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Round Head Square Neck Carriage Bolt
  • Round Head Square Neck Carriage BoltRound Head Square Neck Carriage Bolt
  • Round Head Square Neck Carriage BoltRound Head Square Neck Carriage Bolt

Round Head Square Neck Carriage Bolt

JOIN-fasteners® is a strong, reliable and professional factory and supplier in China for Round Head Square Neck Carriage Bolt. We have over 18 years experience in producing Carriage bolts. You'll have premium quality,favorable price and on time delivery from us. We stand behind our products, and rigidly carry out quality control to every process of production. JOIN us, have the most valuable, professional solution and consultant.

Jiaxing Join Fasteners Co.,Ltd. supply a wide range of Imperial Carriage Bolts. You can always rely on our team for a premium-quality, competitive pricing, on-time delivery, one-stop buy business partnership.  All products are manufactured to right specification and high quality standard.


Carriage bolts are pushed into a hole the same size as the shank and then hammered in the rest of the way, where the square shoulder locks it firmly in place. Used whenever a smooth finish surface is needed so that nothing becomes snagged on the fastener. Galvanized finish allows for greater corrosion resistance, used in outdoor furniture.


Round Head Square Neck Carriage Bolt Attributes:


Dimensions: ASME B18.5
Material and Mechanical: SAE J429; Grade 2,5,8 
Grade A per ASTM A307
Head: Round head Square Neck
Dia/Thread Size: ASME B1.1, UNC Class 2A
Finish: Fe/Zn 3AN per ASTM F1941/F1941M
Galvanize per ASTM A153/A153M or ASTM F2329/F2329M
Head Marking: Grade 2: Manufacturer’s ID.
Grade 5: Manufacturer’s ID and 3 radial lines 120° apart. 
Grade 8: Manufacturer’s ID and 6 radial lines 60° apart.
Grade A: Manufacturer ID and “307A”
Grade: 2,5,8, A307 A
Type: Carriage Bolt
Test Reports: The MTR must have documented lot traceability, dimensional
results, full chemical test results and full mechanical test results
to the specification(s) below.


Technical Reference:



Nominal Size or
Basic Bolt
Diameter
E A H O P Q R
Body
Diameter
Head
Diameter
Head Height Square Width Square
Depth
Corner
Radius on
Square
Fillet
Radius
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Max.
1/4 0.2500 0.260 0.213 0.594 0.563 0.145 0.125 0.260 0.245 0.156 0.125 0.031 0.031
5/16 0.3125 0.324 0.272 0.719 0.688 0.176 0.156 0.324 0.307 0.187 0.156 0.031 0.031
3/8 0.3750 0.388 0.329 0.844 0.782 0.208 0.188 0.388 0.368 0.219 0.188 0.047 0.031
7/16 0.4375 0.452 0.385 0.969 0.907 0.239 0.219 0.452 0.431 0.250 0.219 0.047 0.031
1/2 0.5000 0.515 0.444 1.094 1.032 0.270 0.250 0.515 0.492 0.281 0.250 0.047 0.031
5/8 0.6250 0.642 0.559 1.344 1.219 0.344 0.313 0.642 0.616 0.344 0.313 0.078 0.062
3/4 0.7500 0.768 0.678 1.594 1.469 0.406 0.375 0.768 0.741 0.406 0.375 0.078 0.062

Gade 2,5,8 per SAE J429: Nominal thread length: 2d + 1/4 for lengths up to 6". 2d + 1/2 for lengths over 6"

Grade A per ASTM A307: Full Diameter Body on product over 12” in length. Full or Reduced Diameter Body 6” < thru 12” lengths

                                            (Reduced body diameter having a limit equal to the minimum pitch diameter)

                                            Exceptions: bolts less than or equal to 6 inches in length shall be fully threaded. Bolts longer than 6” shall have 6” of full form threads.




Service and Terms:


Price term: FOB,CIF,CFR,EXW,DDP,DDU.

Lead time: Normal 45-60 days.

Packing way: Packing for warehouse(bulk in master carton, small boxes packing),

                          DIY packing for store(tubs,cards, kits, pouches,etc.).

Payment terms: TT, LC, we offer our close clients flexible payment terms and financial solution.

Dial number +86-573-83772218 or email to bob@jjbfasteners.com, your request will be promptly replied.




Hot Tags: Round Head Square Neck Carriage Bolt, China, Manufacturer, Supplier, Factory
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Contact Info
If you have any enquiry about quotation or cooperation, please feel free to email or use the following inquiry form. Our sales representative will contact you within 24 hours.

We stand behind our products. All products are manufactured to right specification and high quality standard. Any items found defective or in shortage , an immediate investigation will be conducted and corrective action report will be issued. Claims and returns are given a nice care here.

  • R&D
    Customer Service

    You can always rely on our team for a premium-quality, competitive pricing, on-time delivery, one-stop buy business partnership. We have over 18 years experience in exporting various kinds of carbon steel, stainless steel, Bi-Metal fasteners.

    Dial number 0086 573 83772218 or email to sales@jjbfasteners.com, your request will be promptly replied.

  • Production capacity
    Quality Assurance

    We rigidly carry out quality control to each step of production:


Production Process



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