What is astm A394?

What is astm A394?

ASTM A394 is a standard material specification covering chemical and mechanical requirements of hexagon and square-head zinc-coated steel bolts and atmospheric corrosion-resistant bolts, in nominal thread diameters of 1⁄2, 5⁄8, 3⁄4, 7⁄8 and 1 in.

What is Grade A307?

ASTM A307 Grade A is grade specification in carbon steel bolting for use in general purpose application. This grade covers hex headed bolts, stud bolts, threaded rods or any other bolting having a minimum tensile strength of 60 ksi.

What strength is a Grade 5 bolt?

120,000
Bolt Grade Markings and Strength Chart

What is the difference between shop bolts and field bolts?

Shop bolts are used to sub-assemble steel structures at the shop, whereas field bolts are shipped out to the field in containers (or whatever packaging) and are used to assemble steel structures at the job site by construction crews.

What is ASTM A563 Grade A?

ASTM A563 is a standard material specification for carbon and alloy steel nuts general structural and mechanical uses on bolts, studs, and other externally threaded fasteners.

What does 307 A on a bolt mean?

307A bolts are a Grade 1 equivalent that is used in low-strength application. It has lower hardness and tensile requirement than grade 2 bolts. It is generally used in low-pressure, standard or normal temperature applications and is made of low carbon steel.

Are A307 bolts high strength?

ASTM A307 bolts are not assigned to a group since they are not considered to be high strength bolts. The ultimate tensile strengths for A325 and A490 bolts are 120 ksi and 150 ksi respectively. We will also be obtaining bolt strength information for use in the AISC equations from SCM Table J3.

What is stronger grade 5 or 8 bolt?

Grade 8 bolts have been hardened more than grade 5 bolts. Thus they are stronger and are used in demanding applications such as automotive suspensions. Grade 8 bolts have 6 evenly spaced radial lines on the head. Grade G is roughly equivalent to Grade 8.

Is Grade 8 or 12.9 stronger?

Special markings on screw heads and nuts identify the fastener’s grade. Replace a graded fastener with same or higher grade (don’t replace a Grade 8 fastener with a Grade 5 or 2)….Table 1.

Is a bolt or weld stronger?

Welded joints are normally stronger than bolted joints, in great part because their material does not have the perforations needed for bolted joints. The manufacturing process is the determining factor when it comes to joint strength: bolted joints offer simplicity, but welded joints provide higher strength.

When the bolts are stronger than the plate tension?

The tensile stress in the plate at the net cross-section may exceed the working tensile stress. Tearing failure occurs when bolts are stronger than the plates. Bolts may have been placed at a lesser edge distance than required causing the plates to splitor shear out.

What grade is a A563 nut?

ASTM A563

What are the dimensions of ASTM A394 steel bolts?

ASTM A394 is a standard material specification covering chemical and mechanical requirements of hexagon and square-head zinc-coated steel bolts and atmospheric corrosion-resistant bolts, in nominal thread diameters of 1⁄2, 5⁄8, 3⁄4, 7⁄8 and 1 in. for use in the construction of transmission towers, substations, and similar steel structures.

What kind of washer to use with ASTM A394 tower bolts?

Recommended Washers for ASTM A394 TOWER BOLTS Suitable washers for use with Type 0 are hot-dip zinc-coated carbon-steel washers with dimensions that are in accordance with Specification F436. Suitable washers for use with Type 1 bolts are hot-dip zinc-coated Type 1 hardened-steel washers that are in accordance with Specification F436.

What kind of nuts do I need for an ASTM A394 hook screw?

Recommended Nuts for ASTM A394 TOWER BOLTS Unless otherwise specified, all nuts on these bolts shall be hex style and conform to the requirements of Specification A 563 as follows. Bolt Type Nut Grade Finish