Tension controlled screw A325

SKU: TOTCA325

Tension controlled screw A325

Tension-controlled ASTM A325 structural bolts of different diameters and lengths for use in structural connections. This type of bolt should be factory assembled with a DH nut and an F436 washer.
$35.28$267.80
Tipo

Tension-controlled screw

Grado

ASTM-A325

Material

Medium carbon steel

Dimensiones

ASME B18.6.3

Acabado

Pavonado

Cabeza

Dome

Cuerda

UNC Standard

Diámetro

5/8, 3/4, 7/8, 1, 1 1/8

Largo

1 1/2, 1 3/4, 2, 2 1/4, 2 1/2, 2 3/4, 3, 3 1/4, 3 1/2, 3 3/4, 4, 4 1/4, 4 1/2, 4 3/4, 5, 5 1/4, 5 1/2, 5 3/4, 6

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A325 Controlled Tension Screws or A325 TC Screws are the best choice in high strength structural fasteners and formally recognized by the RCSC (Research Council on Structural Connections) as an approved installation method. A325 tension controlled bolts come in a set with a 2H heavy nut and an ASTM 1852-00 standard F-436 flat washer. Tension-controlled screws come with a built-in tension control device (tip) to achieve the best tension levels and to be able to repeat this tension on every installation of every screw. They are installed with a specialized electric gun that has an external die that turns the nut, while holding the slot with the internal die. When the proper tension level is reached, the slot breaks and gives you a visual indication of proper installation. These guns are special and we are one of the few distributors in Latin America.

SCREW Tension Controlled A325 STRUCTURAL (ASTM A325)

Dimensions Tension-controlled screw A325
Diameter Body diameter (E) Diameter of bearing surface (D) Height (H) Fillet radius (R) Thread length (LT) Transition thread length (Y)
Max Min Max Min Basic Max Min Max Min Basic Max Ref
5/8 0.642 0.605 1.181 1.102 25/64 0.403 0.378 0.062 0.021 1.25 0.22
¾ 0.768 0.729 1.417 1.338 15/32 0.483 0.455 0.062 0.021 1.38 0.25
7/8 0.895 0.852 1.654 1.535 35/64 0.563 0.531 0.062 0.031 1.50 0.28
1 1.022 0.976 1.900 1.771 39/64 0.627 0.591 0.093 0.062 1.75 0.31
Dimensions Nut 2H
Diameter Width between faces (G) Width between corners (H) Height (H)
Basic Max Min Max Min Basic Max Min
5/8 1 1/16 1.062 1.031 1.227 1.175 39/64 0.631 0.587
3/4 1 1/41 1.250 1.212 1.443 1.382 47/64 0.758 0.710
7/8 1 7/16 1.438 1.394 1.660 1.589 55/64 0.885 0.833
1 1 5/8 1.625 1.576 1.876 1.796 63/64 1.012 0.956
Sizes F436 washer leg screws tension controlled
Diameter Outside diameter (D) Inside diameter (DH) Thickness (T)
Nom. Tolerances Nom Tolerances Max Min
5/8 1 5/16 -1/32, + 1/4 11/16 -0, + 1/32 0.177 0.122
3/4 1 15/32 -1/32, + 1/4 13/16 -0, + 1/32 0.177 0.122
7/8 1 ¾ -1/32, + 1/4 15/16 -0, + 1/32 0.177 0.136
1 2 -1/32, + 1/4 1 1/8 -0, + 1/32 0.177 0.136
Descriptions A three-piece fastening system consisting of: 1) a round-headed screw with a truncated, flat surface and a 24-sided point at the end of the thread. The tip is calibrated to release once the desired tension is reached; 2) One DH Nut and 3) one structural flat washer.
Applications Commonly used in structural steel joints in heavy construction. It has several advantages over traditional structural bolts such as: A) No operator or tool may overtighten the fastener, B) the fixation can be visually inspected: when the tip is missing, the tension is correct, C) installation is faster, easier and performed by one person, D) the installation process is quieter.
Screw Nut Rondana
Material Type 1 bolts must be made of carbon steel, which conforms to the following requirements Chemical composition requirements: Carbon: 0.25-0.58%, manganese: 0.60 % min; phosphorus: 0.048 % max; sulfur: 0.058 % max. DH nuts must be made of carbon steel, which meets the following requirements Chemical composition requirements: Carbon: 0.40% min, Manganese: 1.00%. max., Phosphorus: 0.040 % max., Sulfur: 0.050 % max., Silicon: 0.040 % max. Type 1 washers should be made of steel, which complies with the following chemical composition requirements: Phosphorus: 0.050 % max, Sulfur: 0.060 % max.
Heat treatment Type 1 fasteners shall be heat treated by quenching in a liquid medium above the austenitizing temperature and then tempered by reheating to a temperature of at least 800 degrees (F). DH nuts must be heat treated to meet the required mechanical properties. The washers must be fully hardened.
Hardness 5/8" - 1" - Rockwell C24-35 Rockwell C24-38 Rockwell C3845
Burden of proof 5/8" - 1" - 85,000 psi 175,000 psi
Performance Strength 5/8" - 1" - 92,000 psi
Reduction of the area 5/8" - 1" -120,000 psi min
Tipo

Tension-controlled screw

Grado

ASTM-A325

Material

Medium carbon steel

Dimensiones

ASME B18.6.3

Acabado

Pavonado

Cabeza

Dome

Cuerda

UNC Standard

Diámetro

5/8, 3/4, 7/8, 1, 1 1/8

Largo

1 1/2, 1 3/4, 2, 2 1/4, 2 1/2, 2 3/4, 3, 3 1/4, 3 1/2, 3 3/4, 4, 4 1/4, 4 1/2, 4 3/4, 5, 5 1/4, 5 1/2, 5 3/4, 6