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Machine tap M28x1 DIN 374 C HSSE
0000007154
Thread size: M28x175 sizes of this tap
M3x0,35M3,5x0,35M4x0,5M5x0,5M6x0,75M8x0,75M8x1M10x0,5M10x0,75M10x1M10x1,25M11x1M12x1M12x1,25M12x1,5M14x1M14x1,25M14x1,5M15x1M15x1,5M16x0,75M16x1M16x1,5M16x1,75M17x0,75M17x1M18x1M18x1,25M18x1,5M18x2M19x1M20x1M20x1,25M20x1,5M20x2M22x1M22x1,5M22x2M23x1,25M24x1M24x1,5M24x2M25x1M25x1,5M25x2M27x1M27x1,5M27x2M28x1M28x1,5M28x2M30x1M30x1,5M30x2M32x1,5M32x2M33x1,5M33x2M34x1,5M35x1,5M36x1,5M36x2M36x3M38x1,5M39x1M39x1,5M40x1,5M42x2M48x1,5M48x2M48x3M50x1,5M52x1,5M52x3M56x3
€59.88 tax inc.
Net price: €48.68
Description
Material HSSE
Thread size M28x1
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M28x1 HSSE INOX general-purpose machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M28x1 |
| Thread Pitch P | 1 mm |
| Overall Length l1 | 140 mm |
| Flute Length l2 | 20 mm |
| Shank Diameter d2 | 20 mm |
| Square Drive Size a | 16 mm |
| Tap Drill Diameter | 27 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
Where chips remain in a straight-flute tap
The flute holds the chips until the tap is reversed out
The straight flute runs parallel to the tap axis. There is no helix to carry chips upward. The chamfer cutting edges are not ground at an angle, so they do not push chips downward. Short chips break into fragments and remain in the flute, next to the cutting edges that produced them. They leave the hole only when the tap is backed out. The M28x1 tap has a reduced shank to DIN 374: diameter 20 mm, square size 16 mm.
1
Straight flute – chips remain in the flute, next to the cutting edges that produced them.
2
Chamfer C: 2–3 incomplete threads on the tapered lead.
3
The tap rotates clockwise to cut a right-hand thread.
4
Individual fragments exit at the top, onto the workpiece surface.
5
A few fragments fall below the tip and exit through the bottom of the hole.
6
Feed 1 mm/rev, equal to the pitch of the M28x1 thread.
M28x1 INOX machine tap – HSSE for stainless steel
The M28x1 INOX machine tap is a professional tool for cutting internal M28 threads with a fine pitch of 1 mm in stainless and structural steels. Its HSSE high-speed steel construction with 5% cobalt provides a hardness of 66 HRC and high resistance to cutting zone temperatures up to 650°C. Form C with straight flutes allows tapping of both through holes and blind holes without changing tools. The 6H tolerance in accordance with DIN 374 guarantees dimensional repeatability. The M28x1 machine tap for through holes and blind holes is intended for toolrooms and CNC machining center operators.
Key benefits of the M28x1 general-purpose tap
- Durability and heat resistance thanks to HSSE steel with 5% cobalt, which retains its cutting properties at temperatures up to 650°C in the contact zone with the workpiece material
- Compliance with DIN 374 for metric fine threads confirms standardized dimensions and full compatibility with European toolholding systems
- Precision to tolerance class 6H guarantees the dimensional accuracy required in the production of pneumatic components and high-quality industrial valves and fittings
- Compatibility with ER32 holders and tapping chucks with axial compensation for synchronous tapping on CNC and conventional machines
- Pitch 1 mm provides the maximum number of threads per unit length, increasing connection tightness and thread load capacity in precision components
- M28x1 HSSE machine tap with form C evacuates chips properly in through holes and blind holes without the risk of thread damage
The M28x1 general-purpose machine tap is used in the production of industrial valves and fittings and pneumatic components requiring leak-tight threaded connections. Cooling with an EP emulsion at a minimum concentration of 8% extends tool life by a factor of 2-3. The tap drill diameter for the M28x1 thread is 27 mm.
Cutting data for the M28x1 HSSE INOX general-purpose machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 57-227 | 57-227 |
| MStainless steel / INOX | 5-10 | 57-114 | 57-114 |
| KCast iron | 5-15 | 57-171 | 57-171 |
| NAluminum | 10-25 | 114-284 | 114-284 |
Thread preparation M28x1
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 27 mm
3 Tapping
M28x1
✓ Done!
Tolerance 6H
Standard: DIN 374 | Chamfer: C (straight) | Application: general-purpose (through and blind holes)
Tolerance 6H — metric thread tolerance classes
| Class | Accuracy | Application | Status |
|---|---|---|---|
| 4H / 4g | High | Precision connections, hydraulics | — |
| 6H / 6g | Standard | Machine building, general-purpose | SELECTED |
| 7H / 8g | Low | Large clearance, easy assembly | — |
6H = internal thread (nut, hole) | 6g = external thread (screw)
Frequently asked questions
The M28x1 HSSE tap is suitable for austenitic stainless steels 304 and 316, structural steels up to 800 MPa, ductile cast iron, and aluminum and brass alloys. It is not recommended for hardened steels above 45 HRC.
The nominal tap drill diameter for the M28x1 thread is 27 mm. The hole tolerance range should be 26.9–27.1 mm. A hole at the lower tolerance limit produces a fuller thread profile, while one at the upper limit reduces tapping torque.
The M28x1 tap works with ER32 holders and tapping chucks with axial compensation. Synchronized heads with automatic tool change capability are recommended for CNC machines.
Product accessories
Machine tap M28x1 DIN 374/35 C HSSE Fra
Reference: 0000007296 In stock < 10 items
€57.89
€71.21 brutto
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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