B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts

Place of Origin CHINA
Brand Name QBH
Certification ISO9001
Model Number 1/4--1inch
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

B18.5 Round Head Square Neck Bolts

,

Gr2 Round Head Square Neck Bolts

,

SAE J429 Bolt Round Head Square Neck

Leave a Message
Product Description

B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts

 

Specification

 

Carriage bolts (round head with a square neck) are commonly used in wood connections. The square neck under the round head will seat into the hole in the wood to prevent the head from turning. Because they are used with wood, carriage bolts are rarely high strength and virtually always supplied in a standard ASTM A307 specification.

 

Manufacturing
 

QBH Bolt manufactures carriage bolts from 1/2″ diameter through 1-1/4″ diameter in most ASTM and SAE specifications. Special tooling can be created to produce nonstandard head dimensions, carriage bolts larger than 1″ in diameter, or bolt heads with your company’s name and/or logo.

 

 

Made from Grade 5 steel, these bolts are suitable for fastening most machinery and equipment. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Grade 5 steel bolts are marked with three radial lines. Material meets SAE J429 specifications for quality. Dimensions meet ASME B18.5 specifications. Length is measured from under the head.
 
Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. Zinc-aluminum-coated steel screws are 40 times as corrosion resistant as zinc-plated screws and comparable to Magni-coated screws.

 

 

 

 

 

Bolt Diameter D C H P F
Body Diameter Head Diameter Head Height Square Width Square Depth
Max Min Max Min Max Min Max Min Max Min
12 0.515 0.483 1.094 1.032 0.270 0.250 0.515 0.492 0.281 0.250
58 0.642 0.605 1.344 1.219 0.344 0.313 0.642 0.616 0.344 0.313
34 0.768 0.729 1.594 1.469 0.406 0.375 0.768 0.741 0.406 0.375
78 0.895 0.852 1.844 1.719 0.469 0.438 0.895 0.865 0.469 0.438
1 1.022 0.976 2.094 1.969 0.531 0.500 1.022 0.990 0.531 0.500
114* 1.277   2.850   0.531 0.500 1.250   0.625

 

 

 

Standard Thread Length

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

Note: Most stock carriage bolts have extended thread length.

 

 

 

 

Process flow

 

Cold forging

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

 

 

 

 

Product Grade


B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts 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.