HSS Metric Tap & Die Set with Adjustable Wrench
Precision alloy/HSS ground threads; suitable for workshop maintenance and automotive bolt restoration.
Taps & Dies
Engineered for high-volume thread cutting and machine tapping in steel, alloy, stainless steel, and cast iron. Manufactured to strict DIN standard tolerances by Jiangsu WRD Tools Co., Ltd.
Industrial Threading Catalog
Showing verified export configurations for distributors and brand owners 
20-Piece HSS M3–M12 Straight Flute Tap & Die Kit
Includes M3 through M12 hand taps, matching round dies, tap wrench, and die stock in an impact case.
8-Piece Round Metric Threading Die Set with Holder
M3 to M12 circular external threading dies; precision-milled relief flutes for clean chip evacuation.
32-Piece Master Thread Tap, Drill & Die Workshop Set
Full tap set, corresponding core drill bits, thread pitch gauge, and heavy-duty metal storage case.
DIN352 Right-Hand HSS Metric Hand Taps M2–M10
High Speed Steel 6542; engineered for through and blind holes in alloy steels, non-ferrous metals.
3-Piece DIN352 Hand Tap Set (Taper, Plug, Bottoming)
Standard 3-stage thread forming for consistent accuracy; ISO 529 / DIN standard execution.
1/4" Hex Shank Combination Drill & Tap Bits (M3–M8)
Drills, taps, and deburrs in a single pass; 1/4-inch hex shank fits quick-change impact drivers.
DIN376 TiN Coated Spiral Flute M35 Machine Tap
M35 Cobalt (5% Co) with Titanium Nitride coating; backwards chip discharge for high-precision blind holes.
DIN371 HSS-E M35 Cobalt Spiral Point Machine Tap
Reinforced shank design; pushes chips forward for efficient high-speed through-hole production tapping.
Engineering Specifications & Quality Control
Steel Grade Consistency
Jiangsu WRD Tools Co., Ltd. strictly controls raw material sourcing using certified High Speed Steel grades (M2/6542, M35 Cobalt, and 4341). Every heat lot is spectro-analyzed prior to CNC grinding.
Tolerance Classes & Geometry
Machine taps are produced to 6H/ISO2 tolerances. We offer spiral point (pot) taps for through-holes, spiral flute taps (35°/45°) for blind holes, and straight flute hand taps.
Vacuum Heat Treatment
In-house computerized heat treatment lines produce uniform hardness of 63–66 HRC (M2) and 65–68 HRC (M35), maintaining optimal edge retention without brittleness.
Private-Label OEM Services
Laser marking of logos and sizes on shanks, customized surface coatings (Bright, Black Oxide, TiN, TiCN), and bespoke branded packaging (metal cassettes, plastic indexing boxes).