GR2 Bolt Round Head Square Neck

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number 1/2-1-1/4inch
Minimum Order Quantity 900kg
Price 800USD/TON-3000USD/TON
Packaging Details 25KG/CTN,36CTN/PALLET or small packing
Delivery Time 30DAYS
Payment Terms L/C, T/T
Supply Ability 500TON/MONTH
Product Details
Standard ANSI B18.5 Material Carbon Steel
Size 1/4 To 1 All Kind Of Length Finish ZP YZP HDG BLACK
Grade 2,5,8 Packing Carton And Pallet Or According To The Customer's Requirement
Sample Free Sample Thread Mushroom Head Square Neck
Lead Time Per On Order Quantity Type Hexagon Head
Advantage We Can Manufacture According To Client Design,OEM / ODM / Customized Service Provided Oem Yes,welcome
High Light

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Product Description

304 GR2 HDG YZP BALCK ZP SAE J429 Bolt Round Head Square Neck

 

Specification

 

Round head bolts (button head) are commonly used in wood connections. Round head bolts are similar to carriage bolts, but without the square neck under the head. Because they are used with wood, round head bolts are rarely high strength and virtually always supplied in a standard ASTM A307 specification
 

Manufacturing
 

QBH Bolt manufactures button head bolts from 12” through 114 ” diameter in most ASTM and SAE specifications. Special tooling can be created to produce nonstandard head dimensions, button head bolts larger than 114” in diameter, or bolt heads with your company’s name and/or logo.

 

 

Bolt Diameter C H
Head Diameter Head Height
Max Min Max Min
12 1.094 1.032 0.270 0.250
58 1.344 1.219 0.344 0.313
34 1.594 1.469 0.406 0.375
78 1.844 1.719 0.469 0.438
1 2.094 1.969 0.531 0.500
114 2.850   0.531 0.500
*Dimensions per ASME B18.5 1990 (R 1998) cover diameters up to 1". Bolts over 1" use custom head dimensions.

 

 

Standard Thread Length

Bolt lengths ≤ 6″: Thread length = (2 X diameter) + 14
Bolt lengths > 6″: Thread length = (2 X diameter) + 12

 

Process flow

 

Cold forging

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

 

 

 

 

Product Grade


GR2 Bolt Round Head Square Neck 0

 

 

Materials and Chemical compstition

1008

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Al
0.06 0.06 0.33 0.013 0.003 0.01 0 0.01 0.028

 

 

1035

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.34 0.13 0.73 0.012 0.002 0.02 0.01 0.02

 

 

10B21

CHEMICAL COMPOSI %
C Si Mn P S Cr B
0.2 0.04 0.81 0.017 0.007 0.017 0.0021

 

 

1045

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.45 0.23 0.58 0.014 0.006 0.057 0.008 0.016

 

40CR

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.4 0.21 0.54 0.015 0.008 0.95 0.02 0.02

 

35CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.35 0.22 0.59 0.01 0.003 0.93 0.01 0.01 0.21

 

 

42CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.42 0.27 0.92 0.013 0.004 1.01 0.03 0.04 0.2

 


 

 

Finish

 

PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

 

 

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.