Industrial customers rely on BAER
Credentials

BaerCoil HSSE Machine Tap M 8 x 1.25 STI (oversized for wire thread inserts) - ECO for through holes

€21.66*

Prices incl. VAT plus shipping costs

In stock

Same-day shipping for orders placed within 1 hour 17 min

Express shipping available

EAN 4058462104886
Item no B3511
PDF offer
Create PDF offer for this product Tip: Add multiple products to the cart and create the offer there. Logged in users get an individualized offer.
Product information

BaerCoil HSSE Machine Tap M 8 x 1.25 STI (oversized for wire thread inserts) - ECO for through holes

BaerCoil® machine taps are mainly used for thread repair or thread reinforcement in connection with wire thread inserts. With this BaerCoil® screw tap a finished thread with oversize can be cut in one operation as a holding thread for wire thread inserts of the dimension M 8 x 1.25.
The holding thread for M 8 x 1.25 thread inserts is also called STI thread (screw thread insert) or STI thread (in English Screw Thread Insert) and has an oversize so that the normal initial thread M 8 x 1.25 is restored after installation of the thread insert.

Our machine taps are powerful and reliable taps for efficient machining of threads in one operation on the machine. Machine taps are used primarily in industrial manufacturing. They are suitable for CNC machines, thread cutting machines, cordless drills and pneumatic thread cutting machines, among others. As they are characterised by high efficiency and low production costs, they are often used in series production. The thread is cut by machine in one operation.

This BaerCoil® tap can be used for through holes, as the long gate, the straight groove shape and the spiral point ensure that the chips are transported forward out of the hole

Dimensions

Diameter 8
Nominal diameter in inches 0,378
Nominal diameter in mm 9,6
Pitch 1,25
Pitch in mm 1,25
Dimension M 8 x 1,25 EG/STI

Characteristics

Product group Screw taps
Wire thread inserts - Taps
Product type BaerCoil screw taps
Thread standard M EG/STI: Metric ISO standard thread for wire thread inserts according to DIN 8140-2
Tolerance ISO2/6H mod. (ISO1/4H)
Direction Right
Standard Factory standard
Tensile strength at room temperature up to 900 N/mm² | 27.1 HRC
Material HSSE bright

Core hole diameter: 8.3 mm
Core hole diameter
8.3 mm
Bild Lochtyp: https://media.baer.tools/media/vector/86/08/96/durchgangsloch.svg
Hole type
Through hole up to 4 x D
Bild Form: https://media.baer.tools/media/vector/89/22/a4/gewindebohrer_gerade_nuten_schaelanschnitt.svg
Form / Geometry
Form B with spiral point
Bild Anschnitt: https://media.baer.tools/media/vector/59/5d/26/gewindebohrer_anschnitt.svg
Chamfer
4-5 threads
Bild Spanabfuhr
Chip removal
Chips are removed downwards in the direction of cutting
Bild Kühlung: https://media.baer.tools/media/vector/41/a7/9a/gewindebohrer_aussenkuehlung.svg
Cooling
External cooling and lubrication
Bild Material: https://media.baer.tools/media/vector/c8/8d/2f/gewindebohrer_blank.svg
Material
HSSE bright
Bild Zugfestigkeit: https://media.baer.tools/media/vector/c0/4a/39/zugfestigkeit.svg
Tensile strength at room temperature
up to 900 N/mm² | 27.1 HRC
Tolerance: ISO2/6H mod. (ISO1/4H)
Tolerance
ISO2/6H mod. (ISO1/4H)

Applications

All normal uses for thread repair and for thread reinforcement of through threads.

Technical drawing

D1 9,6 mm
D2 10,0 mm
L1 80 mm
L2 24 mm
Diameter 8
Square 8,0 mm

Application – Sample materials for taps

Unalloyed construction steels Cutting speed vc in m/min
1.0037 St 37-2 5 - 12
1.0044 St 44-2 5 - 12
1.0039 S 235JRG1+CR 5 - 12
1.0060 St 60-2 5 - 10
Free-cutting steels Cutting speed vc in m/min
1.0718 9 SMnPb 28 5 - 12
1.0721 10 S 20 5 - 12
1.0736 9 SMn 36 5 - 12
1.0726 35 S 20 5 - 10
Cast steel Cutting speed vc in m/min
1.0420 GS-38 8 - 15
1.1120 GS-20 Mn 5 5 - 15
1.5633 GS-24 Ni 8 5 - 12
1.7379 GS-18 CrMo 9 10 5 - 12
Alloyed construction steels Cutting speed vc in m/min
1.5415 15 Mo 3 5 - 12
1.5622 14 Ni 6 5 - 10
1.7335 13 CrMo 4 4 5 - 10
1.7715 14 MoV 6 3 5 - 10

Cutting speed vc [m/min] = (Outer diameter * π * speed) / 1000

Rotation speed n [1/min] = (Cutting speed in m/min * 1000) / (Outer diameter * π)

Feedrate programming [mm/min] = speed * pitch

Please note that the above cutting speeds are indicative and must be adjusted depending on lubrication and actuation.

Video instructions

Zubehör

BaerCoil HSSE Machine Tap M 8 x 1.25 STI (oversized for wire thread inserts) - PRO for blind holes

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: B3711P
€66.32*
BAER Long Tap Holder with Ratchet M 5-12 | 7/32-1/2

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: 491625020
€21.23*
BAER Short Tap Holder with Ratchet M 5-12 | 7/32-1/2

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: 491625002
€11.22*
BaerCoil HSSE Machine Tap M 8 x 1.25 STI (oversized for wire thread inserts) - ECO for blind holes

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: B3711
€21.13*
BAER Adjustable Tap Wrench - Steel NO. 2 | M 4-12 | 5/32-1/2 | G (BSP) 1/8

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: 491724020
€18.75*
BaerCoil HSSE Machine Tap M 8 x 1.25 STI (oversized for wire thread inserts) - PRO for through holes

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: B3511P
€63.02*
BaerCoil HSS Drill Bit 8.30 mm

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: 16183
€5.25*
BAER High Performance Cutting Paste 100 ml

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: SP100
€9.44*
BaerCoil HSSE-TiN Forming Tap M 8 x 1.25 STI (oversized for wire thread inserts)

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: B3611
€72.16*
BAER Adjustable Tap Wrench - PRO NO. 2 |M 4-12 | 5/32-1/2 | G (BSP) 1/8

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: 491725020
€9.59*
BaerCoil HSSG Short Machine Tap M 8 x 1.25 STI (oversized for wire thread inserts)

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: B3011-1
€9.45*
BAER Extension Sleeve for square 8.0mm

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: 491925080
€7.46*
BaerCoil HSSG Tap with pilot nose M 8 x 1.25 STI (oversized for wire thread inserts)

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: B3631
€18.77*
BaerCoil Countersink HSSG 16.5mm

In stock

Express shipping available

Same-day shipping for orders placed within 1 hour 17 min
Item no.: B9403
€14.59*

Subscribe to our newsletter

To receive the latest information and be the first to know about new products, leave us your e-mail address.

I would like to receive the newsletter of the BAER Shop, operated by BAER Tools GmbH, and be informed by e-mail about offers, trends and promotions that are offered. The storage and processing of all personal data submitted as part of the registration process is carried out exclusively by BAER Tools GmbH. In addition, the data protection information of BAER Tools GmbH applies. This consent can be revoked at any time with effect for the future at the end of each e-mail.