BAER HSSG Hand Tap Intermediate (No. 2) BSW 1/8 x 40 - LEFT

€8.75

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EAN 4058462082771
Item no 210302001-2
Product information

BAER HSSG Hand Tap Intermediate (No. 2) BSW 1/8 x 40 - LEFT


The left-hand tap intermediate tap (No. 2) allows you to shape a left-hand thread before finishing it with the finishing tap (No. 3). The advantage of pre-cutting a thread with the intermediate tap (No. 2) is that the cutting forces on the subsequent finishing tap (No. 3) are reduced. The intermediate tap (No. 2) is marked with two rings and removes approx. 85 percent of the thread profile. Because no complete thread profile is cut, the thread is not yet usable. Only when the finishing tap (No. 3) completes the thread in the last process is it fully usable. By dividing the work between two or three taps, it is easier to cut a straight and clean thread by hand.
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 in a pre-drilled core hole.
A left-hand thread is tapped counterclockwise. The left-hand tap or left-hand screw tap is also operated counterclockwise.

Dimensions

Diameter 1/8
Nominal diameter in inches 0,125
Nominal diameter in mm 3,175
Pitch 40
Pitch in mm 0,64
Dimension BSW 1/8 x 40
Square 2,7 mm

Characteristics

Product group Screw taps
Product type Hand tap sets
Thread standard BSW: British Whitworth standard thread according to BS 84
Tolerance medium
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
2.55 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 D straight fluted
Schematic representation of Bild Anschnitt
Chamfer
3.5-5 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: medium
Tolerance
medium

Applications

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

Technical drawing

Technical drawing hand tap with reinforced shank
D1 BSW 1/8 x 40
D2 3,5 mm
L1 40 mm
L2 12 mm
Diameter 1/8
Square 2,7 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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