ANSI HSS 12 Inch Extra Length Twist Drill Bits
Manufacturing process fully ground
Point angle 118
Material HSS or HSS-Co
Finish bright, amber
Diameter 1/8 - 3/4 inch
Fractional
Long Twist Drill Bit  Dia. Dec. Eq. Flute Length OAL
1/8 .1250 9 12
9/64 .1406 9 12
5/32 .1562 9 12
11/64 .1719 9 12
3/16 .1875 9 12
13/64 .2031 9 12
7/32 .2188 9 12
15/64 .2344 9 12
1/4 .2500 9 12
17/64 .2656 9 12
9/32 .2812 9 12
19/64 .2969 9 12
5/16 .3125 9 12
21/64 .3281 9 12
11/32 .3438 9 12
23/64 .3594 9 12
3/8 .3750 9 12
25/64 .3906 9 12
13/32 .4062 9 12
27/64 .4219 9 12
7/16 .4375 9 12
29/64 .4531 9 12
15/32 .4688 9 12
31/64 .4844 9 12
1/2 .5000 9 12
33/64 .5156 9 12
17/32 .5312 9 12
35/64 .5469 9 12
9/16 .5625 9 12
37/64 .5781 9 12
19/32 .5938 9 12
39/64 .6094 9 12
5/8 .6250 9 12
21/32 .6562 9 12
11/16 .6875 9 12
23/32 .7188 9 12
3/4 .7500 9 12

Note: Split point drills available from 1/8" and above sizes
Sizes over 1/2" are black oxide finish

ANSI HSS 18 Inch Extra Length Twist Drill Bits

Manufacturing process fully ground
Point angle 118 or 135 split point
Flute type N
Material HSS or HSS-Co
Finish bright, black oxide, amber
Diameter 1/4-1inch
Fractional
Long Twist Drill Bit  Dia. Dec. Eq. Flute Length OAL
1/4 .2500 13 18
17/64 .2656 13 18
9/32 .2812 13 18
19/64 .2969 13 18
5/16 .3125 13 18
21/64 .3281 13 18
11/32 .3438 13 18
23/64 .3594 13 18
3/8 .3750 13 18
25/64 .3906 13 18
13/32 .4062 13 18
27/64 .4219 13 18
7/16 .4375 13 18
29/64 .4531 13 18
15/32 .4688 13 18
31/64 .4844 13 18
1/2 .5000 13 18
33/64 .5156 13 18
17/32 .5312 13 18
35/64 .5469 13 18
9/16 .5625 13 18
37/64 .5781 13 18
19/32 .5938 13 18
39/64 .6094 13 18
5/8 .6250 13 18
21/32 .6562 13 18
11/16 .6875 13 18
23/32 .7188 13 18
3/4 .7500 13 18
25/32 .7812 13 18
13/16 .8125 13 18
7/8 .8750 13 18
15/16 .9375 13 18
1 1.0000 13 18

Note: Split point drills available from 1/8" and above sizes
Sizes over 1/2" are black oxide finish

We are a professional long twist drill bit supplier in China. We provide you with complete models of HSS twist drill bit, electric hammer drill bits, saw blades and so on. Besides, we serve our customers with OEM if requested. Our company is located in Hangzhou City, capital of Zhejiang Province, where we are near sea, land and air transportation facilities. This helps us to reduce the producing cost, and to offer you lower shipping charges. If you need this kind of products, please contact us!

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Frequently Asked Questions about HSS Twist Drill Bits

What are your HSS twist drill bits made of?

Our HSS twist drill bits are made of high-speed steel such as M2 (DIN 338 / DIN 340 / DIN 345) and M35 cobalt grades, in compliance with DIN and ANSI standards. Standard, reduced shank, taper shank and jobber length series are all available for metal drilling.

What is your MOQ?

MOQ depends on the product type and specification. Trial orders and mixed-container orders are welcome - contact us with your target items and we will confirm the MOQ in the quotation.

Do you accept OEM / ODM?

Yes. OEM and ODM cooperation is welcome, including your brand, packaging and specifications. As a manufacturer in Hangzhou, China since 2006, we support custom production for importers and wholesalers worldwide.

How can I get a quotation and delivery time?

Email ligenie@gmail.com, call +86-571-86758131 or WhatsApp +86 153 3654 6084 with the items and quantities you need. We reply with prices and a clear delivery date, and samples are available for quality checking before bulk orders.

More questions? See our full FAQ page or contact FANXI Tools.