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ANSI ASME IFI B18.2.2 Hex Coupling nuts Heavy Hex Coupling nuts 1/2 to 4inch A563 (grades A, C, and DH), A194 grade 2H
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xProduct Details
| Standard | ANSI | Material | Carbon Steel |
|---|---|---|---|
| Size | 1/4 To 4 INCH | Surface Treatment | YZP ZP BLACK HDG |
| Grade | A563 (grades A, C, And DH), A194 Grade 2H | Sample | Sample Is Free |
| Lead Time | Per On Order Quantity | Type | Hexagon Head |
| Function | Fastening,Fastening And Decoration,Connection,Prevention Of Thievery | Advantage | We Can Manufacture According To Client Design,OEM / ODM / Customized Service Provided |
| Oem | Yes,welcome | Thread | UNC,UNF |
| Package | Suitable For Sea And Air Transportation Or As Required,Cartons&pallets Or According To Custom |
Product Description
Specification
Coupling nuts (also known as a rod coupling, rod coupling nut, coupler nut, or extension nut), is a threaded fastener for joining two male threads, most commonly threaded rods. The outside surface of the coupling nut is usually a hex shape to allow for wrench tightening. Reducing coupling nuts are a variant design that allows the joining of two rods of differing thread sizes.
Trust QBH fastener with supplying your metric and SAE coupling nuts. We provide a wide range of sizes and finishes including hot dipped galvanized, plain and zinc. Please contact us today if you can’t find the exact product or size needed as we have many products not listed on our website.
Coupling Nuts are used to make up long tie rod assemblies from shorter lengths of rod and to facilitate assembly of two fasteners or fittings which both have external threads. Coupling nut dimensions are described by the Industrial Fasteners Institute, in IFI-128.
Dimensions
Coupling Nuts
|
Thread Diameter |
Across Flats Size |
Across Points Size |
Length |
Weight Each (lbs) |
|---|---|---|---|---|
| 1/2 | 3/4 | 7/8 | 1 1/2 | 0.12 |
| 5/8 | 1 | 1 1/8 | 1 7/8 | 0.30 |
| 3/4 | 1 1/8 | 1 5/16 | 2 1/4 | 0.42 |
| 7/8 | 1 5/16 | 1 7/16 | 2 5/8 | 0.56 |
| 1 | 1 1/2 | 1 3/4 | 3 | 0.99 |
| 1 1/8 | 1 5/8 | 1 7/8 | 3 3/8 | 1.23 |
| 1 1/4 | 1 7/8 | 2 3/16 | 3 3/4 | 1.93 |
| 1 3/8 | 2 | 2 5/16 | 4 1/8 | 2.31 |
| 1 1/2 | 2 1/4 | 2 5/8 | 4 1/2 | 3.33 |
| 1 5/8 | 2 3/4 | 3 3/16 | 4 7/8 | 6.17 |
| 1 3/4 | 2 3/4 | 3 3/16 | 5 1/4 | 6.16 |
| 1 7/8 | 3 | 3 7/16 | 5 5/8 | 8.01 |
| 2 | 3 1/4 | 3 7/16 | 6 | 7.9 |
| 2 1/4 | 3 1/2 | 4 1/16 | 6 3/4 | 12.7 |
| 2 1/2 | 3 7/8 | 4 1/2 | 7 1/2 | 17.2 |
| 2 3/4 | 4 1/4 | 4 15/16 | 8 1/4 | 22.7 |
| 3 | 4 5/8 | 5 5/16 | 9 | 29.2 |
| 3 1/4 | 5 | 5 3/4 | 9 3/4 | 36.8 |
| 3 1/2 | 5 3/8 | 6 3/16 | 10 1/2 | 45.8 |
| 3 3/4 | 5 3/4 | 6 5/8 | 11 1/4 | 56.0 |
| 4 | 6 1/8 | 7 1/16 | 12 | 68 |
| 4 1/2 | 6 7/8 | 7 15/16 | 13 1/2 | 96 |
| 5 | 7 5/8 | 8 13/16 | 15 | 130 |
NOTES REGARDING STRENGTH
*When high strength rods are specified, coupling nuts produced to meet ASTM A563 grade DH and A194 grade 2H can be provided. These parts will meet all of the chemical and mechanical properties called for in those specifications.
Process flow
Cold forging
Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ tapping ➨make heat treatment(if need) ➨ Finish ➨ Packing
Hot forging
Cutting material ➨ hot forging ➨ turning ➨ tapping ➨ make heat treatment(if need) ➨ Finish ➨ Packing
Product Grade
Grade 2 Grade 5 Grade 8
Materials and Chemical compstition
| J995 Chemical Requirements | ||||
| Grade | Carbon, % | Phosphorus, % | Manganese, % | Sulfur, % |
| 2 | 0.47 max | 0.120 max | - | 0.15 max |
| 5 | 0.55 max | 0.050 max | 0.30 min | 0.15 max |
| 8 | 0.55 max | 0.040 max | 0.30 min | 0.05 max |
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
Standard finish is plain, with either a cold drawn or hot rolled mill finish, depending on the type of bar stock used. Hot Dip Galvanizing is available, as well as zinc electroplating.
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
Mechanical property
| J995 Mechanical Properties | |||
| Grade | Nominal Size, inches | Proofload, UNC and UN 8 Threads, psi | Rockwell Hardness |
| 2 | 1/4 thru 1-1/2 | 90,000 | C32 Max |
| 5 | 1/4 thru 1 | 120,000 | C32 Max |
| Over 1 thru 1-1/2 | 105,000 | C32 Max | |
| 8 | 1/4 thru 5/8 | 150,000 | C24-C32 |
| Over 5/8 thru 1 | 150,000 | C26-C34 | |
| Over 1 thru 1-1/2 | 150,000 | C26-C36 | |
| *Values listed are not normally applicable to jam, slotted, castle, heavy or thick nuts. | |||
| J995 Tensile Stress Area | |||
| Thread, UNC | UNC Stress Area, sq inches | Thread, 8TPI |
8 TPI Stress Area, sq inches |
| 1/2-13 | 0.1419 | ||
| 5/8-11 | 0.226 | ||
| 3/4-10 | 0.334 | ||
| 7/8-9 | 0.462 | ||
| 1-8 | 0.606 | 1--8 | 0.606 |
| 1-1/8-7 | 0.763 | 1-1/8-8 | 0.79 |
| 1-1/4-7 | 0.969 | 1-1/4-8 | 1 |
| 1-3/8-7 | 1.155 | 1-3/8-8 | 1.233 |
| 1-1/2-6 | 1.405 | 1-1/2-8 | 1.492 |
| To calculate individual nut proofload value, simply multiply the tensile stress area by the appropriate psi proofload value. | |||
| Grade | 2 | 5 | 8 | ||||
| Size | 1/4 to 1-1/2 | 1/4 to 1 | 1/4 to 1 | 1 to 1-1/2 | 1 to 1-1/2 | 1/4 to 1-1/2 | 1/4 to 1-1/2 |
| Thread Series | UNC and 8NU | UNC and 8NU | UNF and 12UN or more fine thread | UNC and 8NU | UNF and 12UN or more fine thread | UNC and 8NU | UNF and 12UN or more fine thread |
| PROOF LOAD Unit:psi | |||||||
| HEX NUT | - | 120000 | 109000 | 105000 | 94000 | 150000 | 150000 |
| HEX FLANGE NUT | - | 120000 | 109000 | 105000 | 94000 | 150000 | 150000 |
| HEX JAM NUT | - | 72000 | 65000 | 63000 | 57000 | 90000 | 900000 |
| HEAVY HEX JAM NUT | - | 72000 | 65000 | 63000 | 57000 | 90000 | 900000 |
| HEX SLOTTED NUT | - | 96000 | 87000 | 84000 | 75000 | 120000 | 120000 |
| HEAVY HEX NUT | - | 133000 | 120000 | 116000 | 105000 | 165000 | 150000 |
| HEX THICK NUT | - | 133000 | 120000 | 116000 | 105000 | 165000 | 150000 |
| HEAVY HEX SLOTTED NUT | - | 105000 | 96000 | 92000 | 84000 | 132000 | 120000 |
| HEX THICK SLOOTED NUT | - | 105000 | 96000 | 92000 | 84000 | 132000 | 120000 |
| SQUARE NUT | 90000 | - | - | - | - | - | - |
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.
Product application
Hex couplers are used to connect two pieces of threaded material. Hex and heavy hex couplers are threaded right hand. If a right hand-left hand coupler is needed, consider using a sleeve nut.
See our nut compatibility chart to determine the compatible hex coupler for a specific grade of bolt. Since hot-dip galvanizing typically adds 2.2 to 5 mils of thickness to the threaded portion of a fastener, galvanized couplers are tapped oversize to compensate for the corrosion resistant coating on the bolts.
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