ASTM A320 L7M All Threaded Stud Bolts

ASTM A320 L7M All Threaded Stud Bolts

Short Description:

ASTM A320/A320M L7M All Threaded Stud Bolts Standard: IFI-136, ASME B16.5, DIN976 Inch Size: 1/4”-2.1/2” with various lengths Metric Size: M6-M64 with various lengths Other Available Grade: ASTM A193/A193M B7, B7M, B16 B8 Class 1 & 2, B8M Class 1 & 2, ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on. Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc. Packing: Bulk about 25 kgs each carton, 36 cartons each pallet Advan...


  • 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 A320/A320M L7M All Threaded Stud Bolts

    Standard: IFI-136, ASME B16.5, DIN976

    Inch Size: 1/4”-2.1/2” with various lengths

    Metric Size: M6-M64 with various lengths

    Other Available Grade:

    ASTM A193/A193M B7, B7M, B16 B8 Class 1 & 2, B8M Class 1 & 2,

    ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on.

    Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc.

    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 A320

    Scope
    Originally approved in 1948, the ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Like the ASTM A193 specification, unless otherwise specified, the 8UN thread series is specified on fastener larger than 1” in diameter.
    Below is a basic summary of a few of the common grades within the ASTM A320 specification. A number of other less common grades of ASTM A320 exist, but not covered in the description below.
    Grades
    L7 Alloy steel
    AISI 4140/4142 Quenched and tempered
    L43 Alloy steel
    AISI 4340 Quenched and tempered
    B8 Class 1 Stainless steel
    AISI 304, carbide solution treated
    B8M Class 1 Stainless steel
    AISI 316, carbide solution treated
    B8 Class 2 Stainless steel
    AISI 304, carbide solution treated, strain hardened
    B8M Class 2 Stainless steel
    AISI 316, carbide solution treated, strain hardened
    Mechanical Properties
    Grade
    Size
    Tensile, ksi, min
    Yield, ksi, min
    Charpy Impact
    20-ft-lbf @ temp
    Elong, %, min
    RA, %, min
    L7
    Up to 21/2
    125
    105
    -150° F
    16
    50
    L43
    Up to 4
    125
    105
    -150° F
    16
    50
    B8
    Class 1
    All
    75
    30
    N/A
    30
    50
    B8M
    Class 1
    All
    75
    30
    N/A
    30
    50
    B8
    Class 2
    Up to 3/4
    125
    100
    N/A
    12
    35
    7/8 - 1
    115
    80
    N/A
    15
    35
    11/8 - 11/4
    105
    65
    N/A
    20
    35
    13/8 - 11/2
    100
    50
    N/A
    28
    45
    B8M
    Class 2
    Up to 3/4
    110
    95
    N/A
    15
    45
    7/8 - 1
    100
    80
    N/A
    20
    45
    11/8 - 11/4
    95
    65
    N/A
    25
    45
    13/8 - 11/2
    90
    50
    N/A
    30
    45
    Recommended Nuts and Washers
    Grade
    Nuts
    Washers
    L7
    A194 Grade 4 or 7
    F436
    L43
    A194 Grade 4 or 7
    F436
    B8 Class 1
    A194 Grade 8
    SS304
    B8M Class 1
    A194 Grade 8M
    SS316
    B8 Class 2
    A194 Grade 8, strain hardened
    SS304
    B8M Class 2
    A194 Grade 8M, strain hardened
    SS316

    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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