Machine tap, uncoated, Rc: 1/8-28

Article no.: 138120 1/8-28
Copy
Price per 1 Piece
plus VAT at the current rate Prices plus delivery costs
Individual prices for business customers after login.
Do you want to order more than one article? To quick entry
In stock Available in 3-4 working days

Select article variation and quantity

Rc Unit price incl. VAT

Availability

  • Thread type: Rc
  • Flank angle: 55
  • Tool material: HSS E
  • Standard: DIN 2181
  • Thread standard: DIN EN 10226-2

Add to wishlist

Share this product

or copy this link

Product details

Technical Data

Thread size Rc1/8-28
Coating uncoated
Thread type Rc
Flank angle 55 degrees
Tool material HSS E
Standard DIN 2181
Thread standard DIN EN 10226-2
Taper lead form C
Taper ratio 1:16
Shank Plain shank with h9
Through-coolant no
Application for type of drilling Blind hole; Through hole
Cutting direction right-hand
Thread pitch 0.907 mm
Threads per inch 28
Overall length L 63 mm
Shank ⌀ Ds 7 mm
Shank square □ 5.5 mm
Tapping hole ⌀ A 8.15 mm
Tapping hole ⌀ B 8.1 mm
Thread gauge ⌀ Dmax JS11 8.57 mm
Tapping hole minimum depth 11.1 mm
Thread ⌀ 9.72 mm
Type of threading tool Machine tap for conventional machining
Number of clamping slots 5
Colour ring without
Number of cutting edges Z 5
Thread depth 41 mm
Type of product Tap

Identification & Classification

Article number 138120 1/8-28
Copy
EAN / GTIN 4045197585585
Copy
Manufacturer number 138120 1/8-28
Copy
Manufacturer Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com

Application Table

Alu plastics
suitable for / [m/min]
N
ISO code:
9
Aluminium (short chipping)
suitable for / [m/min]
N
ISO code:
9
Steel < 500 N/mm²
suitable for / [m/min]
P
ISO code:
7
Steel < 750 N/mm²
suitable for / [m/min]
P
ISO code:
6
Steel < 900 N/mm²
suitable for / [m/min]
P
ISO code:
5
GG(G)
suitable for / [m/min]
K
ISO code:
5
CuZn
suitable for / [m/min]
N
ISO code:
9
Oil
suitable for / [m/min]
 
wet maximum
suitable for / [m/min]
 

Description

Version:

The short shank overhangs less and hence is more stable.

Application:

For use as machine tap or for cleaning existing threads by hand. Tapered Whitworth pipe thread (BSPT) to ISO 7/1 and BS21, for joints with sealant in the thread. See the table for the specified minimum size of the tapping hole.

Recommendation:

Tapping hole ⌀ A:
Pre-drill a plain hole without using a reamer. Variant A can be used if there is no risk of sealing problems.
Tapping hole ⌀ B:
Pre-drill a plain hole and then ream it using a 1:16 taper reamer (see No. 162650). The taper bore ⌀ can then be checked laterally by reference to the Dmax check dimension (see table). Variant B for drilling the tapping hole offers the best process reliability for the tapping operation and at the same time ensures the most reliable seal in the thread.

Downloads & documents

Direct purchase

Add articles directly to the cart:

Login

Your contact person
To shopping cart