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AYSWJSTDHSS-CO Straight Shank Drill STDSold0pcsThe WJ HSS-CO Straight Shank Drill STD is the family member built for stainless steel. The difference is the substrate: cobalt high-speed steel (HSS-CO) holds hardness better at temperature and is rated to HRC40, the highest among the uncoated drills here. For high-volume carbon steel the basic SD is more economical; for longer life choose the TiN-coated TiNSD (HRC30); for deep holes in stainless there is the cobalt SSDC, and for small-diameter deep holes the LSTD (diameter 1~3mm). Substrate HSS-CO, uncoated. Sizes cover diameter 0.5~13mm, flute length 6~91mm and overall length 27~152mm, in 140 variants. Made in Taiwan. Why cobalt? It raises hot hardness, which is exactly what work-hardening, heat-generating materials like stainless demand. What can it cut? Carbon and alloy steel, stainless steel, and aluminium, copper and other non-ferrous metals, up to HRC40. Typical applications: drilling stainless and galvanised parts, high-tensile plate, and production drilling where cutting heat runs high.

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HSS-CO Straight Shank Drill STD

The WJ HSS-CO Straight Shank Drill STD is the family member built for stainless steel.

Specifications (140 items)

Dia.

Flute length

Overall length

Depth ratio (×D)

Point angle

0.5~1.9

6~22

27~52

125~130

Expand this group (16 specs)

Part No.	Dia.	Flute length	Overall length
AYSWJSTD0.5	0.5	6	27
AYSWJSTD0.6	0.6	7	30
AYSWJSTD0.7	0.7	8	32
AYSWJSTD0.8	0.8	9	34
AYSWJSTD0.9	0.9	10	36
AYSWJSTD1	1	14	40
AYSWJSTD1.1	1.1	16	42
AYSWJSTD1.2	1.2	16	42
AYSWJSTD1.3	1.3	18	45
AYSWJSTD1.4	1.4	18	48
AYSWJSTD1.5	1.5	18	48
AYSWJSTD1_16	1/16"	20	50
AYSWJSTD1.6	1.6	20	50
AYSWJSTD1.7	1.7	20	50
AYSWJSTD1.8	1.8	22	52
AYSWJSTD1.9	1.9	22	52

2~5/32"

23~41

55~79

125~130

Expand this group (23 specs)

Part No.	Dia.	Flute length	Overall length
AYSWJSTD2	2	23	55
AYSWJSTD2.1	2.1	23	55
AYSWJSTD2.2	2.2	26	58
AYSWJSTD2.3	2.3	26	58
AYSWJSTD3_32	3/32"	26	58
AYSWJSTD2.4	2.4	28	61
AYSWJSTD2.5	2.5	28	61
AYSWJSTD2.6	2.6	30	64
AYSWJSTD2.7	2.7	30	64
AYSWJSTD2.8	2.8	31	67
AYSWJSTD2.9	2.9	34	71
AYSWJSTD3	3	34	71
AYSWJSTD3.1	3.1	34	71
AYSWJSTD1_8	1/8"	34	71
AYSWJSTD3.2	3.2	34	71
AYSWJSTD3.3	3.3	36	73
AYSWJSTD3.4	3.4	36	73
AYSWJSTD3.5	3.5	36	73
AYSWJSTD3.6	3.6	38	76
AYSWJSTD3.7	3.7	38	76
AYSWJSTD3.8	3.8	38	76
AYSWJSTD3.9	3.9	41	79
AYSWJSTD5_32	5/32"	41	79

4~5.9

43~54

83~98

130

Expand this group (22 specs)

Part No.	Dia.	Flute length	Overall length
AYSWJSTD4	4	43	83
AYSWJSTD4.1	4.1	43	83
AYSWJSTD4.2	4.2	43	83
AYSWJSTD4.3	4.3	43	83
AYSWJSTD4.4	4.4	45	86
AYSWJSTD4.5	4.5	45	86
AYSWJSTD4.6	4.6	45	86
AYSWJSTD4.7	4.7	47	89
AYSWJSTD3_16	3/16"	47	89
AYSWJSTD4.8	4.8	47	89
AYSWJSTD4.9	4.9	50	92
AYSWJSTD5	5	50	92
AYSWJSTD5.1	5.1	50	92
AYSWJSTD5.2	5.2	51	95
AYSWJSTD5.3	5.3	51	95
AYSWJSTD5.4	5.4	51	95
AYSWJSTD5.5	5.5	51	95
AYSWJSTD7_32	7/32"	51	95
AYSWJSTD5.6	5.6	54	98
AYSWJSTD5.7	5.7	54	98
AYSWJSTD5.8	5.8	54	98
AYSWJSTD5.9	5.9	54	98

6~5/16"

56~65

102~114

130

Expand this group (23 specs)

Part No.	Dia.	Flute length	Overall length
AYSWJSTD6	6	56	102
AYSWJSTD6.1	6.1	56	102
AYSWJSTD6.2	6.2	56	102
AYSWJSTD6.3	6.3	56	102
AYSWJSTD1_4	1/4"	56	102
AYSWJSTD6.4	6.4	58	105
AYSWJSTD6.5	6.5	58	105
AYSWJSTD6.6	6.6	58	105
AYSWJSTD6.7	6.7	58	105
AYSWJSTD6.8	6.8	58	105
AYSWJSTD6.9	6.9	58	105
AYSWJSTD7	7	58	105
AYSWJSTD7.1	7.1	60	108
AYSWJSTD9_32	9/32"	60	108
AYSWJSTD7.2	7.2	60	108
AYSWJSTD7.3	7.3	60	108
AYSWJSTD7.4	7.4	62	111
AYSWJSTD7.5	7.5	62	111
AYSWJSTD7.6	7.6	62	111
AYSWJSTD7.7	7.7	65	114
AYSWJSTD7.8	7.8	65	114
AYSWJSTD7.9	7.9	65	114
AYSWJSTD5_16	5/16"	65	114

8~9.9

65~76

114~130

130

Expand this group (22 specs)

Part No.	Dia.	Flute length	Overall length
AYSWJSTD8	8	65	114
AYSWJSTD8.1	8.1	67	117
AYSWJSTD8.2	8.2	67	117
AYSWJSTD8.3	8.3	67	117
AYSWJSTD8.4	8.4	70	121
AYSWJSTD8.5	8.5	70	121
AYSWJSTD8.6	8.6	70	121
AYSWJSTD8.7	8.7	70	121
AYSWJSTD11_32	11/32"	70	121
AYSWJSTD8.8	8.8	71	124
AYSWJSTD8.9	8.9	71	124
AYSWJSTD9	9	71	124
AYSWJSTD9.1	9.1	71	124
AYSWJSTD9.2	9.2	74	127
AYSWJSTD9.3	9.3	74	127
AYSWJSTD9.4	9.4	74	127
AYSWJSTD9.5	9.5	74	127
AYSWJSTD3_8	3/8"	74	127
AYSWJSTD9.6	9.6	76	130
AYSWJSTD9.7	9.7	76	130
AYSWJSTD9.8	9.8	76	130
AYSWJSTD9.9	9.9	76	130

10~15/32"

76~87

130~146

130

Expand this group (22 specs)

Part No.	Dia.	Flute length	Overall length
AYSWJSTD10	10	76	130
AYSWJSTD10.1	10.1	78	133
AYSWJSTD10.2	10.2	78	133
AYSWJSTD10.3	10.3	78	133
AYSWJSTD13_32	13/32"	78	133
AYSWJSTD10.4	10.4	78	133
AYSWJSTD10.5	10.5	80	137
AYSWJSTD10.6	10.6	80	137
AYSWJSTD10.7	10.7	80	137
AYSWJSTD10.8	10.8	82	140
AYSWJSTD10.9	10.9	82	140
AYSWJSTD11	11	82	140
AYSWJSTD11.1	11.1	82	140
AYSWJSTD11.2	11.2	85	143
AYSWJSTD11.3	11.3	85	143
AYSWJSTD11.4	11.4	85	143
AYSWJSTD11.5	11.5	85	143
AYSWJSTD11.6	11.6	87	146
AYSWJSTD11.7	11.7	87	146
AYSWJSTD11.8	11.8	87	146
AYSWJSTD11.9	11.9	87	146
AYSWJSTD15_32	15/32"	87	146

12~13

89~91

149~152

130

Expand this group (12 specs)

Part No.	Dia.	Flute length	Overall length
AYSWJSTD12	12	89	149
AYSWJSTD12.1	12.1	89	149
AYSWJSTD12.2	12.2	89	149
AYSWJSTD12.3	12.3	89	149
AYSWJSTD12.4	12.4	91	152
AYSWJSTD12.5	12.5	91	152
AYSWJSTD12.6	12.6	91	152
AYSWJSTD12.7	12.7	91	152
AYSWJSTD1_2	1/2"	91	152
AYSWJSTD12.8	12.8	91	152
AYSWJSTD12.9	12.9	91	152
AYSWJSTD13	13	91	152

Specification Range

Diameter	0.5~13mm
Flute length	6~91mm
Overall length	27~152mm

Product Description

The WJ HSS-CO Straight Shank Drill STD is the family member built for stainless steel. The difference is the substrate: cobalt high-speed steel (HSS-CO) holds hardness better at temperature and is rated to HRC40, the highest among the uncoated drills here. For high-volume carbon steel the basic SD is more economical; for longer life choose the TiN-coated TiNSD (HRC30); for deep holes in stainless there is the cobalt SSDC, and for small-diameter deep holes the LSTD (diameter 1~3mm). Substrate HSS-CO, uncoated. Sizes cover diameter 0.5~13mm, flute length 6~91mm and overall length 27~152mm, in 140 variants. Made in Taiwan. Why cobalt? It raises hot hardness, which is exactly what work-hardening, heat-generating materials like stainless demand. What can it cut? Carbon and alloy steel, stainless steel, and aluminium, copper and other non-ferrous metals, up to HRC40. Typical applications: drilling stainless and galvanised parts, high-tensile plate, and production drilling where cutting heat runs high.

Workpiece Materials & Hardness

Steel (P)
Stainless steel (M)
Non-ferrous metals (N)

Max. workpiece hardness HRC40

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