CRETE-FLEX 410 Stainless
Steel Screw Anchor
Instruction Manual
CRETE-FLEX ®
410 Stainless Steel Concrete and
masonry fasteners

GENERAL INFORMATION

PRODUCT DESCRIPTION
The Crete-Flex anchor is a 410 stainless steel screw anchor for light to medium duty applications in concrete and masonry block base materials. Crete- Flex anchors utilize more robust threads for enhanced thread engagement and “V” notches for efficient tapping. These features provide reduced installation torque and increased performance. Crete-Flex anchors feature a stalgard coating and provide enhanced corrosion resistance over carbon steel fasteners.

GENERAL APPLICATIONS AND USES

• Window Frames
• screens and Utilities
• Light Duty Industrial Applications
• Metal Door Frames
• shutters and Guards
• Light Duty Fixtures

FEATURES AND BENEFITS

• special heat treament provides increased ductility and corrosison resistance
• Larger-than-normal root diameters offers improved performance, including higher shear strengths
• stalgard ® coating provides 1000 hours of salt spray resistance when tested in accordance with AsTM b117
• Available in various head styles to fit the intended application

APPROVALS AND LISTINGS

• Tested in accordance with AsTM E488
• Miami-Dade County Notice of Acceptance (NoA) No. 21-0201.08
• Florida statewide Product Approval FL29068.1

GUIDE SPECIFICATIONS

CsI Divisions: 03 16 00 – Concrete Anchors, 04 05 19.16 – Masonry Anchors and 05 05 19 – PostInstalled Concrete Anchors.
screw anchors shall be Crete-Flex as supplied by DEWALT, Towson, MD.Concrete screw anchors shall be installed in accordance with published instructions and the AuthorityHaving Jurisdiction.

HEAD STYLES

• Hex Washer Head
• Hex Flange Head
• Phillips Flat Head
• Phillips TrimFit ® Flat Head

ANCHOR MATERIALS

• Type 410 stainless steel withstalgard ®Coating

ANCHOR SIZE RANGE

• 3/16″ diameter x 1-1/4″ to 3-1/4″ lengths

• 14 diameter x 1-1/4″ to 6″ lengths

SUITABLE BASE MATERIALS

• Normal-weight Concrete
• Grouted Concrete Masonry
• Hollow Concrete Masonry (CMU)
• Wood

MATERIAL SPECIFICATIONS

B117 salt spray test

INSTALLATION SPECIFICATIONS

Crete-Flex 410 Stainless Steel Carbon Steel Hex Head 1,4

Dimension

| Nominal Anchor Diameter
---|---
3/16″ HWH| 3/16″ PFH| #14

HWH

| #14

HFH

| #14

PFH

| #14

TFH

Anchor Shank Diameter (in.)| 0.160| 0.160| 0.215| 0.215| 0.215| 0.215
Drill Bit Size2 (in)| 5/32 UltraCon+ Bit| 5/32 UltraCon+ Bit| 7/32 ANSI| 7/32 ANSI| 7/32 ANSI| 7/32 ANSI
Typ. Fixture Clearance hole (in)| 1/4| 1/4| 5/16| 5/16| 5/16| 5/16
Head Height3 (in.)| 7/64| 5/32| 9/64| 7/32| 5/32| 9/64
Head Width (in)| 1/4| 13/32| 5/16| 5/16| 1/2| 13/32
Washer O.D. (in)| 11/32| N/A| 13/32| 5/8| N/A| N/A
Washer Thickness (in)| 1/32| N/A| 3/64| N/A| N/A| N/A
Hex Driver (in) / Phillips Driver| 1/4| #3| 5/16| 5/16| #3| #3
HWH = Hex Washer Head, HFH = Hex Flange Head, PFH = Phillips Flat Head, TFH = TrimFit® Flat Head
1.   For minimum nominal embedment depths, hnom, see the performance data tables. The minimum hole depth, ho, is 1/4-inch more than the selected nominal embedment depth.
2.   3/16-inch diameter Crete-Flex anchors require the use of a special tolerance UltraCon+ drill bit which have a tolerance range of 0.170″ to 0.176″.
3.   Head Height of Hex Flange Head Anchors include the thickness of the flange.
4.   Pre-drilling is not required for Crete-Flex into wood (but can be considered).

Crete-Flex Identification

| | |
---|---|---|---
Hex Washer Head (HWH)| Hex Flange Head (HFH)| Phillips Flat Head (PFH)| TrimFit Flat Head (TFH)

The head markings consist of a “D” for the DEWALT brand, the number “4” for the 410 series stainless steel classification, and the length code. TrimFit flat head variations also include a star

Crete-Flex Length Code Identification System

Length ID marking on head| **| A| B| C| D| E| F| G| H**
---|---|---|---|---|---|---|---|---|---
Overall anchor length

ℓ anch  (inches)

| From| 1″| 1-1/2″| 2″| 2-1/2″| 3-1/4″| 3-1/2″| 4″| 4-1/2″| 5-1/2″
Up to but not including| 1-1/2″| 2″| 2-1/2″| 3-1/4″| 3-1/2″| 4″| 4-1/2″| 5-1/2″| 6-1/2″

Anchor Detail

Nomenclature
da = Diameter of anchor
dbit = Diameter of drill bit
dh = Diameter of fixture clearance hole
hnom = Minimum embedment depth
h = base material thickness The minimum value of h should be 1.5hnom or 3″ whichever is greater
ho = Minimum hole depth

INSTALLATION INSTRUCTIONS

Step 1
Using the proper drill bit size, drill a hole into the base material to the required depth, ho, which is a 1/4-inch deeper than the minimumembedment depth, hnom. Step 2
remove dust and debris from the hole during drilling (e.g. dust extractor) or following drilling (e.g. suction, forced air) to extract loose particles created by drilling. Step 3
Attach a UltraCon+ installation socket tool for the selected anchor size to a percussion drill and set the drill to rotary only mode. Mount the screw anchor head into the socket. For flat head versions a bit tip must be used with the socket tool. Step 4
Place the point of the Crete-Flex through the fixture into the pre-drilled hole and drive the anchor in one steady continuous motion until it is fully seated at the proper embedment. The driver will automatically disengage from the head of the screw anchor.

PERFORMANCE DATA (ASD)

Ultimate Load Capacities for Crete-Flex in Normal-Weight Concrete 1,2

Nominal Anchor Diameter

|

Min. Embed. (in.)

|

Min.

Edge Dist. (in.)

|

Min. Spacing (in.)

| Minimum Concrete Compressive Strength
---|---|---|---|---
2,000 psi| 2,500 psi| 3,000 psi| 4,000 psi
Tension (lbs.)| Shear (lbs.)| Tension (lbs.)| Shear (lbs.)| Tension (lbs.)| Shear (lbs.)| Tension (lbs.)| Shear (lbs.)

3/16″

| 1-1/4|

2-1/2

|

3

| 850| 1,575| 900| 1,665| 940| 1,675| 980| 1,675
1-1/2| 1,200| 1,800| 1,265| 1,900| 1,325| 1,915| 1,380| 1,915
1-3/4| 1,360| 1,800| 1,435| 1,900| 1,505| 1,915| 1,565| 1,915

14

| 1| 1|

6

| 535| 445| 575| 480| 610| 500| 645| 500
1| 1-3/4| 585| 765| 630| 825| 670| 860| 710| 860
1| 2-1/2| 675| 945| 725| 1,015| 775| 1,060| 815| 1,060
1-3/4|

1

| 1-1/2| 1,115| –| 1,200| –| 1,280| –| 1,350| –
1-3/4| 3| 1,115| 635| 1,200| 680| 1,280| 710| 1,350| 710
1-3/4| 6| 1,115| 1,105| 1,200| 1,185| 1,280| 1,240| 1,350| 1,240
1-3/4| 1-3/4| 6| 1,165| 1,600| 1,250| 1,720| 1,330| 1,800| 1,405| 1,800
1-3/4| 2-1/2| 3| 1,115| 1,660| 1,200| 1,785| 1,280| 1,870| 1,350| 1,870
1-3/4| 6| 1,165| 2,295| 1,250| 2,470| 1,330| 2,580| 1,405| 2,580
2| 1|

6

| 1,390| 1,105| 1,495| 1,185| 1,590| 1,240| 1,675| 1,240
2| 1-3/4| 1,520| 1,600| 1,635| 1,720| 1,740| 1,800| 1,835| 1,800
2| 2-1/2| 1,520| 2,295| 1,635| 2,470| 1,740| 2,580| 1,835| 2,580
1.   Tabulated load values are for anchors installed in uncracked concrete. Concrete compressive strength must be at the specified minimum at the time of installation.
2.   Ultimate load capacities must be reduced by a minimum safety factor of 4.0 or greater to determine allowable working load. Consideration of safety factors of 10 and higher may be necessary depending upon the application such as life safety or overhead.

Allowable Load Capacities for Crete-Flex in Normal-Weight Concrete 1,2

Nominal Anchor Diameter

|

Min. Embed. (in.)

|

Min.
Edge Dist. (in.)

|

Min. Spacing (in.)

| Minimum Concrete Compressive Strength
---|---|---|---|---
2,000 psi| 2,500 psi| 3,000 psi| 4,000 psi
Tension (lbs.)| Shear (lbs.)| Tension (lbs.)| Shear (lbs.)| Tension (lbs.)| Shear (lbs.)| Tension (lbs.)| Shear (lbs.)

3/16″

| 1-1/4|

2-1/2

|

3

| 215| 395| 225| 415| 235| 420| 245| 420
1-1/2| 300| 450| 315| 475| 330| 480| 345| 480
1-3/4| 340| 450| 360| 475| 375| 480| 390| 480

14| 1| 1| 6| 135| 110| 145| 120| 155| 125| 160| 125

1| 1-3/4| 145| 190| 160| 205| 170| 215| 180| 215
1| 2-1/2| 170| 235| 180| 255| 195| 265| 205| 265
1-3/4|

1

| 1-1/2| 280| –| 300| –| 320| –| 340| –
1-3/4| 3| 280| 160| 300| 170| 320| 180| 340| 180
1-3/4| 6| 280| 275| 300| 295| 320| 310| 340| 310
1-3/4| 1-3/4| 6| 290| 400| 315| 430| 335| 450| 350| 450
1-3/4| 2-1/2| 3| 280| 415| 300| 445| 320| 470| 340| 470
1-3/4| 6| 290| 575| 315| 620| 335| 645| 350| 645
2| 1|

6

| 350| 275| 375| 295| 400| 310| 420| 310
2| 1-3/4| 380| 400| 410| 430| 435| 450| 460| 450
2| 2-1/2| 380| 575| 410| 620| 435| 645| 460| 645
1.   Tabulated load values are for anchors installed in uncracked concrete. Concrete compressive strength must be at the specified minimum at the time of installation.
2.   Allowable load capacities listed are calculated using an applied safety factor of 4.0. Consideration of safety factors of 10 or higher may be necessary depending on the application, such as life safety or overhead.

Ultimate and Allowable Load Capacities for Crete-Flex in Grouted and Hollow Concrete Masonry 1,2,3

Nominal Anchor Diameter

|

Min. Embed. (in.)

|

Min. Edge Dist. (in.)

|

Min. Spacing (in.)

| Ultimate Load| Allowable Load
---|---|---|---|---|---
Tension (lbs.)| Shear (lbs.)| Tension (lbs.)| Shear (lbs.)
3/16″| 1-1/4| 2-1/2| 3| 765| 1305| 155| 260

14

| 1-1/4| 1| 6| 780| 420| 155| 85
1-1/4| 1-3/4| 1,160| 1,320| 230| 265
1-1/4|

2-1/2

| 1-1/2| 505| 1,065| 100| 215
1-1/4| 3| 505| 1,235| 100| 245
1-1/4| 6| 1,220| 1,320| 245| 265
1-5/83| 1| 6| 1,240| 540| 250| 110
1.   Tabulated load values are for anchors installed in minimum 8″ wide, Type II, lightweight, medium-weight or normal-weight concrete masonry units conforming to ASTM C90. Mortar must be minimum Type N.
2.   Allowable load capacities listed are calculated using an applied safety factor of 5.0. Consideration of safety factors of 10 or higher may be necessary depending on the application, such as life safety or overhead.
3.   Tabulated load values for #14 screws with 1-5/8″ embedment are applicable to grouted concrete masonry only.

Average Withdrawal Capacity Crete-Flex in Wood 1,2

Nominal Anchor Diameter in.| Minimum Embedment in.| Minimum Edge Distance in.| Withdrawal Capacity lbs.
---|---|---|---

14| 1| 1-3/4| 260

1-1/2| 1-3/4| 735
1.   Ultimate load capacities are based on laboratory tests and must be reduced by a minimum safety factor of 3.0 or greater to determine allowable working load.
2.   Tests in Southern Yellow Pine (SYP) with minimum Specific Gravity of 0.55; screws oriented tangential to wood grain.

ORDERING INFORMATION

Crete-Flex

Cat. No.| ****

Screw Size

| Approximate Thread Length| ****

Pack Qty.

| ****

Carton Qty.

---|---|---|---|---
HFH| PFH| TFH|
–| DFM4EMF610| –| 3/16″ X 1-1/4″| 1″| 100| 500|
–| DFM4EMF620| –| 3/16″ X 1-3/4″| 1-1/2″| 100| 500|
–| DFM4EMF630| –| 3/16″ X 2-1/4″| 1-3/4″| 100| 500|
–| DFM4EMF640| –| 3/16″ X 2-3/4″| 1-3/4″| 100| 500|
–| DFM4EMF650| –| 3/16″ X 3-1/4″| 1-3/4″| 100| 500|
–| DFM4EMF690| –| #14 X 1-1/4″| 1″| 100| 500|
DFM4EMF340| DFM4EMF710| DFM4EMF510| #14 X 1-3/4″| 1-1/2″| 100| 500|
DFM4EMF360| DFM4EMF730| DFM4EMF530| #14 X 2-1/4″| 1-3/4″| 100| 500|
–| DFM4EMF750| DFM4EMF550| #14 X 2-3/4″| 1-3/4″| 100| 500|
–| DFM4EMF770| –| #14 X 3-1/4″| 1-3/4″| 100| 500|
–| DFM4EMF790| –| #14 X 3-3/4″| 1-3/4″| 100| 500|
–| DFM4EMF810| –| #14 X 4″| 1-3/4″| 100| 500|
–| DFM4EMF830| –| #14 X 5″| 1-3/4″| 100| 500|
–| DFM4EMF850| –| #14 X 6″| 1-3/4″| 100| 500|
HWH = Hex Washer Head, HFH = Hex Flange Head, PFH = Phillips Flat Head, TFH = TrimFit® Flat Head
– One straight shank drill bit included in each standard box.
– Hex Washer Head and Hex Flange Head Crete-Flex anchors are measured from below the washer. Phillips Flat Head and TrimFit Flat head CreteFlex anchors are measured end to end. To select the proper minimum anchor length, determine the embedment depth (e.g. required to obtain desired load capacity), then add the thickness of the fixture, including any spacers or shims, to the embedment depth.

Drill Bits

Installation Kit

bit, 1/4″ and 5/16″ nutsetters, #2 and #3 Phillips bits,
Phillipsflat head adapter, percussion adapter, drive sleeve and 1/8″ allen wrench

Rotary Hammers

L-Shape SDS Plus Rotary Hammer
DCH133| 20V Max* XR Brushless 1″
D-Handle SDS Plus Rotary Hammer

Accessories

Dust Extractors

Mechanical anchors
TECHNICAL GUIDE – MECHANICAL
ANCHors ©2022 DEWALT – rEV. b
www.dewalt.com

Documents / Resources

| DEWALT CRETE-FLEX 410 Stainless Steel Screw Anchor [pdf] Instruction Manual
CRETE-FLEX 410, CRETE-FLEX 410 Stainless Steel Screw Anchor, Stainless Steel Screw Anchor, Screw Anchor, Anchor
---|---

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>