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Drill 13.1 NWKc HSS DIN 345 Baildon
2681
Diameter (mm): 13,1301 sizes of this drill
33,13,23,33,43,53,63,73,83,944,14,24,34,44,54,64,74,84,955,15,25,35,45,55,65,75,85,966,16,26,36,46,56,66,76,86,977,17,157,27,257,37,47,57,67,77,757,87,988,18,28,258,38,48,58,68,78,88,999,19,29,259,39,49,59,69,79,759,89,91010,110,210,310,410,510,610,710,7510,810,91111,111,211,2511,311,411,511,611,711,811,91212,112,212,312,412,512,612,712,812,91313,113,213,2513,313,413,513,613,713,7513,813,91414,2514,414,514,751515,2515,515,751616,2516,516,751717,2517,517,751818,2518,518,751919,2519,519,752020,2520,520,752121,2521,521,752222,2522,522,752323,2523,523,752424,2524,524,752525,2525,525,752626,2526,526,752727,2527,527,752828,2528,528,752929,2529,529,753030,2530,530,753131,2531,531,753232,2532,532,753333,2533,533,753434,2534,534,753535,2535,535,753636,2536,536,753737,2537,537,7537,83838,538,753939,2539,539,754040,2540,54141,54242,54343,54444,54545,54646,546,75474848,54949,55050,55151,55252,553545556575858,55960616263646566676869707172737475767778798081828384858687888990919293949596979899100
€9.71 tax inc.
Net price: €7.89
Description
DIAMETER Ø13.1 mm
MORSE TAPER MT1
OVERALL LENGTH 182 mm
FLUTE LENGTH 101 mm
Technical specifications of the Ø13.1 mm drill bit
Twist drill with Morse taper shank
| TECHNICAL DATA | |
|---|---|
| Diameter | Ø13.1 NWKc HSS |
| Standard | DIN 345 |
| Drill type | NWKc — twist drill with taper shank |
| Material | HSS (high-speed steel) |
| Overall length l1 | 182 mm |
| Flute length l2 | 101 mm |
| Morse taper | MT1 |
| Point angle | 118° |
| Diameter tolerance | h8 |
| Cutting direction | Right-hand |
Ø13.1 mm HSS metal drill bit – Morse taper MT1
Product description and key benefits
Choosing a Ø13.1 mm twist drill with an MT1 taper instead of a straight-shank equivalent is justified wherever the drilling machine has a tapered spindle. Seating the tool directly in the spindle simplifies the process — eliminating the chuck reduces setup operations and the risk of runout. The Ø13.1 Morse taper drill conforming to DIN 345 fits any MT1 spindle, regardless of the machine tool manufacturer.
Key benefits of the Ø13.1 mm metal drill bit
- Self-holding Morse taper — MT1 transmits torque without slippage — essential for prolonged batch drilling
- HSS steel with a hardness of 63–65 HRC — the cutting edge retains its sharpness throughout the tool's service interval between sharpenings
- Flute length 101 mm — the maximum drilling depth allows typical shop sections and sheet metal to be machined in a single pass
- 118° point angle — self-centering in soft steels — eliminates the need for spot drilling on flat surfaces
- Diameter tolerance h8 — repeatable hole size in batch and single-part production
- Cutting edge reconditioning — repeated resharpening extends tool life — at l2 = 101 mm, the resharpening allowance is approximately 12 mm
The Ø13.1 mm Morse taper drill is used in metalworking shops for bolt and dowel holes in steel components. In batch production, it provides repeatable dimensional accuracy within tolerance class H12 (Ø13.100–Ø13.280 mm). H7 fits require finish reaming.
Morse tapers – dimensions to DIN 228
Dimension table for all Morse tapers MT0–MT6
| Taper | Diameter D [mm] | Length [mm] |
|---|---|---|
| MT0 | 9.045 | 49.8 |
| MT1 | 12.065 | 53.5 |
| MT2 | 17.780 | 64.0 |
| MT3 | 23.825 | 80.5 |
| MT4 | 31.267 | 117.5 |
| MT5 | 44.399 | 149.5 |
| MT6 | 63.348 | 210.0 |
REDUCTION SLEEVES COMPATIBLE WITH THE Ø13.1 MM DRILL BIT:
| ✓ | MT1 → MT2 — for a spindle with an MT2 socket |
| ✓ | MT1 → MT3 — for a spindle with an MT3 socket |
| ✓ | MT1 drill drift — for removing the drill bit from the spindle |
Cutting data for the Ø13.1 mm drill bit according to ISO 513
Recommended machining conditions for a diameter of Ø13.1 mm
| ISO symbol | Workpiece material | Vc [m/min] | f [mm/rev] | n [rpm] | Vf [mm/min] |
|---|---|---|---|---|---|
| P Steel | Structural steel up to 900 N/mm² | 11÷20 | 0.12 | 267÷486 | 32÷58 |
| K Cast iron | Gray cast iron GG20–GG30 | 13÷16 | 0.12 | 316÷389 | 38÷47 |
| N Copper and Al alloys | Cu, CuZn, Al, and alloys | 25÷28 | 0.16÷0.20 | 607÷680 | 97÷136 |
Drill sharpening
Sharpen the Ø13.1 mm drill bit on a tool grinder, maintaining the 118° point angle and cutting edge symmetry. Asymmetric sharpening enlarges the hole diameter and loads the spindle unevenly. Each sharpening reduces the flute length by approximately 1–2 mm.
Material compatibility of the Ø13.1 mm drill bit
Range of workpiece materials and application limitations
✓ Structural steel (S235, S355) up to 900 N/mm²
✓ Gray and ductile cast iron (GG20, GGG40)
✓ Low-carbon and medium-alloy steel
▲ Stainless steel (Vc reduced by 40%, ample coolant)
▲ Aluminum and Al alloys (emulsion coolant required)
✗ Hardened steels above 45 HRC
Frequently asked questions about the Ø13.1 mm drill bit
In S235/S355 structural steels, spot drilling is not necessary — the 118° angle provides self-centering. Spot drilling with an NC 90° drill is recommended when drilling on milled surfaces, castings with machining allowance, or difficult-to-machine materials.
A cooling and lubricating emulsion at a concentration of 5–8% is recommended. For stainless steels, increase the concentration to 8–10%. Cast iron can be drilled dry with compressed air to remove chips.
The Ø13.1 mm NWKc drill bit with an MT1 taper mounts directly in the drill press spindle — the self-holding taper eliminates slipping under high cutting torque. A straight shank drill bit requires a drill chuck, which may not transmit the full torque during heavy use.
Product accessories
Reduction sleeve MK4 MK1 1751 PTPa DIN 228
Reference: 1179 In stock > 10 items
€15.79
€19.42 brutto
Reduction sleeve MK3 MK1 1751 PTPa DIN 228
Reference: 1184 In stock > 10 items
€11.84
€14.57 brutto
Reduction sleeve MK5 MK1 1751 PTPa DIN 228
Reference: 1185 In stock > 10 items
€22.37
€27.51 brutto
Reduction sleeve MK2 MK1 1751 PTPa DIN 228
Reference: 2586 In stock > 10 items
€9.21
€11.33 brutto
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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