CHICAGO-LATROBE Jobber Length Drill Bit: #77, 135° Point, TiN-Coated HSS
The CHICAGO-LATROBE Jobber Length Drill Bit #77 is a NAS-Spec high-speed steel drill bit for aerospace, featuring a TiN-coated HSS construction, 135° point, and NAS 907 Type B design (MPN 41747). With a diameter of…
SKU 3G-OTH-190411
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
Need installation or engineering help?
Ask a question
Product Description
The CHICAGO-LATROBE Jobber Length Drill Bit #77 is a NAS-Spec high-speed steel drill bit for aerospace, featuring a TiN-coated HSS construction, 135° point, and NAS 907 Type B design (MPN 41747). With a diameter of 0.0180 inches, it is engineered for precision drilling in demanding applications. 3G Electric interprets customer demand and delivers this genuine industrial tool across 14 departments—including machining—with specialist depth in combustion, pumps, and controls as a trusted partner.
Frequently Asked Questions
What is the CHICAGO-LATROBE Jobber Length Drill Bit #77 used for?
This #77 drill bit is designed for precision drilling in aerospace applications, meeting NAS 907 Type B specifications. Its 135° split point and TiN coating reduce walking and extend tool life on high-strength alloys. It is ideal for maintenance, repair, and production tasks requiring tight tolerances in aircraft-grade materials.
What are the specifications of the CHICAGO-LATROBE 41747 drill bit?
The CHICAGO-LATROBE 41747 is a #77 jobber length drill bit with a 0.0180-inch diameter, 135° point angle, and TiN-coated high-speed steel construction. It conforms to NAS 907 Type B standards for aerospace use. The TiN coating provides wear resistance and lubricity for drilling in ferrous and non-ferrous metals.
Where to buy CHICAGO-LATROBE drill bits worldwide?
3G Electric supplies CHICAGO-LATROBE drill bits worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead times on the 41747 and other NAS-spec tooling. We source and deliver to meet aerospace and manufacturing requirements.
How to select the correct jobber length drill bit for aerospace work?
For aerospace drilling, select bits meeting NAS 907 Type B standards, like the CHICAGO-LATROBE #77. Consider the material: TiN-coated HSS suits high-strength alloys. The 135° split point reduces thrust and prevents walking. Match the diameter (0.0180 in) to your hole tolerance. Always use proper speeds and coolant for the workpiece.
Used in
Common applications for CHICAGO-LATROBECHICAGO-LATROBE Products
3G Electric supplies CHICAGO-LATROBE nas-spec high-speed steel jobber-length drill bits for aerospace. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
