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Large Diameter Tapcon (LDT)
Selection and Ordering Information
Product Information : Suggested Specifications : Installation Instructions
Performance Data : Approvals and Listings
SELECTION CHART

LDT™
Carbon and Stainless Steel
with Zinc Plating

Carbon Steel with Zinc Plating: Meets ASTM B695 & B633 specifications for zinc plating of 5um = .0002" thickness. This coating is well suited for non-corrosive interior environments.

Carbon Steel with EnvireX Coating: Provides additional corrosion protection for outdoor applications.

ldt_selec1a.jpg (7338 bytes)

 

 PART
NUMBER FOR
CARBON STEEL ZINC PLATED		 PART
NUMBER FOR
CARBON STEEL
ENVIREX
COATING		 PART
NUMBER
FOR 410
STAINLESS STEEL		 ANCHOR
DIA.
In. (mm)		 DRILL BIT
DIA.
In. (mm)		 EFFECTIVE
LENGTH
In. (mm)
(see detail on left)		 MAX. THICKNESS
OF MATERIALS
TO BE FASTENED
In. (mm)		 QTY/WT
PER BOX
lbs.		 QTY/WT
PER MASTER
CARTON
lbs.
LDT-3816 —— SLDT-3816 3/8 (9.5) 5/16 (7.9) 1-3/4
(44.5)		 1/4 (6.4) 50/ 3.0 400/ 24.0
LDT-3824 —— SLDT-3824 3/8 (9.5) 5/16 (7.9) 2-1/2
(63.5)		 1 (25.4) 50/ 4.5 400/ 34.0
LDT-3830 LDT-3830X SLDT-3830 3/8 (9.5) 5/16 (7.9) 3
(76.2) 		1-1/2 (38.1) 50/ 5.0 400/ 40.0
LDT-3840 LDT-3840X SLDT-3840 3/8 (9.5) 5/16 (7.9) 4
(101.6)		 2-1/2 (63.5) 50/ 6.5 400/ 52.0
LDT-3850 LDT-3850X
SLDT-3850
3/8 (9.5) 5/16 (7.9) 5
(127.0) 		3-1/2 (89.0) 40/ 7.5 320/ 60.0
LDT-1230 LDT-1230X SLDT-1230 1/2 (12.7) 7/16 (11.1) 3
(76.2) 		1 (25.4) 25/ 4.5 150/ 27.0
LDT-1240 LDT-1240X SLDT-1240 1/2 (12.7) 7/16 (11.1) 4
(101.6)		 2 (50.8) 25/ 6.0 150/ 36.6
LDT-1250 LDT-1250X SLDT-1250 1/2 (12.7) 7/16 (11.1) 5
(127.0)		 3 (76.2) 25/ 7.6 150/ 45.6
LDT-1260 —— —— 1/2 (12.7) 7/16 (11.1) 6
(152.4) 		4 (101.6) 20/ 9.0 120/ 54.0
LDT-5830 —— —— 5/8 (15.9) 1/2 (12.7) 3
(76.2)		 1/4 (6.4) 10 / 3.5 100 / 35.0
LDT-5840 —— —— 5/8 (15.9) 1/2 (12.7) 4
(101.6)		 1-1/4 (31.8) 10 / 4.0 100 / 40.0
LDT-5850 —— —— 5/8 (15.9) 1/2 (12.7 ) 5
(127.0)		 2-1/4 (57.1) 10 / 4.7 100 / 47.0
LDT-5860 —— —— 5/8 (15.9) 1/2 (12.7) 6
(152.4)		 3-1/4 (82.6) 10 / 5.4 50 / 27.0
LDT-3444 —— —— 3/4 (19.1) 5/8 (15.9) 4-1/2 (114.3) 1-1/4 (31.8) 10 / 7.4 50 / 37.0
LDT-3454 —— —— 3/4 (19.1) 5/8 (15.9) 5-1/2 (139.7) 2-1/4 (57.1) 10 / 8.1 50 / 40.5
LDT-3462 —— —— 3/4 (19.1) 5/8 (15.9) 6-1/4 (158.8) 3 (76.2) 10 / 9.1 30 / 27.3

* The stainless steel LDT’s will be gold in color in order to differentiate them from the carbon steel anchors which are silver.

DESIGN GUIDE
For proper selection of anchor diameters based upon predrilled holes through base plates and fixtures to be fastened.
HOLE DIAMETER
THROUGH FIXTURE
In. (mm)
SUGGESTED
LDT DIAMETER
In. (mm)
7/16 (11.1)
3/8 (9.5)
1/2 (12.7)
3/8 (9.5)
9/16 (14.3)
1/2 (12.7)
5/8 (15.9)
1/2 (12.7)
3/4 (19.1)
5/8 (15.9)
7/8 (22.2)
3/4 (19.1)

 

 
LENGTH INDICATION CODE*

 

 

 

 CODE LENGTH OF ANCHOR    In. (mm)
A 1-1/2 < 2  (38.1 < 50.8)
B 2 < 2-1/2  (50.8 < 63.5)
C 2-1/2 < 3  (63.5 < 76.2)
D 3 < 3-1/2   (76.2 < 88.9)
E 3-1/2< 4  (88.9 < 101.6)
F 4 < 4-1/2  (101.6 < 114.3)
G 4-1/2 < 5    (114.3 < 127.0)
H 5 < 5-1/2   (127.0 < 139.7)
I 5-1/2 < 6 (139.7 < 152.4)
J 6 < 6-1/2 (152.4 < 165.1)
*Located on top of anchor for easy inspection.
 

Large Diameter Tapcon (LDT)
Selection and Ordering Information
Product Information : Suggested Specifications : Installation Instructions
Performance Data : Approvals and Listings
ITW Red Head • 2171 Executive Drive • Addison, IL 60101 • 630-350-0370
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