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| Categories | HSS Drill Bits | 
|---|---|
| Brand Name: | STARRY and OEM | 
| Model Number: | 3mm 3.2mm 4mm 5mm 6mm 8mm 10mm | 
| Certification: | ISO9000 | 
| Place of Origin: | CHINA | 
| MOQ: | 500pcs | 
| Price: | Negotiable | 
| Payment Terms: | T/T, MoneyGram | 
| Supply Ability: | 3000000/PCS Per Month | 
| Delivery Time: | 30-45days | 
| Packaging Details: | Plastic tube;Paper Color box;Plastic box;BOSCH box. | 
| Product Name: | Roll forged hss drill bit | 
| Material: | HSS-4341 | 
| Surface:: | TIN Coated | 
| Shank: | paraller shank | 
| Degree Point: | 118° | 
| Application: | Metal, steel plate | 
| Hardness: | 62-64HRC | 
| Service: | OEM | 
| Logo: | Stamping or Laser Marking | 
| Produce Process: | Roll forged(half ground) | 
| Company Info. | 
| Jiangsu Xingrui Tools CO.,LTD | 
| Verified Supplier | 
| View Contact Details | 
| Product List | 
HSS4341 Twist Drill Bit , Roll Forged Half Ground Tin Coated Titanium Drill Bits
STARRY Drill bit can drilling holes on aluminium,plastic,wood,copper,iron.
Produced by hot roll-forged technology. The high twisting moment and elasticity enable using by hand drilling devices and conventional machinery for low alloyed steel, cast, ferrous and non-ferrous metals.

DIN338 HSS-4241 Roll Forged Twist Drill Bits
| Type: | HSS twist drill bit | 
| Shank: | Straight Shank | 
| Surface Finish: | Tin coated | 
| Standard: | DIN338 | 
| Hss Material: | 4341 | 
| Product Technic: | Roll Forged/Half Ground | 
| Ponit Angle: | 118° / 135° or Split point | 
| Payment Term: | TT,or Western union | 

we can supply different kinds material for you:
| HRC | CHEMICAL COMPOSITION(%) | International | DIN | ||||
| C | W | Mo | Cr | V | |||
| 60-62 | 0.9-1.0 | 1.5-2.5 | 0.5-1.2 | 3.8-6.0 | 0.5-1.0 | T-4241 | / | 
| 62-65 | 0.88-0.98 | 3.5-4.5 | 2.5-3.5 | 3.8-4.4 | 1.3-1.7 | 4341 | W4 | 
| 63-66 | 0.77-0.87 | 8.5-9.5 | 2.7-3.3 | 3.8-4.4 | 1.3-1.7 | 9341 | W9 | 
| 63-66 | 0.8-0.9 | 5.5-6.75 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | 6542 | M2 | 
| 64-67 | 0.9-0.95 | 5.5-6.5 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | Co5% | M35 | 
| 66-68 | 1.05-1.15 | 1.15-1.85 | 9.0-10.0 | 3.5-4.25 | 0.95-1.35 | Co8% | M42 | 

| d1 | L1 | L2 | 
|---|---|---|
| mm | mm | mm | 
| 1,5 | 49 | 24 | 
| 2,0 | 49 | 24 | 
| 2,5 | 57 | 30 | 
| 3,0 | 61 | 33 | 
| 3,3 | 65 | 36 | 
| 3,5 | 70 | 39 | 
| 4,0 | 75 | 43 | 
| 4,2 | 75 | 43 | 
| 4,5 | 80 | 47 | 
| 5,0 | 86 | 52 | 
| 5,5 | 93 | 57 | 
| 6,0 | 93 | 57 | 
| 6,5 | 101 | 63 | 
| 6,8 | 109 | 69 | 
| 7,0 | 109 | 69 | 
| 7,5 | 109 | 69 | 
| 8,0 | 117 | 75 | 
| 8,5 | 117 | 75 | 
| 9,0 | 125 | 81 | 
| 9,5 | 125 | 81 | 
| 10,0 | 133 | 87 | 
| 10,5 | 133 | 87 | 
| 11,0 | 142 | 94 | 
| 11,5 | 142 | 94 | 
| 12,0 | 151 | 101 | 
| 12,5 | 151 | 101 | 
| 13,0 | 151 | 101 | 
| 13,5 | 160 | 108 | 
| 14,0 | 160 | 108 | 
| 14,5 | 169 | 114 | 
| 15,0 | 169 | 114 | 
| 15,5 | 178 | 120 | 
| 16,0 | 178 | 120 | 
Inch Size are available ( ANSI B94.11M-1993 Standard ):
Fractional Size: 1/16" ~ 1/2"
Letter Size: A ~ Z
Wire Gage Size: 1# ~ 60#
Set are available:
1/16" ~ 1/4" x 13 pcs set
1/16" ~ 3/8" x 21 pcs set
1/16" ~ 1/2" x 29 pcs set
115 pcs set
STARRY Drill bit can drilling holes on aluminium,plastic,wood,copper,iron.
Produced by hot roll-forged technology. The high twisting moment and elasticity enable using by hand drilling devices and conventional machinery for low alloyed steel, cast, ferrous and non-ferrous metals.

1. 5/10 pieces packind in PVC bag, then in white paper box, then in carton. ( default bullk packing)

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