Technical Specification Confirmation
PROCUREMENT & SUPPLY DECISION RECORD
Ref: ACG-SPEC-MQEGCT6T  ·  Generated: 15 Jun 2026
ACG AgaCanGroup
sales@agacaninvestment.com
agacangroup.com
Dormer HSS Countersink, 5.8mm Head, 3 Flute(s), 90°, 1 Piece(s)
Dormer
Dormer HSS Countersink, 5.8mm Head, 3 Flute(s), 90°, 1 Piece(s)
Part No.
G1365.8
Procurement Intelligence
Dormer G-Series HSS countersink for precision hole finishing in metalworking. This 90° countersink (5.8mm head, 3-flute design) is used to chamfer drilled holes for screw seating and deburring in manufacturing and assembly operations. Verify compatibility with your spindle speed range and coolant system before procurement, as HSS requires proper cooling for optimal tool life.
Screw hole chamfering finishing
Before ordering — verify:
☐ Spindle speed compatibility
☐ Coolant/lubrication availability
☐ Replacement stock rotation
Technical Specifications
Drill Bit TypeCountersink
Head Diameter5.8mm
Countersink Angle90°
Number Of Flutes3
MaterialHSS
Overall Length45 mm
Number of Pieces1
ACG Industrial & Infrastructure Solutions
Kampala, Uganda  ·  Malatya, Turkey
http://agacangroup.com/product/mechanical/power-tools-soldering-welding/drill-bits-parts/countersinks/dormer-hss-countersink-5-8mm-head-3-flute-s-90-1-piece-s?mal=66275a9012f5f0d90d99d0e2
This document confirms the above specification is available in the ACG Industrial catalogue. Pricing and availability on request. Forward to your procurement team to initiate an RFQ.