Machine tap 1/4-18

CA$17.31

BRAND:HOLEX

–>Data Sheet

  • Thread type: NPT
  • Flank angle: 60 °
  • Tool material: HSS E
  • Standard: Manufacturer’s standard
  • Thread standard: ANSI B 1.20.1
Order #: 138090 1/4-18 Category: Tag:

Availability: Ships in 2 weeks

Choose: 1/4-18

Description

Version:

Sturdy version, with straight flutes.

Application:

Tapered pipe threads (NPT) to ANSI B1.20.1, for threads with sealants. 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.
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.

Machine tap 1/4-18

Additional information

EAN / GTIN

4045197585523

Brand

HOLEX

Article number

138090 1/4-18

Thread size

1/4-18 NPT

Coating

uncoated

Thread type

NPT

Flank angle

60 °

Tool material

HSS E

Standard

Manufacturer’s standard

Thread standard

ANSI B 1.20.1

Taper lead form

C

Taper ratio

1:16

Shank

Plain shank with h9

Through-coolant

no

Application for type of drilling

for blind holes and through holes

Cutting direction

right-hand

Thread pitch

1.411 mm

Threads per inch

18

Overall length L

100 mm

Shank ⌀ Ds

11 mm

Shank square □

9 mm

Tapping hole ⌀ A

11.1 mm

Tapping hole ⌀ B

10.75 mm

Thread gauge ⌀ Dmax + 0.05

11.36 mm

Tapping hole minimum depth

17.5 mm

Thread ⌀

13.616 mm

Type of threading tool

Machine tap for conventional machining

Number of clamping slots

5

Thread depth

25.84 mm

Type of product

Tap

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