ASME B 18.2.1 - 2010 Hex Flange Screws Carbon Steel

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number 1/4 to 3/4
Minimum Order Quantity 900kg
Price 800USD/TON-1350USD/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 ASME B 18.2.1 - 2010 Hex Flange Screws Material Carbon Steel
Size 1/4 To 3/4 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

ASME B 18.2.1 Hex Flange Screws

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Carbon Steel Hex Flange Screws

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Grade 8 Steel Hex Flange Screws

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Product Description

ASME B 18.2.1 - 2010 Hex Flange Screws

 QBH Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. Material meets SAE J429 specifications for quality. Dimensions meet IFI 111 specifications. Grade 8 steel hex head screws are marked with six radial lines. Head height includes the flange. Length is measured from under the flange.

     Black-phosphate steel screws are mildly corrosion resistant in dry environments. Zinc yellow-chromate plated steel screws resist corrosion in wet environments.

     Match the thread spacing of mating components. Coarse threads are the industry standard;choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration

 

 

ASME B 18.2.1 - 2010 Hex Flange Screws Carbon Steel 0

QBH Thread Size
d
1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4
PP UNC
UNF
ds max
min
s Basic
max
min
e max
min
dc max
c min
k max
b L≤6
L>6
r max
min
20 18 16 14 13 12 11 10
28 24 24 20 20 18 18 16
0.25 0.3125 0.375 0.4375 0.5 0.5625 0.625 0.75
0.245 0.3065 0.369 0.4305 0.493 0.5545 0.617 0.741
3/8 1/2 9/16 5/8 3/4 13/16 15/16 1-1/8
0.375 0.5 0.5625 0.625 0.75 0.8125 0.9375 1.125
0.367 0.489 0.551 0.612 0.736 0.798 0.922 1.1
0.433 0.577 0.65 0.722 0.866 0.938 1.083 1.299
0.409 0.548 0.618 0.685 0.825 0.895 1.034 1.234
0.56 0.68 0.81 0.93 1.07 1.19 1.33 1.59
0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11
0.28 0.32 0.39 0.46 0.51 0.57 0.62 0.73
0.75 0.875 1 1.125 1.25 1.375 1.5 1.75
1 1.125 1.25 1.375 1.5 1.625 1.75 2
0.025 0.025 0.025 0.025 0.025 0.045 0.045 0.045
0.015 0.025 0.025 0.025 0.025 0.020 0.020 0.020

 

 


 

Process flow

Cold forging

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

 

 

 


 

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.

 

FAQ


1. How do you let me trust you.
 
Jiaxing City Qunbang Hardware Co.,ltd hs its own right of import and export,QBH trademark in China,United States,European Union have been registered.At the same time,you can also check the registration information of our company in the China industry and Commerce system.
 
2. How about your price.
 
We will be based on different markets,for different quality and quantity,tailor-made prices for customers,in order to achieve win-win goal.
 
3. How do you control your quality.
 
Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC),and the random samples is sent to TUV for testing.If the customer received the goods and found quality problems,QBH company promises to be responsible for returning money or replenishing the goods
 
4. Could you provide free samples?
 
For new customer, We can provide free samples for standard fastener, But the clients will pay the express
charges. For old customer, We will send you free samples and pay express charges by ourself.
 
5. Do you accept small order?
 
QBH company can accept small orders if we have them in stock.Generally speaking,the stock probability of stainless steel fasteners is higher than that of carbon steel fasteners.
 
6. How about your delivery time
 
What we pursure is the high efficiency movement pattern,the stainless steel fastener delivery time about 15days,the carbon steel fastener will it about 30days
 
7. What is your packing.
 
Usually 25KG/carbon,36CTNS on the pallets,or 20-30kg/Bags,then on the pallet,QBH company personalized packagingis also available,like 10PCS/plastic bag or 10pcs/box,it can print some information
such as LOGO and pattern of customers.
 
8. What is your payment term
 
Normally,our terms of payment are TT and L/C,if we cooperate for a long time,we can reach the point of mutual trust,and fully support our customers to become bigger and stronger in the local market.
Not only in the price concessions,but also in the payment can also be made on credit,Specific credit sales time needs to be negotiated separately