Socket Head Cap Screws · SKU30
DIN 7991 / ISO 10642 Countersunk Socket Screws
ISO 10642 / DIN 7991 (metric countersunk socket screw)
DIN 7991 / ISO 10642 Countersunk Socket Screws is supplied to your specification for importers, distributors and OEMs. Final dimensions, material, grade, finish and supply terms require quotation confirmation.
Product specifications, quantities and delivery requirements are reviewed individually to prepare a tailored quotation.
Product overview
Industrial fastener sourcing for your application.
Socket-head screw inquiries combine head geometry, drive access, thread, strength and available clearance. A nominal diameter alone is not enough. DIN 7991 / ISO 10642 Countersunk Socket Screws is supplied to your specification for importers, distributors and OEMs. Final dimensions, material, grade, finish and supply terms require quotation confirmation. HEXVARO supplies it from production in Hebei and Anhui; certification documents and delivery are confirmed for each order.
Common application
flush-mounted joints.
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 |
|---|---|
| Reference MOQ | Reference MOQ: 500 pcs per specification (subject to quotation) |
| Product standard | ISO 10642 / DIN 7991 (metric countersunk socket screw) |
| 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
DIN 7991 countersunk screw dimensions, common sizes.
Countersunk heads can carry less load than cap screws of the same class, so a grade marking alone does not confirm the joint. Confirm the standard and the rated load. Values are taken from the full chart; the governing standard edition and your drawing control the order.
| Size | Pitch P | Head dia. dk max | dk min | Head height k max | Hex key s | Socket depth t max | Head angle | Inquiry |
|---|---|---|---|---|---|---|---|---|
| M4 | 0.7 | 8 | 7.64 | 2.3 | 2.5 | 1.8 | 90° | Quote this size |
| M5 | 0.8 | 10 | 9.64 | 2.8 | 3 | 2.3 | 90° | Quote this size |
| M6 | 1.0 | 12 | 11.57 | 3.3 | 4 | 2.5 | 90° | Quote this size |
| M8 | 1.25 | 16 | 15.57 | 4.4 | 5 | 3.5 | 90° | Quote this size |
| M10 | 1.5 | 20 | 19.48 | 5.5 | 6 | 4.4 | 90° | Quote this size |
| M12 | 1.75 | 24 | 23.48 | 6.5 | 8 | 4.6 | 90° | Quote this size |
| M16 | 2.0 | 30 | 29.48 | 7.5 | 10 | 5.3 | 90° | Quote this size |
| M20 | 2.5 | 36 | 35.38 | 8.5 | 12 | 5.9 | 90° | Quote this size |
Full chart: DIN 7991 Countersunk Socket Head Screw Dimensions Chart
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 7318.15 is the usual heading for socket head cap screws. 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 | M3–M20 |
|---|---|
| Typical lengths | 8–100 mm |
| Grades | 8.8, 10.9; stainless A2-70 / A4-70 |
| Finishes | Black oxide, zinc plated, plain stainless |
| Specify | DIN 7991 or ISO 10642: head diameters differ (see the full chart) |
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.
- Machine frames
- Tooling and fixtures
- Industrial equipment
Use the reference examples as a starting point; confirm the exact revision, dimensions, material, finish and documents in the RFQ.
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.
Which head styles are available?
Cap (DIN 912 / ISO 4762), button head (ISO 7380) and countersunk (ISO 10642); inch-series per ASME B18.3.
What finishes are available?
Describe the finish and surface performance needed for the joint. Options are reviewed against the fastener material, dimensions and order conditions.
Are button-head and countersunk socket screws interchangeable with cap screws?
No. Head geometry and load or seating behaviour differ. The assembly drawing and clearance requirement control.
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 ISO 10642 / DIN 7991 (countersunk, hex socket)?
State the exact revision, dimensions, material or grade, finish, quantity, destination and required documents. The inquiry is organized around ISO 10642 / DIN 7991 (Metric); the final source, revision and acceptance criteria remain order-specific.
Related products
Complete your fastener inquiry.
Socket Head Cap Screws · SKU30 inquiry
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Send the controlled RFQ.
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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