the specified hardness.
Case Hardness Rockwell C52 - 58 410 SS: Rockwell C55 minimum
Case Depth No. 4 & 6 diameter: .002 - .007
No. 8 thru 12 diameter: .004 - .009
1/4 diameter & larger: .005 - .011		 -
Core Hardness Rockwell C32 - 40 (after tempering) 410 SS: Rockwell C38 - 42 (after tempering)
18-8 SS: Rockwell B90 - C25 (approx.)

 

 

#1 Drill Point for Self Drilling Stitch Screws dimensions
Nominal
Diameter		 Threads
per Inch		 W P
Drill Point Width Length of Drill Point
Max Min Max Min
#10 16 0.157 0.149 0.197 0.157
#12 14 0.183 0.173 0.236 0.197
#14 14 0.220 0.210 0.284 0.244
  1. AISI 1016 - 1024 or equivalent steel
  2. All dimensions are in inches.

Dimensional Specifications

 

Hex & Hex Washer Heads for Self-Tapping & Self-Drilling Screws dimensions
ASME B18.6.3-2013
Nominal
Size		 A W H F U
Width
Across Flats		 Width
Across
Corners		 Height of
Head		 Diameter of
Washer		 Thickness of
Washer
Max Min Min Max Min Max Min Max Min
#4 0.188 0.181 0.202 0.060 0.049 0.243 0.225 0.019 0.011
#6 0.250 0.244 0.272 0.093 0.080 0.328 0.302 0.025 0.015
#7 0.250 0.244 0.272 0.093 0.080 0.328 0.302 0.029 0.017
#8 0.250 0.244 0.272 0.110 0.096 0.348 0.322 0.031 0.019
#10 0.312 0.305 0.340 0.120 0.105 0.414 0.384 0.031 0.019
#12 0.312 0.305 0.340 0.155 0.139 0.432 0.398 0.039 0.022
#14 0.375 0.367 0.409 0.190 0.172 0.520 0.480 0.050 0.030
  1. All dimensions are in inches.