Industrial Nuts · MR-020
ASTM A563 Grade DH Heavy Hex Nuts
ASTM A563 Grade DH (heavy hex)
ASTM A563 Grade DH heavy hex nuts are specified in certain structural bolting assemblies. Nut selection must follow the relevant structural connection standard, bolt grade and coating system.
Product specifications, quantities and delivery requirements are reviewed individually to prepare a tailored quotation.
Product overview
Industrial fastener sourcing for your application.
ASTM A563 Grade DH heavy hex nuts are specified in certain structural bolting assemblies. Nut selection must follow the relevant structural connection standard, bolt grade and coating system. Send standard, size, material or property class, finish, order quantity and destination for an itemised quotation.
Common application
structural bolting.
HEXVARO supplies this product from production in Hebei and Anhui, China. Reference MOQ 500 pcs per specification; lead time 10–15 days for stock items, 25–30 days for production.
Technical overview
Build a clear purchase specification.
Tell us which product configuration you need. A standard reference describes a product type; individual supply options are quoted against your request.
| RFQ field | What to specify |
|---|---|
| Product standard | ASTM A563 Grade DH (heavy hex) |
| Diameter, pitch & length | Include the required size, thread and length in your inquiry |
| Material & property class | State the required material specification and strength grade |
| Surface finish | Specify the coating or corrosion-protection requirement |
| Quantity & destination | Provide quantity per size, destination and packaging needs |
Key dimensions
ASME B18.2.2 heavy hex nut dimensions.
Heavy hex nuts are 1/8 in wider across flats than finished hex nuts of the same thread. Nuts for hot-dip galvanized bolts are tapped oversize. Nominal values cross-checked against the published sources below; the governing standard edition and your drawing control the order.
| Size | Across flats F | Thickness H | Inquiry |
|---|---|---|---|
| 1/2 | 7/8 | 31/64 | Quote this size |
| 5/8 | 1-1/16 | 39/64 | Quote this size |
| 3/4 | 1-1/4 | 47/64 | Quote this size |
| 7/8 | 1-7/16 | 55/64 | Quote this size |
| 1 | 1-5/8 | 63/64 | Quote this size |
| 1-1/8 | 1-13/16 | 1-7/64 | Quote this size |
| 1-1/4 | 2 | 1-7/32 | Quote this size |
| 1-3/8 | 2-3/16 | 1-11/32 | Quote this size |
| 1-1/2 | 2-3/8 | 1-15/32 | Quote this size |
Dimension sources Heavy hex nuts to ASME B18.2.2 (Wermac) · Heavy hex nut dimensions table (AMES)
Packing, shipping and documents
| MOQ | 500 pcs per specification; mixed sizes can be combined on one order |
|---|---|
| Lead time | 10–15 days for stock items, 25–30 days for production orders, confirmed in the quotation |
| Export packing | Inner boxes or bags labelled by size, export cartons, then palletized and stretch-wrapped; buyer labels and barcodes on request |
| Shipping ports | Tianjin, Ningbo, Shanghai, Shenzhen |
| Incoterms | EXW, FOB, CFR, CIF, DAP, DDP on request |
| HS code reference | HS 7318.16 is the usual heading for steel nuts. Confirm the final code with your customs broker. |
| Certificate of origin | ACFTA Form E available on request for buyers in ASEAN countries such as Malaysia, Indonesia, Vietnam and the Philippines |
| Order documents | Commercial invoice, packing list and inspection records agreed in the quotation |
Common RFQ specifications
What buyers usually specify.
Typical size ranges, lengths, grades and finishes named in RFQs for this product type. This is a guide for writing the inquiry, not a stock list: each size, grade and finish is confirmed in the quotation.
| Sizes commonly quoted | 1/2–1-1/2 in |
|---|---|
| Grades | ASTM A563 DH (carbon), DH3 (weathering) |
| Finishes | Plain, hot-dip or mechanically galvanized (lubricated and tapped oversize) |
| Usually ordered with | F3125 A325 / A490 bolts and F436 washers as one lot |
Reference MOQ: 500 pcs per specification (subject to quotation). Sizes outside these ranges and quantities below 500 may still be submitted for review.
Applications & selection
Fit the fastener to the assembly.
Use these application contexts to help your engineering or purchasing team prepare a clear request.
- Bolted assemblies
- Equipment maintenance
- Industrial distribution
The inquiry is organized around ASTM A563 Grade DH (Inch-series, US standardHeavyStructuralNut); the final source, revision and acceptance criteria remain order-specific.
Your RFQ
Send the specification, not a shopping cart.
Share the part number or drawing, quantity and destination. We'll review the request and prepare a tailored quotation.
- Product name and exact standard / revision
- Diameter, length, thread, material and grade
- Surface finish and service conditions
- Quantity per item, packaging and required documents
Technical FAQ
Answers for industrial buyers.
What are jam nuts?
Thin hex nuts (DIN 439) used as locknuts tightened against a standard nut.
What is the most important input for a nut inquiry?
Start with the mating bolt or stud standard and thread. Nut style and mechanical requirement come next.
What does this page confirm?
It organizes a product-specific inquiry. Reference MOQ is 500 pcs per specification and lead time is 10–15 days for stock items or 25–30 days for production; price, certification documents and delivery are confirmed in your written quotation.
What should be stated with ASTM A563 Grade DH (heavy hex)?
State the exact revision, dimensions, material or grade, finish, quantity, destination and required documents. The inquiry is organized around ASTM A563 Grade DH (Inch-series, US standardHeavyStructuralNut); the final source, revision and acceptance criteria remain order-specific.
Related products
Complete your fastener inquiry.
Industrial Nuts · MR-020 inquiry
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Product name, SKU, standard reference and source URL are carried into the form so you can edit the actual dimensions, material, grade, finish, quantity, destination and document requirements.
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