Technical Specification - Royal Anchors

Technical Specification

Bolt Specifications

ASTM F1554 Anchor bolt designed to anchor structural supports to concrete foundations

F1554 Grades

F1554 Grade 36

Low
carbon, 36 ksi yield steel anchor bolts

F1554
Grade 55

High
strength, low alloys, 55 ksi yield steel anchor bolts

F1554
Grade 105

Alloy,
heat treated, high strength 105 ksi yield steel anchor bolts

F1554 Mechanical Properties

Grade	Marking	Size, inches	Tensile, ksi	Yield, ksi min	Yield, MPa min	Elong % min	RA % min
36		½ – 4	58 – 60	36	248	23	40
55		½ – 2	75 – 95	55	380	21	30
		2 ¼ – 2 ½	75 – 95	55	380	21	30
		2 ¾ – 3	75 – 95	55	380	21	30
		3 ¼ – 4	75 – 95	55	380	21	30
105		½ – 3	½ – 3	105	724	15	45

F1554 Mechanical Properties

Element	Grade 36			Grade 55 and 105
Element	Sizes up to ¾	Sizes over ¾ to 1 – ½	Sizes over 1 – ½ to 4	Grade 55 and 105
Carbon (max)	0.26%	0.27%	0.28%
Manganese		0.60 – 0.90%	0.60 – 0.90%
Phosphorus, max	0.04%	0.04%	0.04%	0.0040%
Sulfur, max	0.05%	0.05%	0.05%	0.050%
Copper, min (when specified)	0.20%	0.20%	0.20%	0.20%

Nut Specifications

ASTM A194 Carbon and alloy steel nuts for high pressure and high temperature service

A194 Mechanical Properties

Grade Identification Marking	Specifications	Material	Normal Size. In	Tempering Temp F	Proof Load Stress, ksi	Hardness Rockwell		See Note
Grade Identification Marking	Specifications	Material	Normal Size. In	Tempering Temp F	Proof Load Stress, ksi	Min	Max	See Note
	ASTM A194 Grade 2	Medium Carbon Steel	¼ -4	0	150	159	352	1, 2, 3
	ASTM A194 Grade 2H	Medium Carbon Steel, Quenched and Tempered	¼ - 4	850	175	C24	C38	1, 2

ASTM A563 Standard specification for carbon and alloy steel nuts

A563 Mechanical Properties

Grade	Style	Size, in.	Proof Load, ksi		Hardness, HBN
			Plain	Galvanized
A	Hex	¼ - 1 – ½	90	68	116 - 302
	Heavy Hex	¼ - 4	100	75	116 - 302

A563 Grade Identification Markings

Element	Grades O, A, B, C	D**	DH**
Carbon	0.55% max	0.55% max	0.20 – 0.55%
Manganese, min		0.30%	0.60%
Phosphorus, max	0.12%	0.04%	0.04%
Sulfur, max	0.15%	0.05%	0.05%

A563 Grade Identification Markings

Grade Identification Marking		Material	Nominal Size. In	Proof Load Stress, ksi	Hardness Rockwell		See Note
					Min	Max
	ASTM A563 Grade O	Carbon Steel	¼ - 1 – ½	69	B55	C32	2, 3
	ASTM A563 Grade A	Carbon Steel	¼ - 1 – ½	90	B68	C32	2, 3
	ASTM A563 Grade B	Carbon Steel	¼ - 1	120	B69	C32	2, 3
			>1 – 1 – ½	105

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