Drill Service UK

DHR - HSS Drill, Half Round

HSS Half Round Drills

Ideal for drilling precision holes in Brass and in other materials with care.

Feed rates should be increased and speeds reduced when compared with normal drills.

Hole depths up to 10x can be achieved without relieving.

Point angle 118 degrees.

Size range available from #80 to 1".

Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#80	0.343mm	4.8	19.0	118	£9.61
DHR-0.35	0.35mm	5.0	19.0	118	£16.33
DHR-#79	0.368mm	4.8	19.0	118	£9.61
DHR-1/64	0.396mm	4.8	19.0	118	£9.61
DHR-0.40	0.40mm	5.0	19.0	118	£16.33
DHR-#78	0.406mm	4.8	22.0	118	£9.61
DHR-0.45	0.45mm	5.0	22.0	118	£16.33
DHR-#77	0.457mm	4.8	22.0	118	£9.61
DHR-0.50	0.50mm	5.0	22.0	118	£16.33
DHR-#76	0.508mm	4.8	22.0	118	£9.61
DHR-#75	0.533mm	6.4	25.0	118	£9.61
DHR-0.55	0.55mm	6.0	25.0	118	£16.33
DHR-#74	0.572mm	6.4	25.0	118	£9.61
DHR-0.60	0.60mm	8.0	25.0	118	£16.33
DHR-#73	0.61mm	7.9	29.0	118	£9.61
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#72	0.635mm	7.9	29.0	118	£9.61
DHR-0.65	0.65mm	8.0	29.0	118	£16.33
DHR-#71	0.66mm	9.5	32.0	118	£9.61
DHR-0.70	0.70mm	10.0	32.0	118	£16.33
DHR-#70	0.711mm	9.5	32.0	118	£9.61
DHR-#69	0.742mm	13.0	35.0	118	£9.61
DHR-0.75	0.75mm	13.0	35.0	118	£13.10
DHR-#68	0.813mm	13.0	35.0	118	£7.28
DHR-1/32	0.794mm	13.0	35.0	118	£7.28
DHR-0.80	0.80mm	13.0	35.0	118	£13.10
DHR-#67	0.813mm	13.0	35.0	118	£7.28
DHR-#66	0.838mm	13.0	35.0	118	£7.28
DHR-0.85	0.85mm	16.0	38.0	118	£13.10
DHR-#65	0.889mm	16.0	38.0	118	£7.28
DHR-0.90	0.90mm	16.0	38.0	118	£12.86
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#64	0.914mm	16.0	38.0	118	£7.28
DHR-#63	0.94mm	16.0	38.0	118	£7.28
DHR-0.95	0.95mm	16.0	38.0	118	£12.86
DHR-#62	0.965mm	16.0	38.0	118	£7.28
DHR-#61	0.991mm	18.0	41.0	118	£7.28
DHR-1.00	1.00mm	18.0	41.0	118	£12.86
DHR-#60	1.016mm	18.0	41.0	118	£7.11
DHR-#59	1.041mm	18.0	41.0	118	£7.11
DHR-1.05	1.05mm	18.0	41.0	118	£12.86
DHR-#58	10.67mm	18.0	41.0	118	£7.11
DHR-#57	1.092mm	19.0	44.0	118	£7.11
DHR-1.10	1.10mm	19.0	44.0	118	£12.86
DHR-1.15	1.15mm	19.0	44.0	118	£12.86
DHR-#56	1.181mm	19.0	44.0	118	£7.11
DHR-3/64	1.191mm	19.0	44.0	118	£7.27
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-1.20	1.20mm	19.0	44.0	118	£12.86
DHR-1.25	1.25mm	19.0	44.0	118	£12.86
DHR-1.30	1.30mm	19.0	44.0	118	£12.86
DHR-#55	1.321mm	22.0	48.0	118	£7.11
DHR-1.35	1.35mm	22.0	48.0	118	£12.86
DHR-#54	1.397mm	22.0	48.0	118	£7.11
DHR-#54S	1.397mm Stub Length	16.0	41.0	118	£10.96
DHR-1.40	1.40mm	22.0	48.0	118	£12.86
DHR-1.45	1.45mm	22.0	48.0	118	£12.86
DHR-1.50	1.50mm	22.0	48.0	118	£12.86
DHR-#53	1.511mm	22.0	48.0	118	£7.11
DHR-1.55	1.55mm	22.0	48.0	118	£13.34
DHR-1/16	1.588mm	22.0	48.0	118	£7.43
DHR-1.60	1.60mm	22.0	48.0	118	£13.34
DHR-#52	1.613mm	22.0	48.0	118	£7.43
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-1.65	1.65mm	22.0	48.0	118	£13.34
DHR-1.70	1.70mm	25.0	51.0	118	£13.34
DHR-#51	1.702mm	25.0	51.0	118	£7.43
DHR-1.75	1.75mm	25.0	51.0	118	£13.34
DHR-#50	1.778mm	25.0	51.0	118	£7.43
DHR-1.80	1.80mm	25.0	51.0	118	£13.34
DHR-1.84	1.84mm	25.0	51.0	118	£20.19
DHR-1.85	1.85mm	25.0	51.0	118	£13.34
DHR-#49	1.854mm	25.0	51.0	118	£7.43
DHR-1.90	1.90mm	25.0	51.0	118	£13.34
DHR-#48	1.930mm	25.0	51.0	118	£7.43
DHR-1.95	1.95mm	25.0	51.0	118	£13.34
DHR-5/64	1.984mm	25.0	51.0	118	£7.43
DHR-#47	1.994mm	25.0	51.0	118	£7.43
DHR-2.00	2.00mm	29.0	54.0	118	£13.34
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-2.05	2.05mm	29.0	54.0	118	£13.34
DHR-#46	2.057mm	29.0	54.0	118	£7.43
DHR-#45	2.083mm	29.0	54.0	118	£7.43
DHR-2.10	2.10mm	29.0	54.0	118	£13.34
DHR-2.15	2.15mm	29.0	54.0	118	£13.34
DHR-#44	2.184mm	29.0	54.0	118	£7.43
DHR-2.20	2.20mm	29.0	54.0	118	£13.34
DHR-2.25	2.25mm	29.0	57.0	118	£13.34
DHR-#43	2.261mm	32.0	57.0	118	£7.43
DHR-2.30	2.30mm	29.0	57.0	118	£13.34
DHR-2.35	2.35mm	29.0	57.0	118	£13.34
DHR-#42	2.375mm	32.0	57.0	118	£7.43
DHR-3/32	3/32mm	32.0	57.0	118	£7.43
DHR-3/32S	2.381mm Stub length	19.0	44.0	118	£11.32
DHR-2.40	2.40mm	35.0	60.0	118	£13.34
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#41	2.438mm	35.0	60.0	118	£7.43
DHR-2.45	2.45mm	35.0	60.0	118	£13.34
DHR-#40	2.489mm	35.0	60.0	118	£7.43
DHR-2.50	2.50mm	35.0	60.0	118	£13.81
DHR-#39	2.527mm	35.0	60.0	118	£7.43
DHR-#38	2.578mm	37.0	64.0	118	£7.43
DHR-#38S	2.578mm	15.0	46.0	118	£12.92
DHR-2.60	2.60mm	37.0	64.0	118	£13.81
DHR-#37	2.642mm	37.0	64.0	118	£7.43
DHR-2.70	2.70mm	37.0	64.0	118	£13.81
DHR-#36	2.705mm	37.0	64.0	118	£7.43
DHR-2.75	2.75mm	37.0	64.0	118	£14.07
DHR-7/64	2.778mm	38.0	67.0	118	£7.80
DHR-#35	2.794mm	38.0	67.0	118	£7.80
DHR-2.80	2.80mm	38.0	67.0	118	£14.07
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#34	2.819mm	38.0	67.0	118	£7.80
DHR-#33	2.8702mm	38.0	67.0	118	£7.80
DHR-2.90	2.90mm	38.0	67.0	118	£14.07
DHR-#32	2.946mm	41.0	70.0	118	£7.80
DHR-3.00	3.00mm	41.0	70.0	118	£13.81
DHR-#31	3.048mm	41.0	70.0	118	£7.80
DHR-3.10	3.10mm	41.0	70.0	118	£15.93
DHR-.124	3.150mm	41.0	70.0	118	£28.08
DHR-1/8	3.175mm	41.0	70.0	118	£10.23
DHR-.1255S	3.188mm	27.0	57.0	118	£2.33
DHR-3.20	3.20mm	41.0	70.0	118	£15.93
DHR-3.25	3.25mm	41.0	70.0	118	£15.93
DHR-#30	3.264mm	41.0	70.0	118	£8.01
DHR-3.30	3.30mm	45.0	73.0	118	£17.30
DHR-3.40	3.40mm	45.0	73.0	118	£17.30
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#29	3.454mm	45.0	73.0	118	£8.01
DHR-3.50	3.50mm	45.0	73.0	118	£17.30
DHR-#28	3.569mm	45.0	73.0	118	£9.08
DHR-9/64	3.572mm	45.0	73.0	118	£11.74
DHR-9/64S	3.572mm Stub length	18.0	49.0	118	£12.92
DHR-3.60	3.60mm	45.0	76.0	118	£17.49
DHR-#27	3.658mm	48.0	76.0	118	£10.01
DHR-#27S	3.658mm Stub Length	25.0	52.0	118	£12.92
DHR-3.70	3.70mm	48.0	76.0	118	£17.49
DHR-#26	3.734mm	48.0	76.0	118	£10.01
DHR-3.75	3.75mm	48.0	76.0	118	£17.49
DHR-#25	3.797mm	48.0	76.0	118	£10.01
DHR-3.80	3.80mm	48.0	79.0	118	£17.49
DHR-#24	3.861mm	51.0	79.0	118	£10.01
DHR-3.90	3.90mm	48.0	79.0	118	£17.49
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#23	3.912mm	51.0	79.0	118	£10.01
DHR-5/32	5/32mm	51.0	79.0	118	£26.17
DHR-5/32S	3.969mm Stub length	25.0	52.0	118	£13.11
DHR-#22	3.988mm	51.0	79.0	118	£10.20
DHR-4.00	4.00mm	54.0	83.0	118	£18.40
DHR-#21	4.039mm	54.0	83.0	118	£10.20
DHR-#20	4.089mm	54.0	83.0	118	£10.20
DHR-4.10	4.10mm	54.0	83.0	118	£18.40
DHR-4.20	4.20mm	54.0	83.0	118	£18.40
DHR-#19	4.216mm	54.0	83.0	118	£10.20
DHR-#19S	4.216mm Stub Length	27.0	54.0	118	£13.11
DHR-4.25	4.25mm	54.0	83.0	118	£18.40
DHR-4.30	4.30mm	54.0	83.0	118	£18.40
DHR-#18	4.305mm	54.0	83.0	118	£10.20
DHR-#18S	4.305mm Stub Length	27.0	54.0	118	£13.11
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-11/64	4.366mm	54.0	83.0	118	£15.09
DHR-#17	4.394mm	56.0	86.0	118	£10.86
DHR-4.40	4.40mm	56.0	86.0	118	£19.99
DHR-#16	4.496mm	56.0	86.0	118	£10.86
DHR-4.50	4.50mm	56.0	86.0	118	£19.99
DHR-#15	4.572mm	56.0	86.0	118	£10.86
DHR-4.60	4.60mm	56.0	86.0	118	£19.99
DHR-#14	4.623mm	56.0	86.0	118	£10.86
DHR-#13	4.699mm	59.0	89.0	118	£10.86
DHR-4.75	4.75mm	59.0	88.0	118	£19.99
DHR-3/16	3/16mm	59.0	89.0	118	£16.34
DHR-4.80	4.80mm	59.0	88.0	118	£22.21
DHR-#12	4.801mm	59.0	89.0	118	£11.96
DHR-#11	4.851mm	59.0	89.0	118	£11.96
DHR-4.90	4.90mm	62.0	92.0	118	£22.21
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#10	4.915mm	62.0	92.0	118	£11.96
DHR-#9	4.978mm	62.0	92.0	118	£11.96
DHR-5.00	5.00mm	62.0	92.0	118	£22.21
DHR-#8	5.055mm	62.0	92.0	118	£11.96
DHR-5.10	5.10mm	64.0	95.0	118	£22.21
DHR-#7	5.105mm	62.0	92.0	118	£11.96
DHR-13/64	5.159mm	62.0	92.0	118	£17.58
DHR-13/64S	5.159mm	30.0	57.0	118	£16.47
DHR-#6	5.182mm	64.0	95.0	118	£13.56
DHR-5.20	5.20mm	64.0	95.0	118	£23.80
DHR-#5	5.220mm	64.0	95.0	118	£13.56
DHR-5.25	5.25mm	64.0	95.0	118	£23.80
DHR-5.30	5.30mm	64.0	95.0	118	£23.80
DHR-#4	5.309mm	64.0	95.0	118	£13.56
DHR-5.40	5.40mm	64.0	95.0	118	£23.80
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-#3	5.41mm	64.0	95.0	118	£13.56
DHR-5.50	5.50mm	64.0	95.0	118	£23.80
DHR-7/32	5.556mm	64.0	95.0	118	£18.65
DHR-5.60	5.60mm	67.0	98.0	118	£25.59
DHR-#2	5.613mm	67.0	98.0	118	£14.76
DHR-5.70	5.70mm	67.0	98.0	118	£25.59
DHR-5.75	5.75mm	67.0	98.0	118	£25.59
DHR-#1	5.791mm	67.0	98.0	118	£14.76
DHR-5.80	5.80mm	67.0	98.0	118	£25.59
DHR-5.90	5.90mm	67.0	98.0	118	£27.16
DHR-A	5.944mm	67.0	98.0	118	£16.03
DHR-15/64	5.953mm	67.0	98.0	118	£19.12
DHR-6.00	6.00mm	67.0	98.0	118	£27.16
DHR-B	6.045mm	70.0	102.0	118	£16.03
DHR-C	6.10mm	70.0	102.0	118	£17.22
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-6.10	6.10mm	70.0	102.0	118	£27.16
DHR-6.20	6.20mm	70.0	102.0	118	£27.16
DHR-D	6.22mm	70.0	102.0	118	£17.22
DHR-6.25	6.25mm	70.0	102.0	118	£29.41
DHR-6.30	6.30mm	70.0	102.0	118	£29.41
DHR-E	6.35mm	70.0	102.0	118	£23.28
DHR-1/4	6.35mm	70.0	102.0	118	£23.28
DHR-6.40	6.40mm	73.0	105.0	118	£33.21
DHR-6.50	6.50mm	73.0	105.0	118	£33.21
DHR-F	6.528mm	73.0	105.0	118	£26.66
DHR-6.60	6.60mm	73.0	105.0	118	£33.21
DHR-G	6.629mm	73.0	105.0	118	£26.66
DHR-6.70	6.70mm	73.0	105.0	118	£33.21
DHR-H	6.746mm	73.0	105.0	118	£26.66
DHR-17/64	6.747mm	73.0	105.0	118	£26.66
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-6.75	6.75mm	73.0	105.0	118	£37.04
DHR-6.80	6.80mm	73.0	105.0	118	£37.04
DHR-6.90	6.90mm	73.0	105.0	118	£37.04
DHR-I	6.909mm	73.0	105.0	118	£30.03
DHR-7.00	7.00mm	73.0	105.0	118	£37.04
DHR-J	7.036mm	73.0	105.0	118	£30.03
DHR-7.10	7.10mm	75.0	108.0	118	£37.04
DHR-K	7.137mm	75.0	108.0	118	£30.03
DHR-9/32	7.144mm	75.0	108.0	118	£30.03
DHR-7.20	7.20mm	75.0	108.0	118	£37.04
DHR-7.25	7.25mm	75.0	108.0	118	£37.04
DHR-7.30	7.30mm	75.0	108.0	118	£37.04
DHR-L	7.366mm	75.0	108.0	118	£33.38
DHR-7.40	7.40mm	78.0	114.0	118	£40.82
DHR-M	7.45mm	78.0	111.0	118	£58.93
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-7.50	7.50mm	78.0	114.0	118	£40.82
DHR-19/64	7.541mm	78.0	111.0	118	£33.38
DHR-7.60	7.60mm	78.0	114.0	118	£40.82
DHR-N	7.65mm	78.0	111.0	118	£64.79
DHR-7.70	7.70mm	78.0	114.0	118	£40.82
DHR-7.75	7.75mm	78.0	114.0	118	£40.82
DHR-7.80	7.80mm	81.0	114.0	118	£44.59
DHR-7.90	7.90mm	81.0	114.0	118	£44.59
DHR-5/16	7.938mm	81.0	114.0	118	£36.70
DHR-8.00	8.00mm	81.0	114.0	118	£44.59
DHR-O	8.026mm	78.0	114.0	118	£64.79
DHR-8.20	8.20mm	84.0	117.0	118	£44.59
DHR-P	8.204mm	84.0	117.0	118	£71.67
DHR-8.25	8.25mm	84.0	117.0	118	£48.98
DHR-8.30	8.30mm	84.0	117.0	118	£48.98
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-21/64	8.334mm	84.0	117.0	118	£40.62
DHR-8.4	8.40mm	84.0	117.0	118	£48.98
DHR-8.40	8.40mm	87.0	121.0	118	£48.98
DHR-Q	8.433mm	87.0	121.0	118	£71.67
DHR-8.50	8.50mm	87.0	121.0	118	£53.38
DHR-8.60	8.60mm	87.0	121.0	118	£53.38
DHR-R	8.611mm	87.0	121.0	118	£71.67
DHR-8.70	8.70mm	87.0	121.0	118	£53.38
DHR-8.10	8.10mm	84.0	117.0	118	£44.59
DHR-11/32	8.731mm	87.0	121.0	118	£44.52
DHR-8.75	8.75mm	89.0	124.0	118	£53.38
DHR-8.80	8.80mm	89.0	124.0	118	£53.38
DHR-S	8.839mm	89.0	124.0	118	£78.56
DHR-8.90	8.90mm	89.0	124.0	118	£57.84
DHR-9.00	9.00mm	89.0	124.0	118	£57.84
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-T	9.093mm	89.0	124.0	118	£78.56
DHR-9.10	9.10mm	89.0	124.0	118	£57.84
DHR-23/64	9.128mm	89.0	105.0	118	£48.41
DHR-9.20	9.20mm	92.0	127.0	118	£57.84
DHR-9.25	9.25mm	92.0	127.0	118	£57.84
DHR-9.30	9.30mm	92.0	127.0	118	£62.22
DHR-U	9.347mm	92.0	127.0	118	£92.33
DHR-9.40	9.40mm	92.0	127.0	118	£62.22
DHR-9.50	9.50mm	92.0	127.0	118	£62.22
DHR-3/8	9.525mm	92.0	127.0	118	£52.30
DHR-V	9.576mm	92.0	127.0	118	£92.33
DHR-9.60	9.60mm	95.0	130.0	118	£62.22
DHR-9.70	9.70mm	95.0	130.0	118	£62.22
DHR-9.80	9.80mm	95.0	130.0	118	£67.27
DHR-W	9.804mm	95.0	130.0	118	£100.26
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-9.90	9.90mm	95.0	130.0	118	£72.42
DHR-25/64	9.922mm	95.0	130.0	118	£56.79
DHR-10.00	10.00mm	95.0	130.0	118	£77.48
DHR-X	10.084mm	95.0	130.0	118	£108.19
DHR-Y	10.262mm	98.0	133.0	118	£116.11
DHR-13/32	10.319mm	98.0	133.0	118	£61.29
DHR-Z	10.49mm	98.0	133.0	118	£116.11
DHR-10.50	10.50mm	100.0	136.0	118	£88.04
DHR-27/64	10.716mm	100.0	137.0	118	£65.78
DHR-11.00	11.00mm	103.0	140.0	118	£93.54
DHR-7/16	11.113mm	103.0	140.0	118	£70.28
DHR-11.50	11.50mm	106.0	143.0	118	£99.03
DHR-29/64	11.509mm	106.0	143.0	118	£75.14
DHR-15/32	11.906mm	110.0	146.0	118	£80.02
DHR-12.00	12.00mm	111.0	149.0	118	£99.03
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-31/64	12.303mm	111.0	149.0	118	£84.87
DHR-12.50	12.50mm	114.0	152.0	118	£99.03
DHR-1/2	12.70mm	114.0	152.0	118	£89.71
DHR-33/64	13.097mm	102.0	152.0	118	£116.57
DHR-17/32	13.494mm	102.0	152.0	118	£122.08
DHR-35/64	13.891mm	102.0	152.0	118	£132.06
DHR-9/16	14.288mm	102.0	152.0	118	£138.29
DHR-37/64	14.684mm	102.0	152.0	118	£138.85
DHR-19/32	15.081mm	102.0	152.0	118	£142.46
DHR-39/64	15.478mm	102.0	152.0	118	£156.46
DHR-5/8	15.875mm	102.0	152.0	118	£156.46
DHR-41/64	41/64mm	102.0	152.0	118	£167.23
DHR-21/32	16.669mm	102.0	152.0	118	£167.23
DHR-43/64	43/64mm	102.0	152.0	118	£189.92
DHR-11/16	17.463mm	102.0	152.0	118	£189.92
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-45/64	45/64mm	102.0	152.0	118	£213.14
DHR-23/32	18.256mm	102.0	152.0	118	£213.14
DHR-47/64	47/64mm	102.0	152.0	118	£229.43
DHR-3/4	19.05mm	102.0	152.0	118	£225.37
DHR-49/64	49/64mm	102.0	152.0	118	£245.71
DHR-25/32	19.844mm	102.0	152.0	118	£245.71
DHR-51/64	20.241mm	102.0	152.0	118	£262.65
DHR-13/16	20.638mm	102.0	152.0	118	£258.57
DHR-53/64	21.034mm	102.0	152.0	118	£274.19
DHR-27/32	21.431mm	102.0	152.0	118	£274.19
DHR-55/64	21.828mm	102.0	152.0	118	£283.58
DHR-7/8	22.225mm	102.0	152.0	118	£283.58
DHR-57/64	22.622mm	102.0	152.0	118	£294.46
DHR-29/32	23.019mm	102.0	152.0	118	£294.46
DHR-59/64	23.416mm	102.0	152.0	118	£324.87
Part No.	Description	Flute Length	O/A Length	Point Angle	Price
DHR-15/16	23.813mm	102.0	152.0	118	£324.87
DHR-61/64	24.209mm	102.0	152.0	118	£352.73
DHR-31/32	24.606mm	102.0	152.0	118	£352.73
DHR-63/64	25.003mm	102.0	152.0	118	£373.79
DHR-1	25.40mm	102.0	152.0	118	£373.79