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Thread cutting tools 238

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Through-hole machine tap

Design: HSS-E, DIN 374, Type N, with chamfered form B (4-5 threads). Application: Universal taps with a broad range of UNF thread, unified fine thread, ANSI B1.1.

Tol. 2B

Type N

≈DIN 374

UNF

HSS-E

60°

4–5

Cutting Tools 1

≤ 3xd

B

steam

Steels up to 850 N/mm 2

Steels up to 1000 N/mm 2

Steels up to 1400 N/mm 2

Hard machining over 60 HRC

Ti steels, Ti alloys, special steels

Stainless and acid- resistant steels (INOX)

Steels up to 42 HRC

Steels up to 52 HRC

Steels up to 56 HRC

Steels up to 60 HRC

Copper, brass, bronze

Cast iron materials

Al, Al and Mg alloys

Order No. 1658

15

12

4

10

2

10

15

15

1658

Thread

Order No.

Threads

Thread ∅

Total length

Shank ∅

Square shank

Core hole ∅

inch

per inch

mm

mm 56 56 70 80 90 100

mm 2.2 2.5 3.5 4.5 7.0 12.0

mm

mm

steam

0000 0002 0001 0005 0009 0017

UNF No.4 UNF No.6 UNF No.10

19.70 19.70 19.70 24.20 26.30 44.30 (W163)

48 40 32 28 24 18

2.845 3.505 4.826 6.350 9.525 15.875

–

2.40 2.95 4.10 5.50 8.50 14.50

2.1 2.7 3.4 5.5 9.0

UNF 1/4 UNF 3/8 UNF 5/8

Blind hole machine tap

Design: HSS-E, DIN 374, Type N, with chamfered form C (2–3 threads). Application: Universal taps with a broad range of UNF thread, unified fine thread, ANSI B1.1.

≈DIN 374

Tol. 2B

Type N

UNF

HSS-E

60°

2–3

≤ 3xd

40°

C

steam

Steels up to 850 N/mm 2

Steels up to 1000 N/mm 2

Steels up to 1400 N/mm 2

Hard machining over 60 HRC

Ti steels, Ti alloys, special steels

Stainless and acid- resistant steels (INOX)

Steels up to 42 HRC

Steels up to 52 HRC

Steels up to 56 HRC

Steels up to 60 HRC

Copper, brass, bronze

Cast iron materials

Al, Al and Mg alloys

Order No. 1659

12

10

6

10

15

15

1659

Thread

Order No.

Threads

Thread ∅

Total length

Shank ∅

Square Shank

Core hole ∅

inch

per inch

mm

mm 56 56 70 80 90 100

mm 2.2 2.5 3.5 4.5 7.0 12.0

mm

mm

steam

0000 0002 0001 0005 0009 0017

UNF No.4 UNF No.6 UNF No.10

22.20 18.50 17.25 20.50 22.20 46.00 (W163)

48 40 32 28 24 18

2.845 3.505 4.826 6.350 9.525 15.875

–

2.40 2.95 4.10 5.50 8.50 14.50

2.1 2.7 3.4 5.5 9.0

UNF 1/4 UNF 3/8 UNF 5/8

1/220