ASTM A449 Hex Cap Screws

ASTM A449 Hex Cap Screws

Short Description:

ASTM A449 Hex Cap Screws Hex Bolts Standard: ASME B18.2.1 unless otherwise specified (Various types of configuration are also available) Thread Size: 1/4”-3” with various lengths Grade: ASTM A449 Type-1 Finish: Black Oxide, Zinc Plated, Dacromet, Hot Dip Galvanized, PTFE and so on Packing: Bulk about 25 kgs each carton, 36 cartons each pallet Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports Please feel free to contac...


  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Ningbo
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

    Product Tags

    Product Description

    ASTM A449 Hex Cap Screws Hex Bolts

    Standard: ASME B18.2.1 unless otherwise specified

    (Various types of configuration are also available)

    Thread Size: 1/4”-3” with various lengths

    Grade: ASTM A449 Type-1

    Finish: Black Oxide, Zinc Plated, Dacromet, Hot Dip Galvanized, PTFE and so on

    Packing: Bulk about 25 kgs each carton, 36 cartons each pallet

    Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports

    Please feel free to contact us for more details.

    Product Standards

    ASTM A449

    ASTM A449 covers headed bolts, rods, and anchor bolts in diameters ranging from 1/4″ through 3″ inclusive. It is a medium strength bolt manufactured from a medium carbon or alloy steel that develops its mechanical values through a heat treating process. It is intended for general engineering applications.

    ASTM A449 is virtually identical in chemistry and strength to ASTM A325 and SAE J429 grade 5. However, A449 is more flexible in the sense that it covers a larger diameter range and is not restricted by a specific configuration.

    A449 Types

    TYPE 1 Plain carbon steel, carbon boron steel, alloy steel, or alloy boron steel.
    TYPE 2 Withdrawn 2003
    TYPE 3 Weathering steel.

    A449 Mechanical Properties

    Size Tensile, ksi Yield, ksi Elong. %, min RA %, min
    1⁄4 - 1 120 min 92 min 14 35
    11⁄8 - 11⁄2 105 min 81 min 14 35
    15⁄8 - 3 90 min 58 min 14 35

    A449 Chemical Properties

    Type 1 Bolts
    Element Carbon Steel Carbon Boron Steel Alloy Steel Alloy Boron Steel
    Carbon 0.30 - 0.52% 0.30 - 0.52% 0.30 - 0.52% 0.30 - 0.52%
    Manganese, min 0.60% 0.60% 0.60% 0.60%
    Phosphorus, max 0.040% 0.040% 0.035% 0.035%
    Sulfur, max 0.050% 0.050% 0.040% 0.040%
    Silicon 0.15-0.30% 0.10 - 0.30% 0.15 - 0.35% 0.15 - 0.35%
    Boron   0.0005 - 0.003%   0.0005 - 0.003%
    Alloying Elements     * *
    * Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the maximum range given for the content of alloying elements exceeds one of more of the following limits: Manganese, 1.65%, silicon, 0.60%, copper, 0.60%, or in which a definite range or a minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99%, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium or any other alloying elements added to obtain a desired alloying effect.
    Type 3 Bolts, Class *
    Element A B C D E F
    Carbon 0.33 - 0.40% 0.38 - 0.48% 0.15 - 0.25% 0.15 - 0.25% 0.20 - 0.25% 0.20 - 0.25%
    Manganese 0.90 - 1.20% 0.70 - 0.90% 0.80 - 1.35% 0.40 - 1.20% 0.60 - 1.00% 0.90 - 1.20%
    Phosphorus 0.035% max 0.06 - 0.12% 0.035% max 0.035% max 0.035% 0.035%
    Sulfur, max 0.040% 0.040% 0.040% 0.040% 0.040% 0.040%
    Silicon 0.15 - 0.35% 0.30 - 0.50% 0.15 - 0.35% 0.25 - 0.50% 0.15 - 0.35% 0.15 - 0.35%
    Copper 0.25 - 0.45% 0.20 - 0.40% 0.20 - 0.50% 0.30 - 0.50% 0.30 - 0.60% 0.20 - 0.40%
    Nickel 0.25 - 0.45% 0.50 - 0.80% 0.25 - 0.50% 0.50 - 0.80% 0.30 - 0.60% 0.20 - 0.40%
    Chromium 0.45 - 0.65% 0.50 - 0.75% 0.30 - 0.50% 0.50 - 1.00% 0.60 - 0.90% 0.45 - 0.65%
    Vanadium     0.020% min      
    Molybdenum   0.06% max   0.10% max    
    Titanium       0.05% max    
    * Selection of a class shall be at the option of the manufacturer

    A449 Recommended Hardware

    Nuts Washers
    Plain Galvanized
    1/4 - 1-1/2 1-5/8 - 3 1/4 - 3
    A563B Hex A563A Heavy Hex A563DH Heavy Hex F436
    Note: Nuts of other grades having proof load stresses greater than the specified grade are suitable. The ASTM A563 Nut Compatibility Chart has a complete list of specifications.

    Product Certificates

    1
    2
    3
    4
    A325M Test Report
    A563M 10S Test Report

    About us

    Testing Lab

    1. Strength Testing Facility
    2. Impact Testing Facility
    3. Hardness Testing Facility
    5. Metallographic Analysis Facility

    Workshop

    1 Annealing Furnace
    2 Cold Forging Line
    3 Hot Forging Line
    4 Heat Treatment line
    5 Heat Treatment Line
    6 Thread Rolling  Line
    7 Thread Rolling  Line
    8 Thread Rolling  Line
    9 CNC Lathe Workshop
    10 CNC Machining Center

    Warehouse

    3 Carton and Pallet
    5 Threaded Rod Packing
    2 Metal Keg and Pallet
    6 Threaded Rod Packing
    4 Threaded Rod Packing
    1 Stock Shelf

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