BAER HSSG Hand Tap Finishing (No. 1) UNF 1/2 x 20 - LEFT

€19.30

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EAN 4058462068522
Product information

BAER HSSG Hand Tap Finishing (No. 1) UNF 1/2 x 20 - LEFT


The left-hand tap finishing tap (No. 3) enables you to cut a finished left-hand thread. It is advantageous to shape the thread beforehand with a taper tap (No. 1) in order to better distribute the cutting power. However, the finishing tap (No. 3) can also be used without a pre- or intermediate tap (No. 2) as it already cuts a fully usable thread. However, the short chamfer makes it more difficult to get straight into the hole and the tool life time is reduced compared to using multi-part hand tap sets
Compared to the machine tap, the hand tap has a short shank. This allows you to cut internal thread by hand without jamming and can be operated with tap wrenches, tool ratchets or other holding tools with square drive.
The thread can be cut into a pre-drilled core hole. Due to the short chamfer of the finish tap, it can be used universally for through holes and blind holes.
A left-hand thread is tapped counterclockwise. The left-hand tap or left-hand screw tap is also operated counterclockwise.

Dimensions

Diameter 1/2
Nominal diameter in inches 0,5
Nominal diameter in mm 12,7
Pitch 20
Pitch in mm 1,27
Dimension UNF 1/2 x 20
Square 7 mm

Characteristics

Product group Screw taps
Product type Hand tap sets
Thread standard UNF: American Fine Unified National thread according to ANSI B1.1
Tolerance 2B
Direction Left
Standard DIN 352
Tensile strength at room temperature up to 900 N/mm² | 27.1 HRC
Material HSSG bright

Schematic representation of Core hole diameter
Core hole diameter
11.5 mm
Schematic representation of Bild Lochtyp
Hole type
Through hole and blind hole up to 2 x D
Schematic representation of Bild Form
Form / Geometry
Form C straight fluted
Schematic representation of Bild Anschnitt
Chamfer
2-3 threads
Schematic representation of Bild Spanabfuhr
Chip removal
Rarely occurs. Chips remain in flutes.
Schematic representation of Bild Kühlung
Cooling
External cooling and lubrication
Schematic representation of Bild Material
Material
HSSG bright
Schematic representation of Bild Zugfestigkeit
Tensile strength at room temperature
up to 900 N/mm² | 27.1 HRC
Schematic representation of Tolerance: 2B
Tolerance
2B

Applications

  • Materials with good machinability up to 900 N/mm²
  • Unalloyed and low-alloy steels

Technical drawing

Technical drawing hand tap with overflow shank
D1 UNF 1/2 x 20
D2 9 mm
L1 75 mm
L2 24 mm
Diameter 1/2
Square 7 mm

Application – Sample materials for taps

Unalloyed construction steels
1.0035S185 (St33)
1.0036S235JRH
1.0038RSt37-2
1.0039S235JRG1+CR
1.0044St44-2
1.0060E335 (St60-2)
1.0116St37-3
1.0570St 52-3
Alloyed construction steels
1.541515Mo3
1.542316Mo5
1.562214Ni6
1.733513CrMo44
1.733716CrMo44
1.771514MoV63
Free-cutting steels
1.07119S20
1.07159SMn28
1.071811SMnPb30
1.072110S20
1.072315S20
1.072635S20
1.07379SMnPb36
1.075860SPb20
Case-hardening steels
1.0401(C15)
1.701617CR3
1.713116MnCr5
1.591915CrNi6
Quenched and tempered steels unalloyed
1.0402C 22
1.1151C22E (Ck22)
1.0503C 45
1.1191C45E (Ck45)
Cast steel
1.0420GS-38
1.5419GS-22 Mo 4
1.6750GS-20 NiCrMo3 7
1.7357 GS-17 CrMo 5 5
Malleable cast iron
0.8145EN-GJMB 450-6
0.8170EN-GJMB 700-2
0.8045EN-GJMW-450-7
0.8055EN-GJMW-550-4
Pure copper low-alloyed
2.0240CuZn15
2.0265CuZn30
Brass short-chipping
2.0401CuZn39Pb3
Brass long-chipping
2.0321CuZn37
2.0335CuZn36
2.0360CuZn40
Aluminum cast Si > 5-12 %
3.2161G-AlSi8Cu3
3.2163G-AlSi9Cu3
3.2381G-AlSi10Mg
3.2583G-AlSi12(Cu)
Lamellar graphite cast iron
0.6010EN-GJL 100 (GG-10)
0.6020EN-GJL 200 (GG -20)
0.6025EN-GJL 250 (GG-25)
0.6030EN-GJL 300 (GG -30)
Copper-tin alloy (bronze) short-chipping
2.1090.01G-CuSn7ZnPb
2.1086.01G-CuSn10Zn
2.1097G-CuSn5ZnPb
Pure copper, low-alloyed copper
2.0240CuZn15
2.0265CuZn30

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