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Heavy Hex Structural A325 A490 Bolts A563 Nuts

Model No.︰	A325 A490 Bolts
Brand Name︰	Heavy Hex Structural A325 A490 Bolts A563 Nuts
Country of Origin︰	India
Unit Price︰	-
Minimum Order︰	-

Total 300 Related Items

Product Description

Heavy Hex Structural A325 A490 Bolts A563 Nuts

We are Stockholder & Distributors of Heavy Hex Structural Bolts, Heavy Hex Structural Nuts according to standard ASTM A325, ASTM A325M, ASTM A490, ASTM A490M, ASTM A563, ASTM A563M, ASTM A194, ASTM A194M, ASTM A449, ASTM A449M from size : 1/2" to 1.1/2" & M16 to M36

Heavy Hex Structural Bolts ASTM A325, ASTM A325M

Heavy Hex Bolts ASTM A325, ASTM A325M for Structure

Heavy Hex Heat Treated Bolts ASTM A325, ASTM A325M

Heavy Hex Metric Structural Bolts ASTM A325, ASTM A325M

Heavy Quenched & Tempered Bolts ASTM A325, ASTM A325M

ASTM A325 Type-1 Heavy Hex Structural Bolts Heat-Treated

ASTM A325M Type-1 Heavy Hex Structural Bolts Heat-Treated

ASTM A325 Type-3 Heavy Hex Structural Bolts Heat-Treated

ASTM A325M Type-3 Heavy Hex Structural Bolts Heat-Treated

ASTM A325 / A325M Zinc Plated, Glavanized, HDG, Phosphate Coating Bolts

ASTM A325 / A325M Hot-Dip Galvanized Hex Bolts for Structure

ASTM A490 Type-1 Heavy Hex Structural Bolts Heat-Treated

ASTM A490M Type-1 Heavy Hex Structural Bolts Heat-Treated

ASTM A490 Type-3 Heavy Hex Structural Bolts Heat-Treated

ASTM A490M Type-3 Heavy Hex Structural Bolts Heat-Treated

ASTM A490 / A490M Zinc Plated, Glavanized, HDG, Phosphate Coating Bolts

ASTM A490 / A490M Hot-Dip Galvanized Hex Bolts for Structure

ASTM A449 Type-1 Bolts, Hex Cap Screws, Studs

ASTM A449M Type-1 Bolts, Hex Cap Screws, Studs

ASTM A449 Type-3 Bolts, Hex Cap Screws, Studs

ASTM A449M Type-3 Bolts, Hex Cap Screws, Studs

ASTM A449 / A449M Zinc Plated, Glavanized, HDG, Phosphate Coating Bolts

ASTM A449 / A449M Hot-Dip Galvanized Hex Bolts for Structure

Heavy Hex Structural Nuts ASTM A563, ASTM A563M

Heavy Hex Nuts ASTM A563, ASTM A563M for Structure

Heavy Hex Heat Treated Nuts ASTM A563, ASTM A563M

Heavy Hex Metric Structural Nuts ASTM A563, ASTM A563M

Heavy Quenched & Tempered Nuts ASTM A563, ASTM A563M

ASTM A563 / A563M Zinc Plated, Glavanized, HDG, Phosphate Coating Nuts

ASTM A563 / A563M Hot-Dip Galvanized Hex Nuts for Structure

ASTM A563 Grade C, Grade C3 Heavy Hex Type Structural Nuts

ASTM A563 Grade DH, Grade DH3 Heavy Hex Type Structural Nuts

Heavy Hex Structural Nuts ASTM A194, ASTM A194M

Heavy Hex Nuts ASTM A194, ASTM A194M

Heavy Hex Heat Treated Nuts ASTM A194, ASTM A194M

Heavy Hex Metric Structural Nuts ASTM A194, ASTM A194M

Heavy Quenched & Tempered Nuts ASTM A194, ASTM A194M

ASTM A194 / A194M Zinc Plated, Glavanized, HDG, Phosphate Coating Nuts

ASTM A194 / A194M Hot-Dip Galvanized Hex Nuts for Structure

ASTM A194 Grade 2H, Grade 2HM Heavy Hex Type Structural Nuts

ASTM A194 Grade 4, Grade 7 Heavy Hex Type Structural Nuts

ASTM A325 bolts are supplied as plain or galvanized (mechanical or hot dipped). We offer A325 bolts as Type 1, Type 3 (weathering steel), or A325T (thread-to-head, in lengths up to four times diameter, and 105 ksi over 1". The Type 1 bolts are made as medium steel with sufficient harden ability to obtain the required properties. The Type 3 bolts are made from composition "A" from Table 2 in the ASTM A325 specification (medium carbon steel with Copper, Nickel, and Chromium additions for weathering purposes). Dimensions are a specified for Heavy Hex Structural Bolts in ANSI/ASME B18.2.6 and threads are UNC (Unified Coarse) per ANSI/ASME B1.1.

A325M METRIC STRUCTURAL BOLTS

ASTM A325M bolts are supplied as plain or galvanized (mechanical or hot dipped). The chemical and mechanical properties are given in ASTM F568 ("Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners"). The ASTM A325M bolt is equivalent to the properties of an ASTM F568 class 8.8 bolt. These properties are essentially identical to class 8.8 in ISO 898/I. Surface discontinuity limits are specified in ASTM F788/F788M. The ASTM A325M bolts are produced to the dimensions for heavy hex structural bolts as specified in ANSI B18.2.3.7M. The threads are rolled as specified in ANSI B1.13M, to a metric coarse thread with grade 6g tolerance.

A490 STRUCTURAL BOLTS

ASTM A490 bolts are supplied as plain (black) only. These bolts are heat treated to a tensile strength range of greater than 150 ksi. Medium carbon, alloy steel is used for these bolts. Dimensions are as specified for Heavy Hex Structural Bolts in ANS/ASME B1.1.

Structural bolts are designed to be used with nuts for the connection of structural members. The head of a heavy hex structural bolt is specified to be the same size as a heavy hex nut of the same nominal diameter, thus allowing a single size wrench or socket to be used on the bolt head and the nut. Structural bolts also have a shorter thread length so that the threads can be eliminated from the shear planes of the connection.

There are two primary ways in which structural bolts are used; Slip-Critical Connections and Snug Tightened. The AISC (American Institute of Steel Construction) publishes the "Specification of Structural Joints using ASTM A325 or A490 Bolts", which describes tightening methods for joints using structural bolts. In many cases (e.g., bearing connections, and bolts not in slip-critical connections or subject to tension loads), bolts can be used in the snug-tight condition. Snug tight is defined as the tightness that exists when all plies of a joint are in firm contact. It can normally be attained with a few impacts of an impact wrench or the full effort of a man using an ordinary spud wrench.

If full pretensioning is required, such as in slip-critical connections, then a load equal to 70% of the minimum tensile strength is referenced. Slip-critical connections, formerly know as friction-type connections, rely on the friction between the steel plies being clamped together and the high clamp load of the structural bolt/nut to prevent any movement (or slip) of the joint. To accomplish this high level of friction, the structural bots must be fully tensioned to the following minimum clamp loads;

The AISC gives four appropriate methods to fully tension bolts for slip-critical connections. They include the "turn-of-the-nut" method (where you turn the nut through a certain number of degrees to elongate the bolt). The first edition of the AISC manual (1951) had a torque/tension table; however, the table was withdrawn in 1954 due to recognition of the tremendous variation that was found (+/-40%). "Standard" torque/tension relationships determined from tables or formulas are no longer recognized as appropriate means to control pretension. Calibrated wrench tightening may be used provided that the installation procedures are calibrated daily (for each bolt diameter, length, grade, and surface condition). The torque value is best obtained by using a calibrated torque wrench (or transducer) and a Skidmor-Wilhelm type load indicating device to equate torque to tension. The calibrated torque wrench method should be considered as the least favorable of the four tightening options.

Heavy Hex Structural Nuts are manufactured to ASTM A563, ASTM A563M and ASTM A194 specifications and are designed to be stronger than the bolts with which they are assembled.Therefore, a higher strength nut typically may be substituted in the application and should always possess the same finish as the bolt. Never compromise your assembly with an inferior nut.

Grade C and C3 Nuts
The Grade C Heavy Hex Structural Nut is recommended for plain (non-galvanized) ASTM A325 High Strength Structural Bolts. A Grade C Nut is not sufficient for galvanized A325 Bolts since the overtapping of the nut threads required to accommodate the thickness of the zinc coating also reduces the strength of the nut. Grade C Nuts are made out of carbon steel and generally achieve their mechanical properties without heat treatment. The Grade C3 Nuts are made with weathering steel (alloy steel with additions of copper, nickel and chromium) to match up with ASTM A325 Type 3 Bolts.

Grade DH and DH3 Nuts
The Grade DH Heavy Hex Structural Nut is recommended for ASTM A490 Structural Bolts (150,000 psi minimum tensile strength structural bolts and for galvanized ASTM A325 Bolts). Galvanized DH Nuts are lubricated to minimize galling as a requirement of ASTM/AASHTO specifications. A colored dye is included in the lubricant as a requirement to enable visual confirmation of the presence of a lubricant. The green color of Nucor Fastener’s Hot Dip Galvanized nuts distinguishes them from our blue colored Mechanical Galvanized nuts to help prevent mixing. There shall be no mixed coating types on structural bolt/nut combinations per the specifications. Grade DH Nuts are made from medium carbon steel and must be quenched and temper heat treated. Grade DH3 Nuts are made from weathering steel (alloy steel with additions of copper, nickel and chromium), are also heat treated and are designed for use with ASTM A325 Type 3, F1852 Type 3, A490 Type 3 and F2280 Type 3 products

2H Nuts
The ASTM A194 Grade 2H Heavy Hex Nut is designed to be used with bolts in high-pressure and high-temperature service in a plain finish. The ASTM A194 specification is under the jurisdiction of ASTM Committee A-1 (Subcommittee on Valves, Fittings, Bolting, and Flanges for High and Sub-atmospheric Temperatures), as opposed to ASTM A563, which is under the jurisdiction of the ASTM Committee F-16 (Fasteners). The ASTM A194 specification was not meant for normal structural bolting; however, the 2H Nut Heavy Hex Nut is considered a suitable substitute for a Grade DH Nut. If galvanized, an asterisk is required to be present after the grade symbol to signify that the nut has been tapped oversize, so the nut will not be mistakenly placed in a high-pressure, high-temperature application. Nucor recommends the use of Grade DH Nuts any time a galvanized finish is specified.

Metric Class 10S Nuts
The ASTM A563M Class 10S Heavy Hex Nut is recommended for zinc-coated ASTM A325M high strength structural bolts and ASTM A490M bolts. While the Class 8S Nut is recommended for plain A325M Bolts, the Class 10S Nut can be substituted with the approval of the customer and can also be used with A490M bolts. Class 10S Nut mechanical properties are similar to an ASTM A563 Grade DH Nut, are made from medium carbon steel and are quenched and temper heat treated.

Inspection & Approval Certificates : C/W Certificate (Calibration Works Certificate) EN 10204 3.1 / DIN 50049 3.1 / ISO 10474 3.1 Mill Test Certificate, NACE MR-0103 / NACE MR-0175 / ISO 15156, CE Marked, European Pressure Equipment Directive PED-97/23/EC, AD-2000-WO, ASME Boiler & Pressure Vessel Code Sec.II Part A Ed. 2008, API 6A (American Petroleum Institute), with 3.2 certificate duly Certified & Approved by LRS (Lloyd's Register), GL (Germanischer Lloyd), BV (Bureau Veritas), DNV (Det Norske Veritas), ABS (American Bureau of Shipping), SGS, TUV, RINA, IRS, NORSOK Approved Standard M-630, M-650 Rev.3

If you have any requirement of above items, please feel free to contact us

Regards,

CONTACT PERSON :

MUKESH SHAH
Director
Mobile No. 0091 - 9820292499
Email - marketing@rolexmetals.com

ROLEX METAL DISTRIBUTORS
( A METAL & STEEL Company )
57-A, KHATARGALLI,
THAKURDWAR,
MUMBAI - 400002, INDIA.
TEL.No. 0091-22-23858802
TEL.No. 0091-22-23823963
FAX No. 0091-22-23898724
Email - marketing@rolexmetals.com
Website – www.rolexmetals.com