What are the different bolting methods?

Nut Turning: Turn the nut or bolt of a fastener assembly at a particular angle based on the length and diameter of the fastener, while ensuring that the surface does not rotate. Calibrated Wrench: Apply an average torque value based on daily testing of your representative fastener assembly samples. They are based on the exact configuration of power supplies & tools under conditions as close together as possible, within one day or less.

What is ASTM A325 standard?

The American Society for Testing and Materials (ASTM) is in charge of establishing standards for various tools and industries. Although these standards are voluntary, most fabricators follow them as it increases customer trust. The A325 standard, in addition to ASTM A563 and A194, applies to heavy hex structural bolts. This standard specifies the mechanical properties of bolts with diameters ranging from.5 to 1.5 inches. A325M, the equivalent metric standard, defines mechanical properties for bolts having M12 to M36 sizes. The ASTM A325 designation was replaced in 2016 by ASTM F3125. However, the markings on bolt heads remain the same to avoid confusion.

Structural Bolts

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Structural bolts are heavy hex bolts constructed of medium carbon steel. They have a flat bearing surface, washer face and chamfered point. They are commonly used in heavy-duty structural steel joints.

GRAINGER -

Structural Bolt Carbon Steel M20 x 2.5, 150mm Length, 25PK

Model	Item	Price (inc. GST)
M04210.200.0150	AH7TGJ	SGD 529.57

GRAINGER -

Structural Bolt Carbon Steel M20 x 2.5, 140mm Length, 25PK

Model	Item	Price (inc. GST)
M04210.200.0140	AH7TGH	SGD 839.85

GRAINGER -

Structural Bolt Carbon Steel M20 x 2.5, 130mm Length, 25PK

Model	Item	Price (inc. GST)
M04210.200.0130	AH7TGG	SGD 731.75

GRAINGER -

Structural Bolt Carbon Steel M20 x 2.5, 120mm Length, 25PK

Model	Item	Price (inc. GST)
M04210.200.0120	AH7TGF	SGD 453.87

GRAINGER -

Structural Bolt Carbon Steel M20 x 2.5, 110mm Length, 25PK

Model	Item	Price (inc. GST)
M04210.200.0110	AH7TGE	SGD 416.87

GRAINGER -

Structural Bolt Carbon Steel M24 X 130, 20PK

Model	Item	Price (inc. GST)
M04005.240.0130	AH7TDW	SGD 561.54

GRAINGER -

Structural Bolt Carbon Steel M24 X 110, 25PK

Model	Item	Price (inc. GST)
M04005.240.0110	AH7TDU	SGD 734.71

APPROVED VENDOR -

Structural Bolt 1-1/4-7 X 4-1/4" Length, 5PK

Model	Item	Price (inc. GST)
U04210.125.0425	AB3HGD	SGD 140.51

GRAINGER -

Structural Bolt 1 1/8-7 X 3 1/2, 5PK

Model	Item	Price (inc. GST)
U04008.112.0350	AH3EEM	SGD 116.05

GRAINGER -

Structural Bolt Carbon Steel M12 X 35, 100PK

Model	Item	Price (inc. GST)
M04005.120.0035	AH7TCE	SGD 541.61

GRAINGER -

Structural Bolt 1/2-13 4 Length, 25PK

Model	Item	Price (inc. GST)
U04211.050.0400	AH3EFA	SGD 39.80

GRAINGER -

Structural Bolt 1/2-13 X 3 1/2L, 25PK

Model	Item	Price (inc. GST)
U04211.050.0350	AH3EEZ	SGD 36.24

GRAINGER -

Structural Bolt 1/2-13 X 3 1/4 Length, 25PK

Model	Item	Price (inc. GST)
U04211.050.0325	AH3EEY	SGD 34.81

GRAINGER -

Structural Bolt 1/2-13 X 2 1/2L, 25PK

Model	Item	Price (inc. GST)
U04211.050.0250	AH3EEX	SGD 43.48

GRAINGER -

Structural Bolt 1/2-13 X 1 3/4 Length, 25PK

Model	Item	Price (inc. GST)
U04211.050.0175	AH3EEW	SGD 88.67

GRAINGER -

Structural Bolt 3/4-10 6 Inch Length, 10PK

Model	Item	Price (inc. GST)
U04210.075.0600	AH3EEV	SGD 151.62

GRAINGER -

Structural Bolt 3/4-10 5 1/2 Length, 10PK

Model	Item	Price (inc. GST)
U04210.075.0550	AH3EEU	SGD 38.66

GRAINGER -

Structural Bolt 3/4-10 4 Inch Length, 10PK

Model	Item	Price (inc. GST)
U04210.075.0400	AH3EET	SGD 116.62

GRAINGER -

Structural Bolt 3/4-10 3 Inch Length, 10PK

Model	Item	Price (inc. GST)
U04210.075.0300	AH3EER	SGD 97.49

GRAINGER -

Structural Bolt 3/4-10 2 1/2 Length, 10PK

Model	Item	Price (inc. GST)
U04210.075.0250	AH3EEQ	SGD 87.09

GRAINGER -

Structural Bolt 3/4-10 2 1/4 Length, 10PK

Model	Item	Price (inc. GST)
U04210.075.0225	AH3EEP	SGD 80.21

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