Socket Head Cap Screw DIN 912 / ISO 4762

Class 12.9 alloy socket screw with a machined hex socket and controlled decarburisation. M5 to M20.

Size range: M5 – M20
Lengths: 12 – 150 mm
Property class: 12.9 · 10.9 · A2-70 · A4-80
Lead time: 18 – 24 days
Packaging: 20 kg carton, 40 cartons per pallet
Weight: 0.021 kg/pc at M8 × 30

Finishes quoted

Black oxide
Zinc flake
Zinc plated (clear trivalent)

Minimum order 3,000 pcs

Pack multiple 500 pcs

Quantity (pcs)

Add 7,000 pcs to reach the next break at $0.121/pc.

Qty (pcs)	USD / pc	Line value
3,000	$0.14	$426.00
10,000	$0.12	$1,210.00
50,000 +	$0.098	$4,900.00

Estimated line value $426.00

$0.14/pc · FOB Ningbo

Ask a question

No payment online. Submit an RFQ and a quote with freight, duty basis and lead time comes back within one business day.

Detail

What the drawing controls.

Cold-headed from SCM435 alloy steel, then quenched and tempered to 12.9 with the socket cold-formed (not cut) so the hex corners stay sharp under torque. Decarburisation is held within ISO 898-1 limits, which is what stops the threads from shearing at the root. Black oxide standard.

Typical applications

Machine tools
Moulds and dies
Robotics and automation

More on the family: how to specify screws →

Specification — TL-SH912
Standard	DIN 912 · ISO 4762
Thread	Metric coarse, 6g
Size range	M5 – M20
Lengths	12 – 150 mm
Property classes	12.9, 10.9, A2-70, A4-80
Finishes	Black oxide, Zinc flake, Zinc plated (clear trivalent)
Minimum order	3,000 pcs
Pack multiple	500 pcs
Lead time	18 – 24 days
Packaging	20 kg carton, 40 cartons per pallet
Unit weight	0.021 kg/pc at M8 × 30
Certificates	EN 10204 3.1 MTC · ISO 898-1 · RoHS · REACH

Before the PO

What to specify when you order this part.

Send these six lines with the enquiry and the first reply is a price, not a question.

Standard or drawing — DIN 933, ISO 4032, ASTM A193 B7 — or a dimensioned PDF/STEP.
Size and length — Thread size, length, and the length convention the drawing uses.
Property class — 4.8, 8.8, 10.9, 12.9, A2-70, A4-80 — and the joint’s preload, if it has one.
Finish — Zinc trivalent, hot-dip galvanized, zinc flake, black oxide, plain.
Quantity — Per size, per shipment, and annual volume if you have it.
Destination — Port or city and the Incoterm, so freight is in the first number.

Paperwork

What ships in the carton.

Documents are issued per lot, not per year. The lot number on the label is the key to all of them.

Document	Covers
EN 10204 3.1	Mill test certificate for the wire rod heat — chemistry and mechanical properties.
ISO 898-1 / -2	Tensile, proof load and hardness results for the production lot.
Coating report	Thickness readings per plating batch, with the salt-spray coupon reference.
FAI / PPAP 3	Ballooned drawing and full dimensional report. On request, before the run.
RoHS · REACH	Declaration of conformity for the coating and material.
Packing list	Lot number, carton count, gross and net weight, HS 7318 for the broker.

Duty, origin and the full document list →

Before you order

Questions the sales desk actually gets.

Anything else, email sales@ianzai.com — a person answers, usually inside a shift.

What is the minimum order quantity for this part?

This SKU starts at 3,000 pcs and steps in multiples of 500. The stepper will not accept a smaller quantity, and the quote desk will not quietly re-quote one.

Can I get samples before ordering?

Up to five pieces from current stock are free; you cover the courier. For a production-representative sample from a new die, allow 5 – 8 working days and a tooling charge that is credited against the first order.

Which documents ship with the lot?

EN 10204 3.1 for the heat, an ISO 898 test report for the lot, and coating thickness with the salt-spray coupon. FAI and PPAP level 3 are quoted separately because they are built per part number.

Which Incoterms do you quote?

FOB Ningbo or Shanghai as standard, CIF to your port on request, and DDP where we have a cleared forwarder. The RFQ form asks for your port so the first quote already includes freight.

How is the unit price calculated?

From the break at or below your quantity — not an average. Quantities between breaks pay the lower break’s price, which is why the line total is recalculated on the server when you submit.

Can you make a non-standard length or thread?

Yes. Send the drawing, or the standard plus the deviation. Tooling is quoted separately, and we will say plainly if the tolerance is outside what cold heading can hold.

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