MOQ: | 900kg |
Price: | Negotiation |
Standard Packaging: | 25KG/CTN,36CTN/PALLET or small packing |
Delivery Period: | 30DAYS |
Payment Method: | L/C, T/T |
Supply Capacity: | 500TON/MONTH |
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.
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 |
ds |
s |
e |
k |
r |
b |
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
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
MOQ: | 900kg |
Price: | Negotiation |
Standard Packaging: | 25KG/CTN,36CTN/PALLET or small packing |
Delivery Period: | 30DAYS |
Payment Method: | L/C, T/T |
Supply Capacity: | 500TON/MONTH |
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.
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 |
ds |
s |
e |
k |
r |
b |
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
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