Dolphin - HSS E Drills / Threading Taps

Hand & Short Machine Taps

DOLPHIN HSS Threading taps, are available in a large variety, Straight fluted, Spiral fluted, Spiral Point, Roll form Taps. Short and long, Hand / Machine taps.
Available in Metric: Fine and coarse Pitch. Inches: BSW, UNC, UNF, BSF, BSP, NPT, UNS, BSPT, NPTF, UNEF threads and many more as per customer specification.

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Metric Coarse Pitch

NOMINAL DIA	PITCH	Thread L	OAL L	SHank	Square
3	0.5	11	48	3.15	2.5
3.5	0.6	13	50	3.55	2.8
4	0.7	13	53	4	3.15
4.5	0.75	13	53	4.5	3.55
5	0.8	16	58	5	4
6	1	19	66	6.3	5
7	1	19	66	7.1	5.6
8	1.25	22	72	8	6.3
9	1.25	22	72	9	7.1
10	1.5	24	80	10	8
11	1.5	25	85	8	6.3
12	1.75	29	86	9	7.1
14	2	30	95	11.2	9
16	2	32	102	12.5	10
18	2.5	37	112	14	11.2
20	2.5	37	112	14	11.2
22	2.5	38	118	16	12.5
24	3	45	130	18	14
25	3	45	130	20	16
27	3	45	135	20	16
30	3.5	48	138	20	16
33	3.5	51	151	22.4	18
36	4	57	162	25	20
39	4	60	170	28	22.4
42	4.5	60	170	28	22.4
45	4.5	67	187	31.5	25
48	5	67	187	31.5	25
52	5	70	200	35.5	28
56	5.5	70	200	35.5	28
60	5.5	76	221	40	31.5
64	6	79	224	40	31.5
68	6	79	234	45	31.5

Metric Fine pitch available upto 150mm

Nominal Dia	BSW TPI	UNC TPI	BSF TPI	UNF TPI	Thread L	Oal L	Shank	Square
1/8"	40				11	48	3.15	2.5
3/16"	24		32		16	48	5	4
1/4"	20	20	26	28	19	66	6.3	5
5/16"	18	18	22	24	22	72	8	6.3
3/8"	16	16	20	24	24	80	10	8
7/16"	14	14	18	20	25	85	8	6.3
1/2"	12	13	16	20	29	89	9	7.1
9/16"	12	12	16	18	30	95	11.2	9
5/8"	11	11	14	18	32	102	12.5	10
11/16"	11		14		37	112	14	11.2
3/4"	10	10	12	16	37	112	14	11.2
7/8"	9	9	11	14	38	118	16	12.5
1"	8	8	10	12	45	130	18	14
1.1/8"	7	7	9	12	48	138	20	16
1.1/4"	7	7	9	12	51	151	22.4	18
1.3/8"	6	6	8	12	57	162	25	20
1.1/2"	6	6	8	12	60	170	28	22.4
1.3/4"	5	5	8		67	187	31.5	25
2"	4.1/2	4.1/2	7		70	200	35.5	28
2.1/4"	4	4.1/2	7		76	221	40	31.5
2.1/2"	4	4	6		79	224	40	31.5
2.3/4"	3.1/2	4	6		79	234	45	35.5
3"	3.1/2	4	5		83	258	50	40
3.1/4"	3.1/4	4			86	261	50	40
3.1/2"	3.1/4	4			86	261	50	40
3.3/4"	3	4			89	279	56	45
4"	3	4			89	279	56	45

Nominal Dia	BSP TPI	NPT TPI	BSPT TPI	Thread L	Oal L	Shank	Square
1/16"	28	27	28	11/16"	2.1/8"	0.318	0.238
1/8"	28	27	28	3/4"	2.1/8"	0.318	0.238
1/4"	19	18	19	1.1/16"	2.7/16"	0.429	0.322
3/8"	19	18	19	1.1/16"	2.9/16"	0.542	0.406
1/2"	14	14	14	1.3/8"	3.1/8"	0.687	0.515
3/4"	14	14	14	1.3/8"	3.1/4"	0.906	0.679
7/8"	14			1.9/16"	3.1/2"	1.093	0.812
1"	11	11.50	11	1.3/4"	3.3/4"	1.125	0.843
1.1/4"	11	11.50	11	1.3/4"	4"	1.312	0.984
1.1/2"	11	11.50	11	1.3/4"	4.1/4"	1.5	1.125
2"	11	11.50	11	1.3/4"	4.1/2"	1.875	1.406
2.1/4"	11			2.1/8"	5"	2	1.5
2.1/2"	11	8.00	11	2.9/16"	5.1/2"	2.25	1.687
2.3/4"	11	8.00		2.9/16"	5.3/4"	2.375	1.781
3"	11	8.00	11	2.5/8"	6"	2.625	1.968
3.1/2"	11	8.00	11	2.11/16"	6.1/2"	2.812	2.108
4"	11	8.00	11	2.3/4"	6.3/4"	3	2.25

Variation in length, dimension might be observed batch to batch. Fine pitch, Long series, non standard taps also available on request

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Jobber Series (HSS E)
Ground Finish (IS: 5101/DIN : 338)

DOLPHIN HSS E cobalt drills offer high performance drilling over conventional HSS Drills. Better suited to drill hard steel jobs.

DIA IN MM	FLUTE LENGTH	OVERALL LENGTH
1	12	34
1.5	18	40
1.60 (1/16")	20	43
1.8	22	46
2.00 (5/64")	24	49
2.1	24	49
2.2	27	53
2.3	27	53
2.4	30	57
2.5	30	57
2.6	30	57
2.7	33	61
2.78 (7/64")	33	61
2.8	33	61
2.9	33	61
3	33	61
3.1	36	65
3.20 (1/8")	36	65
3.3	36	65
3.4	39	70
3.5	39	70
3.60 (9/64")	39	70
3.7	39	70
3.8	43	75
3.9	43	75
4.00 (5/32")	43	75
4.1	43	75
4.2	43	75
4.3	47	80
4.37 (11/64")	47	80
4.4	47	80
4.5	47	80
4.6	47	80

DIA IN MM	FLUTE LENGTH	OVERALL LENGTH
4.7	47	80
4.75 (3/16")	52	86
4.8	52	86
4.9	52	86
5	52	86
5.8	57	93
5.9	57	93
6.00 (15/64")	57	93
6.1	63	101
6.2	63	101
6.3	63	101
6.40 (1/4")	63	101
6.5	63	101
6.6	63	101
6.7	63	101
6.75 (17/64")	69	109
6.8	69	109
6.9	69	109
7	69	109
7.1	69	109
7.20 (9/32")	69	109
7.3	69	109
7.4	69	109
7.5	69	109
7.60 (19/64")	75	117
7.7	75	117
7.8	75	117
7.9	75	117
8.00 (5/16")	75	117
8.1	75	117
8.2	75	117
8.3	75	117
8.40 (21/64")	75	117

DIA IN MM	FLUTE LENGTH	OVERALL LENGTH
8.5	75	117
8.6	81	125
8.7	81	125
8.75 (11/32")	81	125
8.8	81	125
8.9	81	125
9	81	125
9.10 (23/64")	81	125
9.2	81	125
9.3	81	125
9.4	81	125
9.5	81	125
9.60 (3/8")	87	133
9.7	87	133
9.8	87	133
9.9	87	133
10.00 (25/64")	87	133
10.2	87	133
10.25 (13/32")	87	133
10.5	87	133
10.8	94	142
11	94	142
11.10 (7/16")	94	142
11.50 (29/64")	94	142
12	101	151
12.5	101	151
12.70 (1/2")	101	151
13	101	151

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Cutting Tools

HSS E Drills / Threading Taps

Hand & Short Machine Taps

Jobber Series (HSS E) Ground Finish (IS: 5101/DIN : 338)

Jobber Series (HSS E)
Ground Finish (IS: 5101/DIN : 338)