Allied Maching & Engineering Corp.
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Frequently Asked Questions

Q: I need a 1-1/16" diameter Super Cobalt, TiN coated T-A Insert. What is the part number?
Allied utilizes smart item numbers in which each character has a specific meaning. The item number for the question above is 152T-0102 where 1 = T-A drill insert, 5 = Super Cobalt, 2 = Series 2, T = TiN Coating, 01 = 1” in whole numbers, 02 = diameter in 32nds, 2/32 = 1/16, Therefore, 0102 = 1-1/16” diameter. Additional references are available on pages 4-6 of the Allied Drilling Products Catalog.
Q: Is there a minimum order?
No, there is no minimum dollar value or quantity for your order except for inserts available in standard two-piece packages and some accessory items.
Q: Can metric inserts be used in standard inch holders?
Yes, all inserts within a series are interchangeable in holders of the same series.
Q: Can I order using my credit card?
Yes, we accept credit card payments from Allied authorized distributors using MasterCard, VISA, American Express, Diner’s and Discover Card.
Q: How can I check a delivery date or a tracking number?
An authorized Allied Distributor may check delivery dates of purchase orders simply by entering your purchase order number, the Allied order number, or the item number on-line. Please see the Due Date Utility located under Distributor Utilities.
Q: What is the cutoff time to ship an order?
We guarantee same-day shipment of all one-day and two-day delivery services up until 5:00 PM eastern standard time.
Q: Who is the Sales Manager for my area?
Please see the Allied Regional Sales Manager Map
Q: What items are sold in standard two-piece packages?
All T-A® series Y, Z, 0, 1, and 2 inserts are sold in two-piece packages. Series 3 and larger are sold in single quantities. Reference the T-A® Drill Insert Item Number Chart in the AMEC on-line catalog for series identification.
Q: What is the diameter range of special drill inserts?
Allied manufactures drill inserts within the diameter range of 0.374 to 4.500 inches. Diameters outside of this range can be produced pending evaluation of the request. Please see the Special Tools Design Section of the on-line catalog for details.
Q: What are the benefits of the 0.5, 1.5, and 2.5 series holders?
Series 0.5, 1.5 or 2.5 holders have a significantly higher inertial strength over the series 0, 1, or 2 holders. Higher inertial strength provides an increased level of rigidity during use.
Q: How do I know what inserts fit into the series 0.5, 1.5, and 2.5 holders?
The Drill Insert Range for each series 0.5, 1.5 or 2.5 holder is shown in the holder section of the AMEC T-A® Drilling Products catalog. Insert diameters are also listed in the tables for our T-A® Drill Inserts.
Q: Does my holder require a Rotary Coolant Adapter (RCA)?
It depends on the application of the tool. Standard holders with a Morse taper shank have a seat for an RCA. If the tool is being used in a rotating application and the customer needs to provide coolant flow from an external coolant line, then an RCA is required.
Q: What is the difference between a T-A® and HP Drill?
T-A® Drills and Holders are a unique design that belong exclusively to Allied. HP drills interchange with all manufacturers’ Universal Style holders that meet ANSI B94.94 -1975 TYPE 1 specifications.
Q: Which product would you recommend?
T-A® Drill Inserts are better because their lower cost per hole and performance balance the cost of T-A® Holders. HP drills are recommended when a customer already has a Universal Style holder and they are drilling a limited number of holes.
Q: Does AMEC believe in T-A® and HP products enough to offer customer testing?
Yes, every chance we get! A Guaranteed Tool Test application must be submitted prior to testing to ensure the test environment is properly specified. After reviewing the customer’s information, Allied’s Engineering Department will recommend feeds and speeds before the tools are shipped for testing. Allied requires a comprehensive test report after tool tests are completed, regardless of results.
Q: Why have both T-A® and HP products?
Both products have distinct advantages. Allied T-A® Drill Inserts and Holders offer the lowest cost and highest performance drilling solutions. HP Drill Inserts have many of the same performance benefits as T-A® Drill Inserts but cover a different size range. (Universal Style Holders accept a wide variety of both Universal and HP type inserts, both available from stock.)
Q: Can Allied T-A® and HP drills offer a more effective drilling solution than oil hole twist drills, standard twist drills, or indexable carbide drills?
Yes! Oil hole or standard twist drills can be replaced with either T-A® or HP products. Indexable carbide drills should be replaced when horsepower, hole depth, hole size or insert breakage is a problem. Indexable carbide drills limit machine performance because they require stricter operating specifications. Allied T-A® and HP drills can be run at a wider variety of speed and feed rates to best utilize a customer’s machine capacity. Please refer to the Allied Recommended Speeds and Feeds chart for a performance comparison.
Q: Are Allied drills suitable for coring applications?
Yes, however, it is not normally recommended. Allied drills are center cutting and designed to drill from solid material. Pilot holes and spot drilling are not typically required. If spot drilling is performed, a tool with an included angle greater than or equal to that of the Allied drill, should be used. This allows the chisel point of the Allied drill to contact the work piece first, thus providing a stable entry.
Q: Is it true that peck drilling is not recommended with AMEC drills?
No, peck drilling can be utilized if necessary. A lack of chip control or difficulties with chip evacuation due to low coolant pressure or volume indicates peck drilling may be required. However, Allied offers a wide variety of tool geometries to provide chip formation in a wide variety of materials, eliminating the need for peck drilling in most applications.