Structural Fastener – Line ASTM A307

Hex Structural Fasteners – Line ASTM A307 – Degree A

Fasteners used in secondary connections and recommended to be used in structures not subject to impact and vibrations. Manufactured in low carbon steel and without thermal treatment. The bolts, also known as common bolts, have as the main application’s light structures and similar applications, in which the strengths are static and relatively low. They can also be used in temporary connections. The nuts compatible with this fastener are specified according to the standard ASTM A563 Degree A, and the plain washers, Narrow Type A.

Request a budget

Benefits

Reliability for the mechanical properties, standardized product

Products identified with standardized marking

Higher reliability compared to the welded junctions, as they have a known resistance

It does not require welding in many situations

Possibility of disassembling and reassembling

Applications

Conventional roofing structures (sheds, gantries, arches, fink, etc.)

Spatial roofing structures (mesh in tubular and laminated profiles)

Industrial and commercial sheds

Metallic structure buildings

Mezzanines and platforms

Pipe-rack

Wheel track and overhead cranes

Runways and bridges

Small lattices, guardrail, bracing profiles, platforms, purlins, side rails and small scissors

Commercial Data
Technical Data
How to Use
Downloads

HEX NUT ASTM A563 DEGREE A

DIAMETER	THREAD (F.P.P)	WRENCH	PACKAGE (PIECE)
3/8”	16 UNC	9/16”	500
1/2”	13 UNC	3/4”	200
5/8”	11 UNC	15/16”	100
3/4”	10 UNC	1.1/8”	50

FLAT WASHER NARROW 1

DIAMETER	PACKAGE (PIECE)
3/8”	500
1/2”	300
5/8”	150
3/4”	100

HEX BOLT ASTM A307 DEGREE A

DIAMETER	3/8”		1/2”		5/8”		3/4”
THREAD (F.P.P)	16 UNC		13 UNC		11 UNC		10 UNC
WRENCH	9/16”		3/4”		15/16”		1.1/8”
MINIMUM THREAD LENGTH	1”		1.1/4”		1.1/2”		1.3/4”
TOTAL LENGTH	TYPE OF THREAD	PACK. (Piece)	TYPE OF THREAD	PACK. (Piece)	TYPE OF THREAD	PACK. (Piece)	TYPE OF THREAD	PACK. (Piece)
1”	TOTAL	1000	TOTAL	500	–	–	–	–
1.1/4”	TOTAL	1000	TOTAL	500	–	–	–	–
1.1/2”	PARTIAL	1000	TOTAL	500	TOTAL	300	–	–
1.3/4”	PARTIAL	800	TOTAL	400	TOTAL	250	–	–
2”	PARTIAL	800	PARTIAL	400	TOTAL	250	TOTAL	150
2.1/4”	PARTIAL	500	PARTIAL	300	PARTIAL	200	TOTAL	150
2.1/2”	PARTIAL	500	PARTIAL	300	PARTIAL	200	TOTAL	100
2.3/4”	–	–	PARTIAL	300	PARTIAL	200	PARTIAL	100
3”	–	–	PARTIAL	250	PARTIAL	150	PARTIAL	100

*All the items are supplied with hot-galvanized coating, in the quantities informed in the tables as units.

COMPOSITION:

Material: Low carbon steel with quenched tempering

FINISHING	LAYER THICKNESS	RESISTANCE TO CORROSION
FINISHING	LAYER THICKNESS	SALT-SPRAY¹	KESTERNICH²
HOT GALVANIZED	50 MICRONS	N/A³	N/A³
WHITE GALVANIZED	5 MICRONS	48 HOURS	N/A³

1 – Standards ASTM B117, ABNT NBR 8094 and DIN 50021 (red corrosion).
2 – Standard DIN 50018 (allowing 15% of red corrosion in the bolt head).
3 – Test not applicable.

As the common bolts used in secondary connections, they are assembled without specifications for assembling torque and do not require special care.

Page Line ASTM A307 Structural Fasteners Folder