Standard Specifications

Unified Tap Series

United Straight Flute Machine Tap with Thick Shank (ISO 529 Standard Overall Dimensions)

Straight FLUTE TAPS

Features

The product overall dimension conforms to ISO 529.

Straight FLUTE TAPS

Specifications

(unit: mm)

Thread Size	TYPE	T.P.I	L Overall length	l Thread Length	l1 Cutting Length	ln Length to neck	d₀ Shank diameter	K Square size	FLUTES
10-24UNC	1	24	58	16	4.5P	23.5	5.0	4.0	3
12-24UNC	1	24	62	17	4.5P	23.5	5.6	4.5	3
1/4-20UNC	1	20	66	19	4.5P	29	6.3	5.0	3
1/4-28UNF	1	28	66	19	4.5P	29	6.3	5.0	3
5/16-18UNC	2	18	72	22	4.5P	35	8.0	6.3	3
5/16-24UNF	2	24	72	22	4.5P	35	8.0	6.3	3
3/8-16UNC	2	16	80	24	4.5P	36	10.0	8.0	3/4
3/8-24UNF	2	24	80	24	4.5P	36	10.0	8.0	3/4

Unified Tap Series

United Straight Flute Machine Tap with Thick Shank (ISO 529 Standard Overall Dimensions)

Straight FLUTE TAPS

Features

The product overall dimension conforms to ISO 529.

Straight FLUTE TAPS

Specifications

(unit: mm)

Thread Size	T.P.I	L Overall length	l Thread Length	l1 Cutting Length	d₀ Shank diameter	K Square size	FLUTES
5/16-18UNC	18	72	22	4.5P	6.3	5.0	3
5/16-24UNF	24	72	22	4.5P	6.3	5.0	3
3/8-16UNC	16	80	24	4.5P	8.0	6.3	3/4
3/8-24UNF	24	80	24	4.5P	8.0	6.3	3/4
7/16-14UNC	14	85	25	4.5P	8.0	6.3	4
7/16-20UNF	20	85	25	4.5P	8.0	6.3	4
1/2-13UNC	13	89	29	4.5P	9.0	7.1	4
1/2-20UNF	20	89	29	4.5P	9.0	7.1	4
9/16-12UNC	12	95	30	4.5P	11.2	9.0	4
9/16-18UNF	12	95	30	4.5P	11.2	9.0	4
5/8-11UNC	11	102	32	4.5P	12.5	10.0	4
5/8-18UNF	18	102	32	4.5P	12.5	10.0	4
3/4-10UNC	10	112	37	4.5P	14.0	11.2	4
3/4-16UNF	16	112	37	4.5P	14.0	11.2	4
7/8-9UNC	9	118	38	4.5P	16.0	12.5	4
7/8-14UNF	14	118	38	4.5P	16.0	12.5	4
1-8UNC	8	130	45	4.5P	18.0	14.0	4
1-12UNF	12	130	45	4.5P	18.0	14.0	4
11/8-7UNC	7	138	48	4.5P	20.0	16.0	4
11/8-12UNF	12	127	37	4.5P	20.0	16.0	4
11/4-7UNC	7	151	51	4.5P	22.4	18.0	4
11/4-12UNF	12	137	37	4.5P	22.4	18.0	4
13/8-6UNC	6	162	57	4.5P	25.0	20.0	4
13/8-12UNF	12	144	39	4.5P	25.0	20.0	4
11/2-6UNC	6	170	60	4.5P	28.0	22.4	6
11/2-12UNF	12	149	39	4.5P	28.0	22.4	6
13/4-5UNC	5	187	67	4.5P	31.5	25.0	6

Unified Tap Series

United Spiral Flute Machine Tap with Thick Shank (ISO 529 Standard Overall Dimensions)

SPIRAL FLUTE TAPS

Features

The product overall dimension conforms to ISO 529.

SPIRAL FLUTE TAPS

Specifications

(unit: mm)

Thread Size	TYPE	T.P.I	L Overall length	l Thread Length	l1 Cutting Length	ln Length to neck	d₀ Shank diameter	K Square size	FLUTES
10-24UNC	1	24	58	16	2.5P	23.5	5.0	4.0	3
12-24UNC	1	24	62	17	2.5P	23.5	5.6	4.5	3
1/4-20UNC	1	20	66	19	2.5P	29	6.3	5.0	3
1/4-28UNF	1	28	66	19	2.5P	29	6.3	5.0	3
5/16-18UNC	2	18	72	22	2.5P	35	8.0	6.3	3
5/16-24UNF	2	24	72	22	2.5P	35	8.0	6.3	3
3/8-16UNC	2	16	80	24	2.5P	36	10.0	8.0	3
3/8-24UNF	2	24	80	24	2.5P	36	10.0	8.0	3

Unified Tap Series

United Spiral Flute Machine Tap with Thin Shank (ISO 529 Standard Overall Dimensions)

SPIRAL FLUTE TAPS

Features

The product overall dimension conforms to ISO 529.

SPIRAL FLUTE TAPS

Specifications

(unit: mm)

Thread Size	T.P.I	L Overall length	l Thread Length	l1 Cutting Length	d₀ Shank diameter	K Square size	FLUTES
5/16-18UNC	18	72	22	2.5P	6.3	5.0	3
5/16-24UNF	24	72	22	2.5P	6.3	5.0	3
3/8-16UNC	16	80	24	2.5P	8.0	6.3	3
3/8-24UNF	24	80	24	2.5P	8.0	6.3	3
7/16-14UNC	14	85	25	2.5P	8.0	6.3	3
7/16-20UNF	20	85	25	2.5P	8.0	6.3	3
1/2-13UNC	13	89	29	2.5P	9.0	7.1	3
1/2-20UNF	20	89	29	2.5P	9.0	7.1	3
9/16-12UNC	12	95	30	2.5P	11.2	9.0	4
9/16-18UNF	12	95	30	2.5P	11.2	9.0	4
5/8-11UNC	11	102	32	2.5P	12.5	10.0	4
5/8-18UNF	18	102	32	2.5P	12.5	10.0	4
3/4-10UNC	10	112	37	2.5P	14.0	11.2	4
3/4-16UNF	16	112	37	2.5P	14.0	11.2	4

Unified Tap Series

United Spiral Point Machine Tap with Thick Shank (ISO 529 Standard Overall Dimensions)

Spiral Point Taps

Features

The product overall dimension conforms to ISO 529.

Spiral Point Taps

Specifications

(unit: mm)

Thread Size	TYPE	T.P.I	L Overall length	l Thread Length	l1 Cutting Length	ln Length to neck	d₀ Shank diameter	K Square size	FLUTES
10-24UNC	1	24	58	16	5.5P	23.5	5.0	4.0	3
12-24UNC	1	24	62	17	5.5P	23.5	5.6	4.5	3
1/4-20UNC	1	20	66	19	5.5P	29	6.3	5.0	3
1/4-28UNF	1	28	66	19	5.5P	29	6.3	5.0	3
5/16-18UNC	2	18	72	22	5.5P	35	8.0	6.3	3
5/16-24UNF	2	24	72	22	5.5P	35	8.0	6.3	3
3/8-16UNC	2	16	80	24	5.5P	36	10.0	8.0	3
3/8-24UNF	2	24	80	24	5.5P	36	10.0	8.0	3

Unified Tap Series

United Thread Spiral Point Machine Tap with Thin Shank (ISO 529 Standard Overall Dimensions)

Spiral Point Taps

Features

The product overall dimension conforms to ISO 529.

Spiral Point Taps

Specifications

(unit: mm)

Thread Size	T.P.I	L Overall length	l Thread Length	l1 Cutting Length	d₀ Shank diameter	K Square size	FLUTES
5/16-18UNF	18	72	22	5.5P	6.3	5.0	3
5/16-24UNF	24	72	22	5.5P	6.3	5.0	3
3/8-16UNC	16	80	24	5.5P	8.0	6.3	3
3/8-24UNF	24	80	24	5.5P	8.0	6.3	3
7/16-14UNC	14	85	25	5.5P	8.0	6.3	3
7/16-20UNF	20	85	25	5.5P	8.0	6.3	3
1/2-13UNC	13	89	29	5.5P	9.0	7.1	3
1/2-20UNF	20	89	29	5.5P	9.0	7.1	3
9/16-12UNC	12	95	30	5.5P	11.2	9.0	4
9/16-18UNF	12	95	30	5.5P	11.2	9.0	4
5/8-11UNC	11	102	32	5.5P	12.5	10.0	4
5/8-18UNF	18	102	32	5.5P	12.5	10.0	4
3/4-10UNC	10	112	37	5.5P	14.0	11.2	4
3/4-16UNF	16	112	37	5.5P	14.0	11.2	4
7/8-9UNC	9	118	38	5.5P	16.0	12.5	4
7/8-14UNF	14	118	38	5.5P	16.0	12.5	4