GSR

GSR Germany Drill Bits, Hand Taps, and Threading Tools for Metalworking and Fabrication

GSR is a German-engineered metalworking tool brand specializing in HSS and Cobalt M35 twist drill bits, machine taps with spiral point and spiral flute geometry, hand taps in metric and imperial sizes, NPT pipe taps, countersink drills, step drills, and tap-and-die accessories. GSR in the Philippines is the choice of fabricators, machinists, automotive technicians, structural steel workers, maintenance teams, plumbers, and serious metalworkers who require German precision tooling that holds up to demanding production drilling and tapping in steel, stainless steel, and hardened materials. With 135° split-point geometry, nitrided fully-ground finishes, and Cobalt M35 alloy options for the toughest workpieces, GSR delivers the consistent cutting performance professional shops depend on.

The collection covers the complete GSR threading and drilling lineup paired with RGC tap wrenches, ratchet tap holders, round die handles, and TCT multi-purpose bits — including HSS M2 and Cobalt M35 twist drill bits in metric (3mm to 13mm jobber, 14mm to 25mm reduced 1/2" shank) and imperial (1/8" to 1/2" jobber, 9/16" to 1" reduced shank) sizes; complete 25-piece HSS drill bit sets (M1 to 13mm by 0.5mm steps); HSS spiral-point thru-hole machine taps and spiral-flute blind-hole machine taps in M3 to M10; carbon steel hand taps in NC imperial sizes (1/8"-40 to 1"-8) and HSS metric hand taps (M3 to M24); CS pipe taps in NPT sizes 1/8"-27 to 1"-11.5; HSS countersink drills 90°; AL TiSIN-coated HSSE-M35 step drill bits with 3 spiral flutes (4–32mm and 5–35mm); plus DIN 1814 tap wrenches, ratchet tap holders, and round die handles. Whether you fabricate steel components in Quezon City, machine parts in Caloocan, run an automotive shop in Cebu, or maintain industrial equipment in Davao, GSR delivers the German-grade threading and drilling precision experienced metalworkers trust.

What You'll Find in This Collection

• GSR HSS M2 Twist Drill Bits — 135° split point, nitrided and fully ground in metric (3mm to 13mm by 0.5mm) and imperial (1/8" to 1/2") sizes
• GSR Cobalt M35 Twist Drill Bits — premium cobalt alloy for stainless steel, hardened steel, and tough materials, in metric and imperial sizes
• GSR 1/2" Shank Reduced Drill Bits — large diameter HSS bits in 9/16" to 1" imperial and 14mm to 25mm metric, with 1/2" shanks for standard chuck capacity
• GSR HSS Drill Bit Set — 25-piece premium set covering M1 to 13mm by 0.5mm increments in a metal storage case
• GSR HSS Spiral Point Machine Taps (Thru Hole) — M3 to M10 for high-speed power tapping in through-holes
• GSR HSS Spiral Flute Machine Taps (Blind Hole) — M3 to M10 for blind-hole tapping where chips must evacuate up the flutes
• RGC Hand Taps 3pcs/Set — Carbon Steel (NC imperial 1/8"-40 to 1"-8) and HSS (metric M3 to M24) for manual threading
• RGC CS Pipe Taps NPT — 1/8"-27, 1/4"-18, 3/8"-18, 1/2"-14, 3/4"-14, and 1"-11.5 for plumbing and pipe fittings
• GSR HSS Countersink Drills 90° — M12.4 (M8 shank), M15 (M10 shank), and M19 (M10 shank) for chamfering bolt heads and deburring
• GSR AL TiSIN HSSE-M35 Step Drill Bits — 3-flute spiral, hex shank, in 4–32mm and 5–35mm ranges for sheet metal and panel work
• RGC Tap Wrench DIN 1814 — adjustable T-handle wrenches No. 1 (M1–M10), No. 2 (M4–M12), No. 3 (M5–M20), and No. 4 (M9–M27)
• RGC Ratchet Tap Holder — No. 2 ratchet handle for M5–M12 taps in confined spaces
• RGC Round Die Handle — 1.1/2" (38×14mm) for hand-threading external threads with split-die rounds
• RGC TCT Multi-Purpose Bits — tungsten carbide tipped drill bits in 5mm, 6mm, 8mm, 10mm, 12mm, and 5-piece sets for masonry, tile, and multi-material drilling

GSR / RGC Drill Bits and Taps Price Range in the Philippines

GSR is positioned as a premium German metalworking tool brand offering professional-grade drilling and threading at industrial pricing. RGC accessories complement the GSR cutting tools at value pricing. Bulk and shop pricing is available for fabrication shops, machine shops, automotive workshops, and maintenance teams that consume drill bits and taps in volume.

• Entry-level / small individual bits and taps: Small HSS drill bits (3mm–8mm), small hand taps (M3–M6, 1/8"–1/4"), TCT multi-purpose bits, and basic countersinks ranging from ₱18 to ₱340 — practical for single-job purchases
• Mid-range / standard sizes and accessories: Mid-range twist drills (8mm–13mm and 1/4"–1/2"), standard hand and machine taps (M8–M16), pipe taps, RGC tap wrenches, ratchet tap holder, and round die handle ranging from ₱340 to ₱1,000
• Professional / large diameter, sets, and specialty: 1/2" shank reduced drill bits (9/16"–1" and 14mm–25mm), large hand taps (M18–M24, 7/8"–1"), HSS countersinks, AL TiSIN step drill bits, and the 25-piece HSS Drill Bit Set ranging from ₱1,000 to ₱3,875

Choosing the Right GSR / RGC Tool

Why Professionals Use GSR Drill Bits and Taps

• German engineering with consistent dimensional accuracy and edge geometry across every bit and tap — critical for production work where threads must mate properly
• 135° split-point geometry on GSR twist drills self-centers without a pilot hole and starts cleanly on hard surfaces, reducing wandering and broken bits
• Nitrided, fully-ground HSS M2 surfaces resist heat and wear longer than uncoated bargain bits — saving total tooling cost in production
• Cobalt M35 alloy delivers significantly longer life in stainless steel, hardened steel, and high-strength alloys where standard HSS overheats and fails
• Spiral point thru-hole machine taps push chips forward — ideal for fast power tapping in production through-holes
• Spiral flute blind-hole machine taps lift chips up and out — essential for clean blind-hole threads where chip evacuation is otherwise impossible
• AL TiSIN-coated step drill bits deliver multi-diameter sheet metal hole-making with extended coating life and smooth, deburred holes
• RGC accessories (tap wrenches, ratchet holders, die handles) provide the leverage and torque control needed to tap by hand without breaking the tap

Expert Tips for Drilling and Tapping

• Always use cutting fluid when drilling and tapping — even cheap general-purpose cutting oil dramatically extends bit and tap life, especially in stainless steel and Cobalt M35 applications where work hardening destroys uncooled bits
• Match RPM to material and bit size — small HSS bits (3–6mm) in mild steel run at 1,500–2,500 RPM, larger bits (10–13mm) drop to 500–800 RPM, and stainless steel runs at half those speeds; running too fast generates heat that destroys the cutting edge
• For tapping, drill the correct tap-drill size first — for M6×1.0, drill 5.0mm; for M8×1.25, drill 6.8mm; for 1/4"-20 NC, drill #7 (5.1mm); using the wrong tap-drill size produces weak threads or breaks the tap
• When hand-tapping, advance the tap one full turn forward, then back it off a quarter turn to break chips — never force a hand tap; if you feel binding, back out, clear chips, and restart with cutting fluid

Why Buy from KHM Megatools

• Price Match Program — we match competitor pricing on eligible items
• Same-day delivery within Metro Manila
• Nationwide shipping across the Philippines
• Wide selection of GSR German drill bits, machine taps, and RGC threading accessories
• Trusted by fabricators, machinists, automotive shops, and maintenance teams
• BIR-registered with official receipts for business buyers
• Bulk and shop pricing available — ideal for production shops that consume drill bits and taps in volume
• Authentic German-made GSR and RGC accessories sourced for the Philippine market

Frequently Asked Questions

What's the difference between HSS M2 and Cobalt M35 drill bits?

HSS M2 is high-speed steel suitable for general-purpose drilling in mild steel, aluminum, brass, plastic, and wood — affordable and widely used. Cobalt M35 contains 5% cobalt alloy added to the steel matrix, dramatically improving heat resistance and edge retention in stainless steel, hardened steel, tool steel, and abrasive materials. For shops that drill stainless or alloy steels regularly, Cobalt M35 pays for itself in extended bit life.

What's the difference between spiral point and spiral flute machine taps?

Spiral point taps (also called gun taps) push chips forward through the hole — making them ideal for tapping through-holes where chips can exit out the bottom. Spiral flute taps lift chips backward up the flutes — essential for blind holes (closed-bottom) where chips have nowhere else to go. Using the wrong tap type causes chip packing, broken taps, and ruined threads. Always match the tap to the hole geometry.

What tap-drill size do I use for metric and imperial taps?

Common metric tap-drill sizes: M3×0.5 → 2.5mm, M4×0.7 → 3.3mm, M5×0.8 → 4.2mm, M6×1.0 → 5.0mm, M8×1.25 → 6.8mm, M10×1.5 → 8.5mm, M12×1.75 → 10.2mm. Common imperial NC tap-drill sizes: 1/4"-20 → #7 (5.1mm), 5/16"-18 → F (6.5mm), 3/8"-16 → 5/16" (7.9mm), 1/2"-13 → 27/64" (10.7mm). Always reference a tap-drill chart to confirm the exact size for the thread you are cutting.

Are GSR drill bits compatible with cordless drills and impact drivers?

GSR HSS and Cobalt M35 twist drill bits use standard round shanks compatible with all 3-jaw chucks on corded and cordless drills. The AL TiSIN step drill bits feature hex shanks, making them compatible with impact drivers, magnetic bit holders, and quick-change chucks. Always run drills (not impacts) for precision metal drilling — the impact mechanism on drivers can cause bit breakage when drilling hard materials.

What does the AL TiSIN coating on the step drill bit do?

AL TiSIN (Aluminum Titanium Silicon Nitride) is a multi-layer hard coating that significantly increases surface hardness, heat resistance, and lubricity compared to uncoated or basic TiN-coated bits. The result is faster cutting, smoother holes, and 2–3× longer tool life — particularly valuable on step drill bits that drill multiple diameters per cycle and accumulate heat quickly.

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