ANSI Carbon Steel SAE J429 Square Head Bolts Grade 8

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number 1/4--1-1/2
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 B18.2.1 Material Carbon Steel
Size 1/4 To 1-1/2 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
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SAE J429 Square Head Bolts Grade 8

,

Carbon Steel Square Head Bolts Grade 8

,

Grade 2 Square Headed Bolt With Hexagonal Nut

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Product Description

SAE J429 Square Head Bolts Grade 2 Grade 5 Grade 8

 

Specification

 

Square head machine bolts were the industry standard prior to hex bolts gaining prominence. Square bolts are now most commonly used for aesthetic purposes to provide a rustic look in a new structure or to match existing fasteners in an older structure. Square lag screws are also used for these purposes.

Crossarm or machine bolts are commonly supplied for the utility industry and included an added cone point.

Manufacturing

 

QBH Bolt manufactures square bolts from 1/2″ diameter through 2″ diameter in most ASTM and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.

 

ANSI Carbon Steel SAE J429 Square Head Bolts Grade 8 0

 

Screw Thread
d

1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2
PP UNC
ds max
min
s Basic
max
min
e max
min
k Basic
max
min
r max
min
b L≤6
L>6
20 18 16 14 13 11 10 9 8 7 7 6 6
0.260 0.324 0.388 0.452 0.515 0.642 0.768 0.895 1.022 1.149 1.277 1.404 1.531
0.237 0.298 0.36 0.421 0.482 0.605 0.729 0.852 0.976 1.098 1.223 1.345 1.47
3/8 1/2 9/16 5/8 3/4 15/16 1-1/8 1-5/16 1-1/2 1-11/16 1-7/8 2-1/16 2-1/4
0.375 0.500 0.562 0.625 0.750 0.938 1.125 1.312 1.500 1.688 1.875 2.062 2.250
0.362 0.484 0.544 0.603 0.725 0.906 1.088 1.269 1.450 1.631 1.812 1.944 2.175
0.53 0.707 0.795 0.884 1.061 1.326 1.591 1.856 2.121 2.386 2.652 2.917 3.182
0.498 0.665 0.747 0.828 0.995 1.244 1.494 1.742 1.991 2.239 2.489 2.738 2.986
11/64 13/64 1/4 19/64 21/64 27/64 1/2 19/32 21/32 3/4 27/32 29/32 1
0.188 0.220 0.268 0.316 0.348 0.444 0.524 0.620 0.684 0.780 0.876 0.940 1.036
0.156 0.186 0.232 0.278 0.308 0.400 0.476 0.568 0.628 0.720 0.812 0.872 0.964
0.03 0.03 0.03 0.03 0.03 0.06 0.06 0.06 0.09 0.09 0.09 0.09 0.09
0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.03
0.750 0.875 1.000 1.125 1.250 1.500 1.750 2.000 2.250 2.500 2.750 3.000 3.250
1.000 1.125 1.250 1.375 1.500 1.750 2.000 2.250 2.500 2.750 3.000 3.250 3.500

 

 

Standard Thread Lengths

Bolt lengths < 6″: Thread length = (2 X diameter) + 1/4″
Bolt lengths > 6″: Thread length = (2 X diameter) + 1/2″

 

Process flow

 

Cold forging

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

 

Hot forging

Cutting material hot forging turning ➨ shrink diameter(half thread) ➨thread rolling make heat treatment(if need)Finish Packing

 

 

Product Grade


ANSI Carbon Steel SAE J429 Square Head Bolts Grade 8 1

 

 

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.