A563 Carbon Steel Nuts

A563 Carbon Steel Nuts

Specification

      ASTM A563 is the standard specification for carbon and alloy steel nuts of various grades in sizes from 1/4 inch to 4 inches for general structural and mechanical applications on bolts, studs and other externally threaded components. A563 nuts from Glaser and Associates are available in seven grades, A, B, C, C3, D, DH and DH3, offering different mechanical and chemical properties for specific applications. ASTM A563 also covers the American Association State Highway and Transportation Officials Standard AASHTO M-291.

These nuts are designed, manufactured and tested to comply with the standards set by ASTM A563 for hardness, proof load and chemical and mechanical properties.

Process flow

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ tapping ➨make heat treatment(if need) ➨ Finish ➨ Packing

Hot forging

Cutting material ➨ hot forging ➨ turning ➨ tapping ➨ make heat treatment(if need) ➨ Finish ➨ Packing

Product Grade

A563 Grade A A563 Grade B A563 Grade C A563 Grade D

A563 Grade DH A563 Grade C3 A563 Grade DH3

A563 Grades

Materials and Chemical compstition

1008

1035

10B21

1045

40CR

35CRMO

42CRMO

A563 Mechanical Properties

A563 Chemical Properties

A563 Grade Identification Markings

Grade Identification Marking	Specification	Material	Nominal Size, In.	Proof Load Stress, ksi	Hardness Rockwell		See Note
					Min	Max
	ASTM A563 Grade O	Carbon Steel	1/4 - 1-1/2	69	B55	C32	2,3
	ASTM A563 Grade A	Carbon Steel	1/4 - 1-1/2	90	B68	C32	2,3
	ASTM A563 Grade B	Carbon Steel	1/4 - 1	120	B69	C32	2,3
			>1 - 1-1/2	105
	ASTM A563 Grade C	Carbon Steel, may be Quenched and Tempered	1/4 - 4	144	B78	C38	4
	ASTM A563 Grade C3	Atmospheric Corrosion Resistant Steel, may be Quenched and Tempered	1/4 - 4	144	B78	38	4,6
	ASTM A563 Grade D	Carbon Steel, may be Quenched and Tempered	1/4 - 4	150	B84	C38	5
	ASTM A563 Grade DH	Carbon Steel, Quenched and Tempered	1/4 - 4	175	C24	C38	5
	ASTM A563 Grade DH3	Atmospheric Corrosion Resistant Steel, Quenched and Tempered	1/4 - 4	175	C24	C38	4,6

NOTES:

1. In addition to the indicated grade marking, all grades, except A563 grades O, A, and B, must be marked for manufacturer identification.
2. Nuts are not required to be marked unless specified by the purchaser. When marked, the identification marking shall be the grade letter O, A, or B.
3. Properties shown are those of nonplated or noncoated coarse thread nuts.
4. Properties shown are those of coarse thread heavy hex nuts.
5. Properties shown are those of coarse thread heavy hex nuts. Other nuts styles and fine threads may apply.
6. The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel.

Finish

Hot Dip Galvanized Mechanical Galvanized
Zinc Plated Cadmium Plated
Yellow Zinc Plated Yellow Cadmium Plated
Blue Xylan® or Blue Teflon® Green Xylan® or Green Teflon®
Black Oxide Plain Surface

PACKING

QBH BULK

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

QBH SMALL PACKING

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

QBH PALLET TYPE

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

The advantages of QBH

• QBH brand sales to the main quality assurance.
• Years of export trade management, excellent service, word-of-mouth guarantee.
• By working with TUV,escort for quality.
• Customization of non-standard parts can be made according to customer's requirements and drawings.
• For quality customers,we can provide a certain credit period.

Product application

      The ASTM A563 specification covers the chemical and mechanical requirements for carbon and alloy steel nuts used on bolts, studs, and externally threaded fasteners. The charts below address over tapping allowances for hot-dip galvanized nuts, grade marking requirements, and mechanical requirements. For information on suitable nuts for various grades of bolts, visit the Nut Compatibility Chart.

     QBH company according to the A563 specification, “The requirements for any grade of nut may, at the supplier’s option, and with notice to the purchaser, be fulfilled by furnishing nuts of one of the stronger grades specified herein unless such a substitution is barred in the inquiry and purchase order”. This is important because some nut grades are not readily available in certain sizes and finishes. Additionally, the specification allows for the substitution of ASTM A194 grade 2H nuts in lieu of A563 grade DH nuts due to the lack of availability of grade DH nuts in nominal sizes 3/4″ and larger.

       Hot-dip galvanized nuts must be tapped oversize to allow for the added thickness of the zinc on the threads of the externally threaded fastener. These allowances are addressed in the chart below and a more detailed explanation of this issue can be found in the Frequently Asked Questions section of this site.

Various nut styles exist and to some degree are determined by their grade. These styles include hex, heavy hex, square, jam, coupling, and sleeve.

Thread Dimensions and Oversizing Allowances

For Nuts: Hot Dipped Galvanized per Specification F2329