A-A-517
September 25, 1979
COMMERCIAL ITEM DESCRIPTION
DRILL, TWIST, 1/4-INCH SHANK
The General Services Administration has authorized the use of this
Commercial Item Description
This commercial item description covers 1/4-inch shank twist drills assigned National Stock Numbers (NSNs) as listed below.
Salient characteristics:
Split point.
Drill point angle 135o + 5o.
MI, M2, M7, or M10 high speed material.
Hardness of the fluted portion Rockwell C 63-66.
Corrosion resistant surface or black oxide treated on all surfaces except the point and margin.
The unfluted portion of the drill permanently and legibly marked with the manufacturer’s identification, drill size, “HSS” or “High Speed.”
Overall length tolerance shall be + 1/4 inch.
Furnished in the following sizes and lengths:
|
NSN |
Dimensions |
|
5133-00-241-5787 |
9/32 inch diameter, 3 19/32 inch overall length |
|
5133-00-241-5944 |
5/16 inch diameter, 3 27/32 inch overall length |
|
5133-00-241-5948 |
11/32 inch diameter, 4 1/32 inch overall length |
|
5133-00-262-7349 |
3/8 inch diameter, 4 1/4 inch overall length |
|
5133-00-133-4210 |
13/32 inch diameter, 4 15/32 inch overall length |
|
5133-00-133-4215 |
7/16 inch diameter, 4 11/16 inch overall length |
|
5133-00-241-5916 |
15/32 inch diameter, 4 7/8 inch overall length |
|
5133-00-133-4216 |
1/2 inch diameter, 5 3/32 inch overall length |
Workmanship. The drills shall be free from fins, burrs, rust, imperfections and any other defects which may impair serviceability, durability, or appearance.
Certification. The contractor shall certify that the product offered meets the salient characteristics of this description and that the product conforms to the producer’s own drawings, specifications, standards and quality assurance practices and is the same product offered for sale in the commercial marketplace. The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract.
Recovered materials. The manufacturer shall utilize recovered materials to the maximum extent practicable.
Preservation, packaging, packing, and marking. Each drill (six per package) shall be preserved and packaged in accordance with normal commercial practice and packed to assure acceptance by common carrier and provide product protection against loss and damage during multiple shipments, handling, and storage. The shipping container shall be in compliance with National Motor Freight Classification and Uniform Freight Classification. Marking shall be in accordance with the contract or order.
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