ad fasterner logo
  • Mobile NO: +91 98336 40613
  • Send Your Mail At: sales@adfastcomponents.com
Facebook Twitter Youtube Instagram
Calculator
Menu

ASTM F3043

ASTM F3043 tension Control Bolt Specification

Quenched & Tempered Alloy Steel Twist Off Type Tension Control Bolts Nuts & Washers

  • “We Also Provide other product"
Explore

Overview

High-Strength ASTM F3043 Tension Control Bolt Assemblies

Adfast Component LTD proudly offers premium ASTM F3043 tension control bolt-nut-washer assemblies. These heat-treated, alloy steel assemblies provide a tensile strength range of 200 to 215 ksi, ensuring optimal performance in structural connections. Designed with precision, these assemblies include a tension control bolt with a spline end, a nut, and a washer, enabling easy installation using a spline drive tool. Available in round head sizes from 1 inch to 1 1/4 inch, they guarantee a secure and reliable structural bond.

Versatile Applications for Structural Connections

Our ASTM F3043 fastener assemblies are ideal for use in various environments. They perform exceptionally in interiors that are normally dry, including embedded structural steel in concrete or masonry. Additionally, they are suited for interiors and exteriors under roofed environments where coatings are applied to protect the structural steel system. Adfast ensures high-quality solutions for your structural need.

Chemical Composition

ElementHeat Analysis, %Product Analysis, %
minmaxminmax
C0.380.420.360.44
Mn0.400.600.370.63
P. . .0.01. . .0.015
S. . .0.01. . .0.015
Si. . .0.10. . .0.12
Cr1.201.401.151.45
Mo0.600.800.570.83
V0.300.400.270.43
  • (A) Aluminum, cobalt, niobium / columbium, nickel, titanium, tungsten, zirconium, or any other alloying elements may be added to obtain the desired alloying effect.
ElementHeat Analysis, %Product Analysis, %
minmaxminmax
C0.300.480.280.50
Mn0.600.900.570.93
Si0.150.350.130.37
P. . .0.050. . .0.055
S. . .0.050. . .0.055
ElementHeat Analysis, %Product Analysis, %
minmaxminmax
C0.420.480.400.50
Mn0.600.900.570.93
Si0.150.350.130.37
P. . .0.030. . .0.035
S. . .0.030. . .0.035

Mechanical Requirements

Bolt Size, in.Bolt Length, in.Rockwell C
minmax
1 to 11/4 , inclall3845
GradeBolt Size, Threads per in.Stress Area, in.2 A,BTensile Load, lbfC
minmax
ASTM A3043 Grade 11 in. – 80.615123 100132 300
11/8 in. – 70.776155 200166 800
11/4 in. – 70.983196 700211 400
ASTM A3043 Grade 21 in. – 80.640128 000137 700
11/8 in. – 70.808161 600173 600
11/4 in. – 71.019203 800219 100
  • (A) The stress area for Grade 1 is calculated as:
  • As = 0.7854 [0.5 (d3 max + d2 max)]2
  • (B) The stress area for Grade 2 is calculated in accordance with Annex A1.
  • (C) Loads tabulated are based on the following:
  • Bolt Size, in. = 1 to 11/4
  • Tensile Load min = 200 000 psi
  • Tensile Load min = 215 000 psi
Nominal Bolt Diameter, in.Tensile Strength, ksiYield Strength (0.2 % offset), min, ksiElongation in 2 in. or 50 mm, min, %Reduction of Area, min, %
minmax
1 to 11/4 , incl2002151801440
Bolt Size, in.Surface Hardness, Rockwell C
minmax
1 to 11/4 , incl3040
GradeNominal Size – Threads per in.Stress Area, As, in.2 A,BProof Load Stress, ksiNut Proof Load, lbfC
ASTM A3043 Grade 11 in. – 80.615200123 100
11/8 in. – 70.776200155 200
11/4 in. – 70.983200196 700
ASTM A3043 Grade 21 in. – 80.640200128 000
11/8 in. – 70.808200161 600
11/4 in. – 71.019200203 800
  • (A) The stress area for Grade 1 is calculated as:
  • As = 0.7854 [0.5 (d3 max + d2 max)]2
  • (B) The stress area for Grade 2 is calculated in accordance with Annex A1.
  • (C) To determine nut proof load in pounds, multiply the appropriate nut proof load stress by the tensile stress area of the thread.
Rockwell C
Min 40Max 45
Bolt Size, in.Grade 1Grade 2
Manufacturers Acceptance Test Tension, lbs, minATension lbs, min (for information only)BManufacturers Acceptance Test Tension, lbs, minATension lbs, min (for information only)B
190 00086 00094 00090 000
11/8114 000109 000119 000113 000
11/4145 000138 000150 000143 000
  • (A) The manufacturer’s acceptance test tension values are 5 % higher than the tension in Column 2 and are rounded to the nearest 1000 lbs (kip).
  • (B) The values in Column 2 are equal to 70 % of the specified minimum tensile strength for tests of full size F3043 bolts tested in axial tension and are rounded to the nearest 1000 lbs (kip).
ParametersRangeSize
Nominal Size…111/811/4
Basic Diameter, E, in.A…1.0001.1251.250
Full-Size Body Diameter E, in.max1.0221.1491.277
min0.9761.0981.223
Head Height, H, in.Bnom39/6411/1625/32
max0.6430.7380.824
min0.6070.6780.759
Head Diameter, D, in.Cnom21/823/821/2
max2.1582.3752.589
Bearing Diameter, C, in.Dnom221/421/2
min1.7711.9912.224
Radius of Fillet, R, in.nom3/323/327/64
max0.1100.1100.138
min0.0870.0870.098
Transition Body Diameter, ER, in.nom59/6411/3215/32
max0.9331.0461.171
min0.9171.0301.155
Body Transition Length, Y2, in.nom0.3050.3540.354
max0.3940.4500.450
min0.2070.2440.244
Reduced Body Length, LR, in.nom1/29/169/16
max0.6250.7150.715
min0.3750.4290.429
Transition Thread Length Y1, in.ERef0.310.340.34
Thread Length, LT, in.FRef2.0492.3222.322
Maximum center of groove to First Fully Formed Thread, U, in.GMax0.4550.5000.500
Spline Length, Ls, in.HRef0.800.900.984
Spline Width Across Flats, S, in.HRef0.7000.7870.897
  • (A) Where specifying nominal size in decimals, zeros preceding the decimal shall be used and the fourth decimal place shall be omitted.
  • (B) The head height shall be that overall distance measured parallel to the axis of the product from the top of the head to the bearing surface and shall include the thickness of the washer face. Raised grade and manufacturer’s identification are excluded from head height.
  • (C) The circumference may be irregular with a rounded or flat edge.
  • (D) The bearing surface shall be flat and perpendicular to the body within the FIM limits specified for total runout. Measurement of FIM shall extend as close to the periphery of the bearing surface as possible while the bolt is being held in a collet or other gripping device at a distance of one bolt diameter from the underside of the head. A die seam across the bearing surface is not permissible.
  • (E) Transition thread length, Y1, is a reference dimension, intended for calculation purposes only, that represents the length of incomplete threads and tolerance on grip gaging length.
  • (F) See ASME B18.2.6, section.
  • (G) Unless otherwise specified, bolts need not be pointed. The distance, U, is from the center of the groove to the first fully formed thread crest. This shall be determined by measuring how far the point enters into a cylindrical NOT GO major diameter ring gage.
  • (H) The spline dimensions and groove dimensions are reference dimensions and shall be at the discretion of the manufacturer. Users should consult with the supplier to assure wrenchability.
ParametersRangeSize
Nominal SizeA. . .111/811/4
. . .1.0001.1251.250
Width Across Flats, FBnom15/8113/162
max1.6251.8122.000
min1.5751.7561.938
Width Across Corners, GCmax1.8762.0932.309
min1.7962.0022.209
Thickness, HDnom13/16111/32115/32
max1.2141.3671.501
min1.1471.2951.424
Washer Face Heightnom1/641/641/64
Total Runout of Bearing Face FIME0.0240.0270.030
  • (A) Where specifying nominal size in decimals, zeros preceding the decimal shall be used and the fourth decimal place shall be omitted.
  • (B) The width across flats of heavy hex nuts shall be the overall distance measured, perpendicular to the axis of the nut, between two opposite sides of the nut. No transverse section through the nut between 25% and 75% of the actual nut thickness, as measured from the bearing surface, shall be less than the minimum width across flats.
  • (C) A rounding or lack of fill at junction of hex comers with chamfer shall be permissible, provided the width across comers is within specified limits at and beyond a distance equal to 17.5% of the basic thread diameter from the chamfered faces.
  • (D) The nut thickness shall be the overall distance measured parallel to the axis of the nut, from the top of the nut to the bearing surface, and shall include the thickness of the washer face where provided.
  • (E) Nuts shall have a washer faced bearing surface and chamfered top. The diameter of washer face shall be within the limits of the maximum width across flats and 95% of the minimum width across flats.
ParametersRangeSize
Nominal Size. . .111/811/4
Inside Diameter (ID), in.nom11/1613/1613/8
max1.0851.2511.438
min1.0631.1881.375
Outside Diameter (OD), in.nom221/421/2
max2.0632.3132.563
min1.9372.1872.437
Thickness (T), in.nom1/41/45/16
max0.2640.2640.343
min0.2090.2090.287
ParametersSize
Nominal Size, in.111/811/4
Major Diameter, in.0.99801.12281.2478
Threads per inch877
Pitch, in.0.12500.14290.1429
A, in.0.01350.01550.0155
B, in.0.04600.05260.0526
C, in.0.01060.01210.0121
D, in.0.03810.04350.0435
E, in.0.01670.01900.0190
F, in.0.02810.03210.0321
G, in.0.01800.02060.0206
H, in.0.10830.12370.1237
J, in.0.07220.08250.0825
M, in.0.00540.00620.0062
Q, in.0.11040.12610.1261
  • As = (π /4)[(d2 + d3)/2]2
    • where:
    • As = tensile stress area, in.2
    • dbsc = basic major diameter, in.
    • n = threads per in.
    • H = (√3 / 2) * dbsc/n
    • d2 = dbsc – (3/4 H)
    • d1 = d2 – 2(H / 20)
    • θ = sin-1 (2√3 / 15)
    • z = (H / 6) (cos θ)
    • x′ = (H / 6) (sin 30°)
    • y = (H / 2) (cos θ)
    • z′ = (2H / 3) – y – z
    • d3 = d1 – 2 (z – x′ + z′)
Bolt Size, in.Pretension, pounds, min
Grade 1Grade 2
190 00094 000
11/8114 000119 000
11/4145 000150 000

Bolting Components Marking

Product Shall be Marked with our manufacturing trade mark Adfast Component LTD along with the designated Grade.
Grade and manufacturer’s identification symbols shall be applied to one end of studs and to the heads of bolts and screws of all sizes. (If the available area is inadequate, the grade symbol may be marked on one end and the manufacturer’s identification symbol marked on the other end.) For bolts and screws smaller than 1⁄4 in. [6 mm] in diameter and studs smaller than 3⁄8 in. [10 mm] in diameter and for 1⁄4 in. [6 mm] in diameter studs requiring more than a total of three symbols, the marking shall be a matter of agreement between the purchaser and the manufacturer.

Dimensional Standards

B18.2.6 Tension control bolts with Round Head
B18.2.6– Heavy Hex Nuts Washer Faced

Certification

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103

Testing Standards

  • A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
  • E709 Guide for Magnetic Particle Testing
  • F606/F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
  • F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
  • E1444/E1444M Practice for Magnetic Particle Testing
  • F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
  • F2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered, Threaded, Steel Bolts, Screws, Studs, and Nuts

Threading Specs

  • ASME B1.1 Unified Inch Screw Threads (UN and UNR Thread Form)
  • ASME B1.3 Screw Thread Gaging System for Dimensional Acceptability - Inch Screw Threads (IN, UNR, and UNJ)