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ASTM F2882 / F2882M Alloy Steel Bolting Specification

Quenched & Tempered Alloy Steel Bolts & Screws

ASTM F2882 / F2882M Hex Bolts, Heavy Hex Bolts, Studs, Socket Head Cap Screws, Threaded Rods

ASTM F2882 / F2882M specification covers the requirements for quenched and tempered alloy steel screws 0.060 through 11/2 in. and 1.6 through 48 mm in diameter having a minimum ultimate tensile strength of 170 KSI or 1170 MPa. The screws shall be fabricated from steel made to fine grain practice and shall have an austenitic grain size of 5 or finer. In the event of controversy over grain size, referee tests on finished screws conducted in accordance with Test Methods E112 shall prevail.

Related Specifications of ASTM F2882/F2882M Bolting

A193 A320 A194 F436B564 F3042

ASTM F2882/F2882M Chemical Composition

Elements Grade Designation 4037 4042 4137 4140 4142 4145 4340 8740 5137M 51B37M
UNS Number G40370 G40420 G41370 G41400 G41420 G41450 G43400 G87400 . . . . . .
Carbon Heat  Analysis 0.35-0.40 0.40-0.45 0.35-0.40 0.38-0.43 0.40-0.45 0.43-0.48 0.38-0.43 0.38-0.43 0.35-0.40 0.33-0.40
Product  Analysis 0.33-0.42 0.38-0.47 0.33-0.42 0.36-0.45 0.38-0.47 0.41-0.50 0.36-0.45 0.36-0.45 0.33-0.42 0.31-0.42
Manganese Heat  Analysis 0.70-0.90 0.70-0.90 0.70-0.90 0.75-1.00 0.75-1.00 0.75-1.00 0.60-0.80 0.75-1.00 0.30-0.50 0.30-0.50
Product  Analysis 0.67-0.93 0.67-0.93 0.67-0.93 0.71-1.04 0.71-1.04 0.71-1.04 0.57-0.83 0.71-1.04 0.27-0.53 0.27-0.53
Phosphorus, max Heat  Analysis 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035
Product  Analysis 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040
Sulfur, max Heat  Analysis 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040
Product  Analysis 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045
Silicon Heat  Analysis 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35
Product  Analysis 0.13-0.37 0.13-0.37 0.13-0.37 0.13-0.37 0.13-0.37 0.13-0.37 0.13-0.37 0.13-0.37 0.13-0.37 0.13-0.37
Nickel Heat  Analysis A A A A A A 1.65-2.00 0.40-0.70 A A
Product  Analysis . . . . . . . . . . . . . . . . . . 1.65-2.05 0.37-0.73 . . . . . .
Chromium Heat  Analysis A A 0.80-1.10 0.80-1.10 0.80-1.10 0.80-1.10 0.70-0.90 0.40-0.60 0.90-1.20 0.95-1.25
Product  Analysis . . . . . . 0.75-1.15 0.75-1.15 0.75-1.15 0.75-1.15 0.67-0.93 0.37-0.63 0.85-1.25 0.90-1.30
Molybdenum Heat  Analysis 0.20-0.30 0.20-0.30 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.20-0.30 0.20-0.30 A A
Product  Analysis 0.18-0.32 0.18-0.32 0.13-0.27 0.13-0.27 0.13-0.27 0.13-0.27 0.18-0.32 0.18-0.32 . . . . . .
Boron Heat  Analysis A A A A A A A A A 0.0005-0.003
Product  Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . B
  • (A) Elements shown with an "A" are not applicable to that grade designation.
  • (B) Boron is not subject to product analysis.

ASTM F2882/F2882M Chemical Requirements

Element
Heat Analysis Product Analysis
C 0.33 to 0.48 0.31 to 0.50
Mn, max 1.25 1.25
P, max 0.035 0.040
S, max 0.040 0.045

ASTM F2882/F2882M Mechanical Requirements

Product Mechanical Requirements Grade 170 Property Class 11.9
Full-size screws Tensile or wedge strength, min, 170 KSIA 1170 MPa
Proof load (stress), min, 135 KSI 930 MPa
Machined test specimen Yield strength at 0.2 % offset, min, 153 KSI 1055 MPa
Tensile strength, min, KSI 170 KSI 1170 MPa
Elongation in 5D, min, % 10 10
Reduction of area, min, % 35 35
Product hardness Rockwell 37 to 42 HRC 37 to 42 HRC
Vickers 372 to 434 DPH 372 to 434 DPH
  • (A) Not applicable to fasteners with reduced loadability due to head configuration such as flat countersunk or button head screws. See Table 4 or Table 5 for full-size tensile requirements.

ASTM F2882/F2882M Mechanical Testing Requirements

Item Nom. Dia. Product Length Hardness, max Hardness, min Test Conducted Using Full Size Product Test Conducted Using Machined Test Specimen
Proof Load Wedge Tensile Strength Axial Tensile Strength Yield Strength at 0.2% Offset Tensile Strength Elongation % Red. of Area
1 All short lengths Less than 3DA B B ... ... ... ... ... ... ...
2 ≤1.0 in. or M24 Over 3DA B ... ZC B ... ... ... ... ...
3 >1.0 in. or M24 and ≤ M36 Over 3DA B ... ZC XC ... YC YC YC YC
4 > M36 Over 3DA B ... ZC ... XC YC YC YC YC
5D ... Over 3DA B ... ... ... XC ... ... ... ...
  • (A) D denotes nominal diameter of product.
  • (B) B Denotes mandatory test.
  • (C) C Either all tests denoted by X or all tests denoted by Y shall be performed. In case of arbitration full-size tests, denoted X, shall be decisive. Proof load test denoted Z shall be conducted when purchaser requests the test in inquiry and order.
  • (D) Item 5 would include socket set screws and screws with reduced loadability due to head configuration such as flat countersunk or button head screws.

ASTM F2882/F2882M Tensile Requirements for Coarse Thread Screws (Inch Series)

Screw Dia (D), in. Threads, in. Tensile Load, min, lbf Stress Area, in.2A Proof Load (Length Measurement Method), min, lbf Button and Countersunk Heads, Tensile Load, min lbfB
0.073 64 447 0.00263 355 358
0.086 56 629 0.00370 500 503
0.099 48 828 0.00487 657 662
0.112 40 1 029 0.00604 815 821
0.125 40 1 351 0.00796 1,075 1 083
0.138 32 1 549 0.00909 1,227 1 236
0.164 32 2 380 0.0140 1 890 1 904
0.190 24 2 975 0.0175 2 363 2 380
0.250 20 5 412 0.0318 4 293 4 330
0.3125 18 8 916 0.0524 7 074 7 130
0.375 16 13 128 0.0775 10 463 10 540
0.4375 14 18 039 0.1063 14 351 14 430
0.500 13 24 083 0.1419 19 157 19 270
0.625 11 38 400 0.226 30 500 30 720
0.750 10 56 800 0.334 45 100 45 440
0.875 9 78 500 0.462 62 400 62 800
1.000 8 103 000 0.606 81 800 82 400
1.125 7 129 000 0.763 103 000 103 200
1.250 7 165 000 0.969 131 000 132 000
1.375 6 196 000 1.155 156 000 156 800
1.500 6 239 000 1.405 190 000 191 200
  • (A) Stress areas based on Handbook H-28 (U.S. Department of Commerce) as follows:  
  • As = 0.7854[D - (0.9743/n)]2
  • where:
  • As = stress area,
  • D = nominal screw size, and
  • n = threads/in.
  • (B) Because of the reduced loadability due to the head critical configuration of these parts, the full size tensile loads are based on 80% of the minimum heat treated material strength (170 KSI) and the stress areas.

ASTM F2882/F2882M Tensile Requirements for Fine Thread Screws (Inch Series)

Screw Dia (D), in. Threads, in. Tensile Load, min, lbf Stress Area, in.2A Proof Load (Length Measurement Method), min, lbf Button and Countersunk Heads, Tensile Load, min lbfB
0.060 80 306 0.00180 243 245
0.073 72 472 0.00278 375 378
0.086 64 670 0.00394 532 536
0.099 56 889 0.00523 706 711
0.112 48 1124 0.00661 892 899
0.125 44 1407 0.00830 1 119 1129
0.138 40 1728 0.01015 1 369 1380
0.164 36 2503 0.01474 1 986 2005
0.190 32 3400 0.0200 2 700 2720
0.250 28 6139 0.0364 4 918 4950
0.3125 24 9822 0.0580 7 830 7888
0.375 24 14922 0.0878 11 861 11 941
0.4375 20 20211 0.1187 16 007 16 841
0.500 20 27200 0.1599 21 600 21 746
0.625 18 43 500 0.256 34 600 34 800
0.750 16 63 400 0.373 50 400 50 730
0.875 14 86 500 0.509 68 700 69 200
1.000 12 113 000 0.663 89 500 90 200
1.125 12 146 000 0.856 116 000 116 400
1.250 12 182 000 1.073 145 000 145 900
1.375 12 224 000 1.315 178 000 178 840
1.500 12 269 000 1.581 213 000 215 000
  • (A) Stress areas based on Handbook H-28 (U.S. Department of Commerce) as follows:  
  • As = 0.7854[D - (0.9743/n)]2
  • where:
  • As = stress area,
  • D = nominal screw size, and
  • n = threads/in.
  • (B) Because of the reduced loadability due to the head critical configuration of these parts, the full size tensile loads are based on 80% of the minimum heat treated material strength (170 KSI) and the stress areas.

ASTM F2882/F2882M Tensile Requirements (Metric Screws)

Thread Size Stress Area, mm2 Tensile Load, min, kN Proof Load, kN
M1.6 × 0.35 1.27 1.46 1.19
M2 × 0.4 2.07 2.39 1.94
M2.5 × 0.45 3.39 3.91 3.09
M3 × 0.5 5.03 5.80 4.71
M4 × 0.7 8.78 10.1 8.22
M5 × 0.8 14.2 16.3 13.3
M6 × 1 20.1 23.1 18.8
M8 × 1.25 36.6 42.1 34.2
M10 × 1.5 58.0 66.9 54.3
M12 × 1.75 84.3 97 78.9
M14 × 2 115 132 108
M16 × 2 157 181 147
M20 × 2.5 245 282 230
M24 × 3 353 407 330
M30 × 3.5 561 646 525
M36 × 4 817 942 764
M42 × 4.5 1120 1290 1050
M48 × 5 1470 1690 1380

ASTM F2882/F2882M Wedge Test Angles

Screw Dia (D), in. and mm Wedge Angle, Deg
Body Lengths 2D or Less or Threaded to the Head Body Lengths Greater than 2D
0.112 - 0.500 in. or up through 12 mm, inclusive 6 10
0.625 - 0.750 in. or 13-16 mm , inclusive 6 8
0.875 - 1.500 in. or 20-36 mm, inclusive 4 6

ASTM F2882/F2882M Bolting Surface Treatment Specifications

ASTM F2882/F2882M Bolting Components Marking

Product Shall be Marked with our manufacturing trade mark "TorqBolt" or "TB" 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.

ASME Dimensional Standards

B18.2.1 Imperial Square and Hex Bolts and Screws
B18.3 Socket Cap, Shoulder, and Set Screws, Hex and Spline Keys (Inch Series)
B18.2.3.3M Metric Heavy Hex Screws
B18.2.3.4M Metric Hex Flange Screws
B18.2.3.5M Metric Hex Bolts
B18.2.3.9M Metric Heavy Hex Hex Flange Screws
B18.2.5 12 Point Flange Screws
B18.2.5M Metric 12 Point Flange Screws
B18.2.7.1M Metric 12 Spline Flange Screws
B18.3.1M Socket Head Cap Screws (Metric Series)

ASTM F2882/F2882M Bolting Certifications

  • 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

ASTM F2882/F2882M Testing Standards

E18 Test Methods for Rockwell Hardness of Metallic Materials
E21 Test Methods for Elevated Temperature Tension Tests of Metallic Materials
E112 Test Methods for Determining Average Grain Size
E139 Test Methods for Conducting Creep, Creep-Rupture,and Stress-Rupture Tests of Metallic Materials
E150 Recommended Practice for Conducting Creep and Creep-Rupture Tension Tests of Metallic Materials Under Conditions of Rapid Heating and Short Times
E151 Recommended Practice for Tension Tests of Metallic Materials at Elevated Temperatures with Rapid Heating and Conventional or Rapid Strain Rates
E292 Test Methods for Conducting Time-for-Rupture Notch Tension Tests of Materials
E328 Test Methods for Stress Relaxation for Materials and Structures
E566 Practice for Electromagnetic (Eddy Current) Sorting of Ferrous Metals
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
F1940 Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
A962/A962M Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
A788/A788M for Steel Forgings, General Requirements

ASME Threading Specifications

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)
ASME B1.13M Metric Screw Threads- M Profile
ASME B1.21M Metric Screw Threads - MJ Profile
ASME B1.2 Gauges & gauging for Unified Screw Threads(Imperial)

ASTM F2882/F2882M Supplementary Requirements

S1 Specific Grade Chemical Compositions