HSS-E Machine Taps - Straight

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• Material: HSS-E (Cobalt High-Speed Steel) — Cobalt 5%
• Type: Straight Flute
• Coating: Uncoated, TiN Coated, TiCN Coated
• Thread Standards: Metric (M), Metric Fine (MF), UNC, UNF
• Application: General-Purpose Through-Hole Threading

HSS-E machine tap with straight flute geometry (cobalt high-speed steel) engineered for dependable, general-purpose threading in CNC and manual machining. The straight flute design provides a rigid, robust cutting edge suited to through-hole threading and short-chipping materials, where swarf is controlled without complex flute geometries. The 5% cobalt content improves red hardness and wear resistance, allowing higher cutting speeds and extended tool life when machining steels, stainless steels, cast iron, aluminum, and engineering alloys. Available in uncoated, TiN (Titanium Nitride), and TiCN (Titanium Carbonitride) coated variants across Metric, Metric Fine, UNC, and UNF thread standards.

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Machine Taps - Specifications

~ Available sizes per thread standard.

Other Machine Taps: Spiral Flute HSS-E Spiral Point

Metric (M) - Coarse Thread (DIN 376)

Thread Size	Pitch (mm)	Overall Length (mm)	Shank Diameter (mm)	Core Hole Drill Size (mm)
M3	0.50	56	3.5	2.50
M4	0.70	63	4.5	3.30
M5	0.80	70	6.0	4.20
M6	1.00	80	6.0	5.00
M7	1.00	80	6.0	6.00
M8	1.25	90	8.0	6.80
M9	1.25	90	8.0	7.80
M10	1.50	100	7.0	8.50
M11	1.50	100	7.0	9.50
M12	1.75	110	9.0	10.20
M14	2.00	110	11.0	12.00
M16	2.00	120	12.0	14.00
M18	2.50	130	14.0	15.50
M20	2.50	140	14.0	17.50
M22	2.50	150	16.0	19.50
M24	3.00	160	18.0	21.00
M27	3.00	170	20.0	24.00
M30	3.50	180	20.0	26.50
M33	3.50	190	22.0	29.50
M36	4.00	200	25.0	32.00
M39	4.00	210	28.0	35.00
M42	4.50	220	28.0	37.50
M45	4.50	230	32.0	40.50
M48	5.00	240	32.0	43.00
M52	5.00	250	35.0	47.00
M56	5.50	260	36.0	50.50
M60	5.50	270	38.0	54.00
M64	6.00	280	38.0	58.00
M68	6.00	290	40.0	62.00
M72	6.00	300	42.0	66.00
M76	6.00	310	45.0	70.00
M80	6.00	320	45.0	74.00
M85	6.00	330	48.0	79.00
M90	6.00	340	50.0	84.00
M95	6.00	350	50.0	89.00
M100	6.00	360	52.0	94.00

Metric Fine (MF) - Fine Thread (DIN 374)

Thread Size	Pitch (mm)	Overall Length (mm)	Shank Diameter (mm)	Core Hole Drill Size (mm)
MF8x1.0	1.00	70	6.0	7.00
MF10x1.0	1.00	75	7.0	9.00
MF10x1.25	1.25	75	7.0	8.75
MF12x1.25	1.25	80	9.0	10.80
MF12x1.50	1.50	80	9.0	10.50
MF14x1.50	1.50	90	11.0	12.50
MF16x1.50	1.50	100	12.0	14.50
MF18x1.50	1.50	110	14.0	16.50
MF20x1.50	1.50	120	14.0	18.50
MF22x1.50	1.50	125	16.0	20.50
MF24x2.00	2.00	130	18.0	22.00
MF27x2.00	2.00	135	20.0	25.00
MF30x2.00	2.00	140	20.0	28.00
MF33x2.00	2.00	150	22.0	31.00
MF36x3.00	3.00	160	25.0	33.00
MF39x3.00	3.00	170	28.0	36.00
MF42x3.00	3.00	180	28.0	39.00
MF45x3.00	3.00	190	32.0	42.00
MF48x3.00	3.00	200	32.0	45.00
MF52x3.00	3.00	210	35.0	49.00
MF56x4.00	4.00	220	36.0	52.00
MF60x4.00	4.00	230	38.0	56.00
MF64x4.00	4.00	240	38.0	60.00
MF68x4.00	4.00	250	40.0	64.00
MF72x4.00	4.00	260	42.0	68.00
MF76x4.00	4.00	270	45.0	72.00
MF80x4.00	4.00	280	45.0	76.00
MF85x4.00	4.00	290	48.0	81.00
MF90x4.00	4.00	300	50.0	86.00
MF95x4.00	4.00	310	50.0	91.00
MF100x4.00	4.00	320	52.0	96.00

UNC - Unified Coarse Thread (ASME B94.9)

Thread Size	TPI	Overall Length (in)	Shank Diameter (in)	Core Hole Drill Size (mm)
#4-40 UNC	40	1.875	0.255	1.89
#6-32 UNC	32	2.000	0.318	2.64
#8-32 UNC	32	2.125	0.381	3.39
#10-24 UNC	24	2.375	0.381	3.78
1/4"-20 UNC	20	2.875	0.381	5.08
5/16"-18 UNC	18	3.375	0.480	6.35
3/8"-16 UNC	16	3.875	0.480	7.94
7/16"-14 UNC	14	4.375	0.480	9.53
1/2"-13 UNC	13	4.875	0.590	10.80
9/16"-12 UNC	12	5.250	0.590	12.30
5/8"-11 UNC	11	5.750	0.698	13.50
3/4"-10 UNC	10	6.750	0.878	16.50
7/8"-9 UNC	9	7.250	0.998	19.50
1"-8 UNC	8	7.750	1.123	22.25
1-1/8"-7 UNC	7	8.250	1.248	25.00
1-1/4"-7 UNC	7	8.750	1.310	28.00
1-3/8"-6 UNC	6	9.250	1.436	31.00
1-1/2"-6 UNC	6	9.750	1.560	34.00
1-3/4"-5 UNC	5	10.750	1.748	40.00
2"-4.5 UNC	4.5	11.500	1.998	45.50

UNF - Unified Fine Thread (ASME B94.9)

Thread Size	TPI	Overall Length (in)	Shank Diameter (in)	Core Hole Drill Size (mm)
#10-32 UNF	32	2.375	0.381	4.10
1/4"-28 UNF	28	2.875	0.381	5.54
5/16"-24 UNF	24	3.375	0.480	6.93
3/8"-24 UNF	24	3.875	0.480	8.51
7/16"-20 UNF	20	4.375	0.480	10.20
1/2"-20 UNF	20	4.875	0.590	11.80
9/16"-18 UNF	18	5.250	0.590	13.30
5/8"-18 UNF	18	5.750	0.698	14.90
3/4"-16 UNF	16	6.750	0.878	18.10
7/8"-14 UNF	14	7.250	0.998	21.25
1"-12 UNF	12	7.750	1.123	24.50
1-1/8"-12 UNF	12	8.250	1.248	26.50
1-1/4"-12 UNF	12	8.750	1.310	29.50
1-3/8"-12 UNF	12	9.250	1.436	32.50
1-1/2"-12 UNF	12	9.750	1.560	35.00
1-5/8"-12 UNF	12	10.250	1.686	37.50
1-3/4"-12 UNF	12	10.750	1.748	40.50
1-7/8"-12 UNF	12	11.250	1.936	43.50
2"-12 UNF	12	11.500	1.998	46.00

HSS-E Machine Taps - Straight for General-Purpose Threading

The straight flute machine tap is a versatile threading tool designed for general-purpose tapping in CNC machines and manual operations. Its straight, parallel flutes deliver a strong cutting edge and predictable chip control, making it well suited to through-hole threading and to blind-hole work in short-chipping materials such as aluminum, brass, and low-alloy steels. Straight flute taps are a reliable, cost-effective choice across automotive, marine, and general engineering applications where cycle time and thread quality are important.

Our HSS-E straight flute taps are manufactured from cobalt high-speed steel with a cobalt content of 5%, which improves hot hardness and wear resistance compared with standard HSS. This enables higher cutting speeds and longer tool life when machining ferrous, stainless, and heat-resistant materials. Three surface conditions are available to match your application: uncoated taps offer an economical solution for general-purpose threading; TiN (Titanium Nitride) coated taps add hardness and thermal stability for steel and stainless work; TiCN (Titanium Carbonitride) coated taps deliver superior wear resistance and surface lubricity for the most demanding production environments.

Available in Metric (M), Metric Fine (MF), UNC, and UNF thread standards. Contact our team for size availability, bulk pricing, and stock inquiries across our Dubai warehouse.