Sleeve Anchor Through-Bolt M8-M24 | Zinc & A4 DIN/ISO Concrete Fixing
Product Introduction
The FS-02 is what we call a through-bolt sleeve anchor. Plain version of the job: you drill a hole right through whatever you're fixing and into the concrete below, slide the anchor in, then tighten the nut. The nut pulls the threaded stud up, the tapered cone forces the sleeve to expand, and the whole assembly locks against the hole wall. No resin, no curing time, no torque-wrench gymnastics. It grips the moment you snug it.
We've been making these since before most of our customers started buying them. The sleeve is drawn from C1022 carbon steel, rolled rather than machined, so the wall thickness stays consistent and the expansion stays even. On the stainless side we run A2 or A4 depending on the job — A4 for coastal sites, chemical plants, anywhere salt or fumes eat ordinary steel.
The thread is rolled, not cut. On the 8.8 grade it's rolled after heat treatment — that's the detail most suppliers skip. Rolled threads hold their fatigue strength and come out burr-free, so the nut runs smooth straight out of the box. Zinc-plated units get a clear passivation on top — that's what gives the clean blue-white finish and keeps the salt-spray result honest.
Every batch gets a dimensional check on the sleeve OD and the cone angle before it ships. Those two numbers decide whether the anchor expands properly in the hole or just spins. We check them on a CMM and the report travels with the shipment. If you're fixing handrails, machinery, steel columns, or racking into concrete, the FS-02 does the job without drama.
Full Specification Table
| Parameter | Specification |
| Material— Carbon Steel | C1022 (SAE 1022) for class 4.8 / 5.8; medium-carbon steel, quenched & tempered, for class 8.8 |
| Material — Stainless Steel | A2-70 (304), A4-70 / A4-80 (316) |
| Surface Finish | Blue zinc, white zinc, yellow zinc, hot-dip galvanized, plain |
| Thread | Metric coarse, ISO 68-1, tolerance 6g; rolled after heat treatment (class 8.8) |
| Expansion Mechanism | Tapered cone pressed into split sleeve |
| Installation Method | Hammer drill, standard masonry bit, nut tightening |
| Drill Size | M8–M16: anchor diameter + 2 mm; M20–M24: anchor diameter + 4 mm |
| Min. Edge Distance | 5 × anchor diameter (reference) |
| Min. Anchor Spacing | 5 × anchor diameter (reference) |
| Working Temperature | -40 °C to +80 °C (typical) |
| Quality Control | CMM dimensional check per batch; performance tested per ASTM E488 |
| Certification | CE, RoHS; SGS inspection reports on request |
Size Chart
|
Size |
Thread |
Drill Ø (mm) |
Min. Embedment (mm) |
Length Range (mm) |
Box Qty |
|
M8 |
M8 × 1.25 |
10 |
35 |
65 – 130 |
100 |
|
M10 |
M10 × 1.5 |
12 |
40 |
80 – 160 |
50 |
|
M12 |
M12 × 1.75 |
14 |
50 |
90 – 200 |
50 |
|
M16 |
M16 × 2.0 |
18 |
60 |
110 – 260 |
25 |
|
M20 |
M20 × 2.5 |
24 |
75 |
150 – 300 |
10 |
|
M24 |
M24 × 3.0 |
28 |
90 |
200 – 300 |
10 |
Values above are standard configurations. Project-specific tension and shear data, plus approved installation parameters, ship with each order.
Applications
Why Fasto
Pain Points & Solutions
|
Pain Point |
What Usually Goes Wrong |
How the FS-02 Handles It |
|
Anchor spins in the hole |
Sleeve never expands; cone and sleeve geometry out of tolerance |
Sleeve wall thickness and cone angle are CMM-checked on every batch |
|
Nut jams or thread burrs |
Cheap cut threads, poor post-treatment |
Threads rolled (after heat treatment on 8.8) — smooth run-on, better fatigue strength |
|
Corrosion within a year |
Thin zinc layer, no passivation |
Clear passivation over zinc; A4 stainless for coastal and chemical sites |
|
Wrong hole drilled |
No guidance, mixed knowledge on site |
Drill size marked on the pack; size chart included with every shipment |
|
Overtorque damage |
No torque data, nut and stud galling |
Recommended torque printed on the pack; zinc layer reduces galling |
| Mixed-size orders arrive with wrong counts | Batch traceability and per-size box counts; custom kit packing on request |