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| Weight |
Origin Zip Code |
| 2.50 Pounds |
06111 |
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156 Pane Road
Newington, CT 06111 | |
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| (6) New 15/32" Cobalt STUB Drills - Precision Twist Drill. Made in the U.S.A. Fractional COBALT STUB Drill (135 Deg. is the standard, but #53 - #60 are not split point). Manufactured by Precision Twist Drill. Manufactured to National Aerospace standard 907. Made of heat resistant cobalt, they display higher red hardness which permits speeds up to 30% greater than high speed steel drills and are especially effective in drilling tough, high tensile strength materials like PH stainless steel, inconel, and titanium. The 135 Deg. split point is self-centering and reduces thrust, but #53 - #60 have the standard point. Technical Specification: - SIZE : 15/32"
- DECIMAL EQUIV. : .4688
- FLUTE LENGTH : 2-1/8"
- OVER ALL LENGTH : 3-5/8"
FACTORS THAT INFLUENCE DRILLING: When selecting or designing drills for today's materials and equipment, there are a number of factors that will influence your choices. These choices will determine the success or failure of the drill. Here are the three basic factors to consider: 1. Depth of Hole 2. Feeds and Speeds 3. Fixturing 1) Depth of Hole: In selecting a drill, one of the factors to consider is hole depth. The type of drill to apply will be determined by drill design. In sonsidering hole depth, four drill design features require examination. These include: Web Thickness Web Increase Flute Form Point Style and Geometry 2) Feeds and Speeds: In Calculting feeds and speeds, consider the following: Material - Material will determine the surface feet or revolutions per minute (RPM's). Ductility of Material - Ductility of the material will determine the feed rate for ease of chip formation. BHN Briness Hardness - Hardness along with ductility will determine the base tool material for the drill. 3) Fixturing: Three elements of fixturing are important to successful drill performance. These include: rigidity, clearance for chips and passage for cutting fluids. A)Rigidity - With regard to rigidity, ask the following questions: Does the part move in the fixture? Is the fixture mounted properly? Does the spindle have axial or radial play? B)Clearance for Chips - Chip clearance is critical and the following needs to be assessed: Is there sufficient room for chip evacuation? Is the bushing the proper length? (Approximately 60% of drill lead) Is the bushing positioned on the part or is there clearance between the bushing and part to allow for chip evacuation? C)Passages for Cutting Fluids - With regard to the use of cutting fluids, the following two inspections need to be made: Are there sufficient coolant lines? Are the coolant lines directed to the proper locations? |
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| Shipping Info |
Click to Calculate Shipping
Weight : 2.50 Pounds
Inventory # : PTD-STUB-15/32 |
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- All orders upto 150 lbs. can be shipped via Fedex (Fedex Express/Corporation), UPS (United Parcel Service Inc.) or USPS (United States Postal Service).
You can check or calculate the shipping charge here: (Source Zip Code 06111)
- Orders above 150 lbs. must be shipped via a freight carrier. Check out:
All estimates are subject to additional charges depending on the area in which you are located. The carriers will assess an extra charge if delivery location is in a residential area and/or the services of a lift gate are required.
- Tool Buyers Network encourages buyers who wish to use their own FedEx and UPS account. Just e-mail us at shoptoolauctions@aol.com or include account # with the payment.
- Handling Fees will apply to all UPS, FedEx & USPS shipments.
- Domestic: $2.00
- Canada & Mexico: $3.00
- International: $4.75
- Delicate (eg. Digital Indicator or Caliper), Expensive (Precision Tools) & Large Items / Listings (such as Grinding Wheels, Micrometers Sets and other Large Lots) will require special handling & charges will be determined according to the weight & dimension of the items.
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- Note: PayPal E-mail address or account name is support@toolbuyers.com
- Mailing Information for (Cashier Checks, Personal Checks & Money Orders)
Attn: Ebay Sales Dept.
156 Pane Road
Newington, CT 06111
Phone: 1-888-474-1300
Fax: 1-888-474-5071
- Toll Free Phone Number: 1-888-474-1300 for buyers to call with credit card information.
- 6% Sales tax will automatically be added for Connecticut Bidders.
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