• Jiangsu Jinlei Electrical Technology Co., LTD.-HSS Drill Set,HSS Bright Finish drill,HSS Taper Shank Drill,HSS Twist Drill,12-inch Reduced Shank Twist Drill-Contact Us
  • Jiangsu Jinlei Electrical Technology Co., LTD.-HSS Drill Set,HSS Bright Finish drill,HSS Taper Shank Drill,HSS Twist Drill,12-inch Reduced Shank Twist Drill-About Us
  • Jiangsu Jinlei Electrical Technology Co., LTD.-HSS Drill Set,HSS Bright Finish drill,HSS Taper Shank Drill,HSS Twist Drill,12-inch Reduced Shank Twist Drill-Products
Home >> HSS Straight shank Twist Drills
Sku:JL-021

HSS Straight shank Twist Drills

Description:

The values indicated in the relevant dimensional standards apply in respect of the diameter of HSS Straight shank Twist Drills,precision twist drill bits,hss twist drill.


  • Additional Description

Product Details:

  • Place of Origin:
    Jiangsu, China (Mainland)
  • Brand Name:
    OEM
  • Type:
    Twist Drill Bit
  • Material:
    High Speed Steel
  • Use:
    Metal Drilling
  • Standard:
    DIN338
  • Payment & Shipping Terms:
    FOB Price
  • Minimum Order Quantity:
    500 Piece/Pieces
  • Port:
    Shanghai
  • Packaging Details:
    inner - PVC bag; outer - export carton; Pallet is available.
  • Delivery Time:
    30 - 45 days
  • Payment Terms:
    L/C,T/T
  • Supply Ability:
    5000000 Piece/Pieces per Month

Detailed Product Description

1. name: hss straight shank twist drill bit
2. manufacturing process: roll forged
3. finish: bright shank black flute

Main technical conditions of twist drill
Dimensions

1. Drill diameter - The values indicated in the relevant dimensional standards apply in respect of the diameter of twist drills.
    • Test point: On the lands at the corners
    • Testing equipment: micrometer
HSS Straight shank Twist Drills
Test point of the drill diameter

2. Tapering of diameter - The diameter of twist drills usually reduces from the drill tip towards the shank in the area of the flutes.
    • Test values: The taper on diameter amounts to 0.02 to 0.08mm over a length of 100mm.
    • Test point: At the outside diameter on the land.
    • Testing equipment: micrometer and indicating measuring instruments.

3. parallel shank - Tolerance for shank diameter f11, Tolerance for roundness and parallelism 0.02mm for the shank length.

4. Length - The tolerance of length for the total length corresponds for the degree of accuracy "very coarse" according to DIN standards. The flute lengths given in the relevant dimensional stands are minimum dimensions.

5. Point angle
    • Test value: σ=118°; σ=135°
    • Test point: At the cutting edges
    • Testing equipment: Universal bevel protractor indicating measuring instruments.
HSS Straight shank Twist Drills
point angle

Materials and hardness
    • Size:3-25mm
    • Materials – M2(W6Mo5 Cr4V2),W9Mo3 Cr4V,W4Mo3 Cr4V,Cr15,45#,etc
    • Hardness - HSS HRC63-66; HSSCo HRC64-68
    • Test point: On outside diameter on the land or adjacent relieved land.
    • Test equipment: Hardness Tester.
    • Production standard:DIN338,ASME B94-11M-1993,GB/T6135.3-1996

Marking
    • Twist drills with diameter 3mm and upwards shall be marked with:
a. Diameter;
b. Material: (HSS, HSSCo);
c. Name or mark of manufacturer.
d. Additional and/or differing marking by agreement.

Web Thinning
    • Without thinning
1. Suitable for drill of general purpose.
2. Thanks to thin web thickness, web thinning is not need.
3. This without web thinning type is applied to design of drills for mild steel, alloy steels, cast iron, stainless steel, titanium, inconel, etc. and conventional cutting conditions.
HSS Straight shank Twist Drills
    • Type C thinning (DIN1412 FORM C, SPLIT POINT)
1. Because split point enables good centering when drilling and breaks the chips, chip removals is easy.
2. Suitable for drill design in high hardened tough materials, i.e, heat treated steel, titanium alloy, stainless steel, incoroy inconel, nimonic, etc.
HSS Straight shank Twist Drills
HSS Straight Shank Twist Drill (Roll forged)
HSS Straight shank Twist Drills

D L1 L2 D L1 L2 D L1 L2
0.2 19 2.5 2.0 49 24 6.2 101 63 11.4 142 94
0.22 19 2.5 2.05 49 24 6.3 101 63 11.5 142 94
0.25 19 3 2.1 49 24 6.4 101 63 11.6 142 94
0.28 19 3 2.15 53 27 6.5 101 63 11.7 142 94
0.3 19 3 2.2 53 27 6.6 101 63 11.8 142 94
0.32 19 4 2.25 53 27 6.7 101 63 11.9 151 101
0.35 19 4 2.3 53/td> 27 6.8 109 69 12 151 101
0.38 19 4 2.35 53 27 6.9 109 69 12.1 151 101
0.4 20 5 2.4 57 30 7 109 69 12.2 151 101
0.42 20 5 2.45 57 30 7.1 109 69 12.3 151 101
0.45 20 5 2.5 57 30 7.2 109 69 12.4 151 101
0.48 20 5 2.55 57 30 7.3 109 69 12.5 151 101
0.5 22 6 2.6 57 30 7.4 109 69 12.6 151 101
0.52 22 6 2.65 57 30 7.5 109 69 12.7 151 101
0.55 24 7 2.7 61 33 7.6 117 75 12.8 151 101
0.58 24 7 2.75 61 33 7.7 117 75 12.9 151 101
0.6 24 7 2.8 61 33 7.8 117 75 13 151 101
0.62 26 8 2.85 61 33 7.9 117 75 13.1 151 101
0.65 26 8 2.9 61 33 8 117 75 13.2 151 101
0.68 28 9 2.95 61 33 8.1 117 75 13.3 160 108
0.7 28 9 3 61 33 8.2 117 75 13.4 160 108
0.72 28 9 3.1 65 36 8.3 117 75 13.5 160 108
0.75 28 9 3.2 65 36 8.4 117 75 13.6 160 108
0.78 30 10 3.3 65 36 8.5 117 75 13.7 160 108
0.8 30 10 3.4 70 39 8.6 125 81 13.8 160 108
0.82 30 10 3.5 70 39 8.7 125 81 13.9 160 108
0.85 30 10 3.6 70 39 8.8 125 81 14 160 108
0.88 32 11 3.7 70 39 8.9 125 81 14.25 169 114
0.9 32 11 3.8 75 43 9 125 81 14.25 169 114
0.92 32 11 3.9 75 43 9.1 125 81 14.75 169 114
0.95 32 11 4 75 43 9.2 125 81 15 169 114
0.98 34 12 4.1 75 43 9.3 125 81 15.25 178 120
1 34 12 4.2 75 43 9.4 125 81 15.5 178 120
1.05 34 12 4.3 80 47 9.5 125 81 15.75 178 120
1.1 36 14 4.4 80 47 9.6 125 81 16 178 120
1.15 36 14 4.5 80 47 9.7 133 87 16.25 184 125
1.2 38 16 4.6 80 47 9.8 133 87 16.5 184 125
1.25 38 16 4.7 80 47 9.9 133 87 16.75 184 125
1.3 38 16 4.8 86 56 10 133 87 17 184 125
1.35 40 18 4.9 86 52 10.1 133 87 17.25 191 130
1.4 40 18 5 86 52 10.2 133 87 17.5 191 130
1.45 40 18 5.1 86 52 10.3 133 87 17.75 191 130
1.5 40 18 5.2 86 52 10.4 133 87 18 191 130
1.55 43 20 5.3 86 52 10.5 133 87 18.25 198 135
1.6 43 20 5.4 93 57 10.6 133 87 18.5 198 135
1.65 43 20 5.5 93 57 10.7 133 87 18.75 198 135
1.7 43 20 5.6 93 57 10.8 133 87 19 198 135
1.75 46 22 5.7 93 57 10.9 142 94 19.25 205 140
1.8 46 22 5.8 93 57 11 142 94 19.5 205 140
1.85 46 22 5.9 93 57 11.1 142 94 19.75 205 140
1.9 46 22 6 93 57 11.2 142 94 20 205 140
1.95 49 24 6.1 101 63 11.3 142 94      

 

NOTE: Our company can supply most kinds of drill bits, such as hss straight shank twist dirll bit, hss reduced shank twist drill bit, Taper shank twist drill bit, hss hex shank twist drill drill bit, twist drill bit set, electric hammer masonry drill bits (including sds plus bit, sds max bit), spline shank hammer drill bit, straight shank masonry drill bit, wood working drill bit and so on.

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