135 Heavy-Duty Cobalt Jobber Length Drill Chicago-Latrobe 550-TA TiAlN HSS-CO 8%-M42 RHS/RHC Let-N
Heavy-duty construction for drilling in tough, high-tensile and work-hardening materials under extreme operating conditions. Manufactured from premium cobalt high-speed steel, increasing hot hardness and extending drill wear life. 135° P3 split point is self-centering for reduced thrust and easier penetration. Sizes smaller than .0625" do not have split point. Metric sizes are manufactured to DIN 338 OAL and flute length specifications. TiAlN (Titanium aluminum nitride) coating combines the ability to work in high-temperatures with added harness to increase tool life. For drilling in stai
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Attributes
| Brand name, Manufacturer name | Chicago-Latrobe |
|---|---|
| Manufacturer | Chicago-Latrobe Greenfield Greenfield Industries |
| CategoryId | 7778 |
| DimensionUnit | inch |
| GraingerSku | 6ZKC1 |
| Extra Product Name | 135 Heavy-Duty Cobalt Jobber Length Drill Chicago-Latrobe 550-TA TiAlN HSS-CO 8%-M42 RHS/RHC Let-N |
| UPC | 662355449585 |
| UnitOfMeasure | EA |
| Weight | 0.39 0.05 |
| WeightUnit | lbs |
| cali_prop65_orglabel, cali_prop65_whtlabel, AdultProduct, Autographed, Batteries_required, Memorabilia, TradeInEligible | False |
| countryOfOrigin | US |
| height | 3.38 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 0.42 |
| moq, multiple, width | 6 |
| MPN, Keyword, ModelNumber, Model_number, Mpns, PartNumber, Part_number, StrippedMpns | 44958 |
| qtyInStock, qtyInStockOverride, tierMinQty1, Number of Pieces, Number_of_items | 1 |
| qtySource | qtyInStockOverride |
| SKU | G3714995 |
| tierPrice1 | 13.85 |
| url | https://www.zoro.com/chicago-latrobe-135-heavy-duty-cobalt-jobber-length-drill-chicago-latrobe-550-ta-tialn-hss-co-8-m42-rhsrhc-let-n-44958/i/G3714995/ |
| Drill Bit Dimension Type | Letter |
| Drill Bit Size, Size | N |
| Shank Dia | 19/64 in |
| Overall Length | 4 3/8 in |
| Flute Length | 3 1/16 in |
| Maximum Drilling Depth | 2 19/64 in |
| Depth:Dia Ratio, Depth x Dia Ratio | 4xD |
| Shank Length | 1 5/16 in |
| Drill Length Class | Jobber Length |
| Drill Diameter Tolerance | +0.0000 in/-0.0010 in |
| Drill Point Length | 0.0000 in |
| Drill Bit Grouping | Drill Bit |
| Item | Jobber Length Drill Bit |
| Drill Bit Point Angle | 135 Degrees |
| Drill Bit Material | Cobalt |
| Decimal Equivalent | 0.3020 |
| Drill Bit Finish | TiAlN |
| Material | Cobalt Cobalt Steel |
| Flute Type | Spiral |
| Coolant Fed | Non-Coolant Through |
| Cutting Direction | Right Hand |
| Number of Flutes | 2 |
| Asin | B0025PWERA B09TJPSNXX |
| Brand | Chicago Latrobe |
| Bullet_point | Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials Extra thick web provides increased strength and rigidity compared to standard drill bits Jobber length drill bit has a midrange drilling depth for general-purpose applications Made in the USA Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging Titanium aluminum nitride (TiAlN) coating provides wear and corrosion resistance in high-speed or heavy feed-rate drilling |
| ClassificationId | 256275011 6001488011 |
| Cutting_angle_string | 135.0 |
| DisplayName | Combination Drill & Taps Jobber Drill Bits |
| Finish_type | Titanium Aluminum Nitride |
| Height | 0.199999999796 0.2 0.508 13 14 2133 2139 2308 303 307 500 600 75 89 90 |
| Identifier | 00662355449585 0662355449585 662355449585 |
| IdentifierType | EAN GTIN UPC |
| ItemClassification | BASE_PRODUCT |
| ItemName, Item_name | Chicago Latrobe 550TA Cobalt Steel Jobber Length Drill Bit, TiAlN Coated, Round Shank, 135 Degree Split Point, Letter Size N (Pack of 1) Chicago-Latrobe 44958 550-TA Heavy Duty Jobber Length Drill Bit, N Drill - Letter, 0.302 in Drill - Decimal Inch, 135 deg Point, M42 HSS-Co 8%, TiAlN Coated (Each) |
| Item_package_quantity, PackageQuantity | 1 6 |
| Item_package_weight, Item_weight | 0.05 |
| Item_type_keyword | combination-drill-and-taps jobber-drill-bits |
| Length | 11.43 4.49999999541 4.5 |
| Link | https://m.media-amazon.com/images/I/21a7yHPbhdL._SL75_.jpg https://m.media-amazon.com/images/I/21a7yHPbhdL.jpg https://m.media-amazon.com/images/I/31aILNQfCPL._SL75_.jpg https://m.media-amazon.com/images/I/31aILNQfCPL.jpg https://m.media-amazon.com/images/I/31nn+e0MvZL._SL75_.jpg https://m.media-amazon.com/images/I/31nn+e0MvZL.jpg https://m.media-amazon.com/images/I/31uCYcgqR1L._SL75_.jpg https://m.media-amazon.com/images/I/31uCYcgqR1L.jpg https://m.media-amazon.com/images/I/41Fs306DCWL._SL75_.jpg https://m.media-amazon.com/images/I/41Fs306DCWL.jpg https://m.media-amazon.com/images/I/51G545D8MdL._SL75_.jpg https://m.media-amazon.com/images/I/51G545D8MdL.jpg https://m.media-amazon.com/images/I/51gCq6GRsbL.jpg https://m.media-amazon.com/images/I/61NED-utjfL.jpg https://m.media-amazon.com/images/I/71UimbFz-xL.jpg https://m.media-amazon.com/images/I/81TLv2tFnKL.jpg https://m.media-amazon.com/images/I/91AUJRBIFpL.jpg https://www.amazon.com/gp/bestsellers/hi https://www.amazon.com/gp/bestsellers/hi/256275011 |
| Mfg_series_number | 550TA |
| ParentAsins | B006O2S44C |
| ProductType | DRILL_BITS |
| Product_description | Chicago-Latrobe Jobber Length Drill Bit, Heavy Duty, Series: 550-TA, Imperial, N Drill - Letter, 0.302 in Drill - Decimal Inch, 4-3/8 in Overall Length, 3-1/16 in Cutting Depth, 2 Flutes, Right Spiral Flute, 3-1/16 in Flute Length, 0.302 in Dia x 1.3125 in L Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, M42 HSS-Co 8% Cutting Edge, No Through Coolant, M42 HSS-Co 8%, TiAlN Coated, Applicable Materials: Alloy Steel, Stainless Steel, Titanium and Tool Steel |
| Product_site_launch_date | 2004-11-09T05:00:01-00:00 2023-11-29T00:33:04.971Z |
| Rank | 1651238 5244 |
| String_value | 3-1/16 |
| Title | Jobber Drill Bits Tools & Home Improvement |
| Type | Round Spiral VARIATION drill bits ean gtin upc |
| Unit | centimeters degrees inches pounds |
| Unit_count | 1.0 |
| Variant | MAIN PT01 PT02 PT03 PT04 |
| WebsiteDisplayGroup | biss_basic_display_on_website home_improvement_display_on_website |
| WebsiteDisplayGroupName | BISS Basic |
| Width | 0.199999999796 0.2 0.508 1464 1710 1711 2130 2248 343 487 498 500 51 600 73 75 |
Distributor offers
| Seller | SKU | MOQ | In stock | Multiple | Prices |
|---|---|---|---|---|---|
| G3714995 | 6 | 1 | 6 | 1 @ $13.85 | |
| 44958 | 1 | 1 | 1 @ $14.27 | ||
![]() bscsource.com | 44958 | 1 | 1 | 1 @ $22.09 | |
| WBB2542981 | 6 | -2 | 6 | 1 @ $15.50 | |
![]() Guardian | 06130637 | 1 | -2 | 1 | 1 @ $32.78 |
| 44958 | 8 | -2 | 6 | 1 @ $14.27 | |
| 44958 | 1 | -2 | 1 | 1 @ $15.91 | |
| 06130637 | 1 | -2 | 1 | 1 @ $26.65 | |
![]() MRO Supply | 6128558 | 1 | 1 | 1 @ $14.25 | |
| 6130637 | 1 | -2 | 1 | 1 @ $29.98 |
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- Jobber length drill bit has a midrange drilling depth for general-purpose applications
- Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
- Titanium aluminum nitride (TiAlN) coating provides wear and corrosion resistance in high-speed or heavy feed-rate drilling
- Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
- Extra thick web provides increased strength and rigidity compared to standard drill bits
- Made in the USA


