Specification Brand : Tight Fit BulletPoint1 : Drill bits are made of M7 high-speed steel (HSS), for drilling hard materials BulletPoint2 : 135-degree split-point, 1/4-28 threads and a 5/16 inch hex adapter for removal of drill bit BulletPoint3 : Three lengths of drill bits: Longs=2-3/8 inches; Shorts=1-1/4 inches; Stubs=3/4-7/8 inch BulletPoint4 : Drill bits are black oxided to prevent chip-to-tool welding and corrosion BulletPoint5 : Drill bits comply with National Aerospace Standard NAS965; drill bits are American made BulletPoint6 : Made in the USA Color : Black CustomerPackageType : Standard Packaging CuttingAngleString : 135.0 degrees DriveSystem : Square ExternallyAssignedProductIdentifier1 : 853800002053 ExternallyAssignedProductIdentifier2 : 0853800002053 ExternallyAssignedProductIdentifier3 : 00662355699010 FinishType : Black Oxide GpsrSafetyAttestation : 1 IncludedComponents : Mounting shank ItemLength : 6 inches ItemName : Drill Bits Short Length Threaded Shank, Stub Series Drill Bit Set 4 Tight Fit Tools 00134 ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : short-length-drill-bits Manufacturer : EV Technologies, Inc. Material : Tool Steel MeasurementSystem : Inch MfgSeriesNumber : 157 ModelName : 70956 ModelNumber : 00134 NumberOfBoxes : 1 NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 5 PackageLevel : unit PartNumber : 00134 ProductDescription : Stub Set - 00134 The Stub Series Drill Set 00134 includes five aircraft quality twist drill bits in the following drill diameters: 3/32, 1/8, 5/32, 3/16 & 1/4 inches. The overall length, not including the threads, is 1/2” - 5/8". All TightFit threaded shank drill bits are black oxided to add lubricity, prevent corrosion while enhancing appearance. The drill bits comply with National Aerospace Standards. The NAS 907B Standard provides the following description, "A special short flute, heavy duty drill designed for drilling the hard, high strength alloys used in aircraft manufacturing." The drill bits are made from M2 or M7 tool steel with self-centering, 135 degree, P3, split points and a Rockwell C scale hardness of 63.5 to 66. They are manufactured as right-hand tools with 5/16" hex wrench flats and 1/4-28 UNF-2A threads. TightFit threaded shank drill bits are concentric, self-tightening, non-slipping drills designed for work in limited space situations. They can be used to drill metal, wood, or plastic. ProductSiteLaunchDate : 2015-07-14T23:04:03.802Z Size : 8.90mm StreetDate : 2017-11-07T00:00:01Z Style : SDS Plus SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Alloy Steel SurfaceRecommendation1 : Metal SurfaceRecommendation2 : Concrete SurfaceRecommendation3 : Masonry UnitCount : 1 UnspscCode : 27110000