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Hex 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
Drill Point Specifications
Head Dimensions

Drill Point Specifications

#2 & #3 Standard Drill Point Self Drilling Screws

#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		Minimum Practical Nominal Screw Lengths, Formed Points
			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

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 Self Drilling Stitch Screws

#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

AISI 1016 - 1024 or equivalent steel
All dimensions are in inches.

Hex Head Tek Screw With Integral Washer, Coated

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Diameter Length Tek Type Item # Availability Price Quantity UOM

#12

3/4

DWHC 120075ULT

In Stock

$0.21391/EA

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12 X 3/4 HEX HEAD #3 TEK WITH INTEGRAL WASHER, COATED

$0.21391/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.21391/EA
1000	$0.20178/EA
4000	$0.17789/EA
18000	$0.1253/EA

#12

DWHC 120100ULT

In Stock

$0.217/EA

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12 X 1 HEX HEAD #3 TEK WITH INTEGRAL WASHER, COATED

$0.217/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.217/EA
800	$0.20469/EA
3200	$0.18046/EA
14400	$0.12711/EA

#12

1 1/4

DWHC 120125ULT

In Stock

$0.38694/EA

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12 X 1 1/4 HEX HEAD #3 TEK WITH INTEGRAL WASHER, COATED

$0.38694/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.38694/EA
480	$0.36499/EA
1910	$0.32178/EA
8580	$0.22665/EA

#14

7/8

Stitch

DWHC 140087ULT

In Stock

$0.45366/EA

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14 X 7/8 HEX HEAD STICH SCREW WITH INTEGRAL WASHER, COATED

$0.45366/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.45366/EA
590	$0.42793/EA
2360	$0.37727/EA
10590	$0.26573/EA

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

Hex Head Tek Screw With Integral Washer, Coated

Technical Data

Drill Point Specifications

#2 & #3 Standard Drill Point Self Drilling Screws

#1 Drill Point Self Drilling Stitch Screws

Head Dimensions

Dimensional SpecificationsHex & Hex Washer Heads for Self-Tapping & Self-Drilling Screws

Diameter

Length

Width Across Flats

Drive Size

12 X 3/4 HEX HEAD #3 TEK WITH INTEGRAL WASHER, COATED

12 X 1 HEX HEAD #3 TEK WITH INTEGRAL WASHER, COATED

12 X 1 1/4 HEX HEAD #3 TEK WITH INTEGRAL WASHER, COATED

14 X 7/8 HEX HEAD STICH SCREW WITH INTEGRAL WASHER, COATED