Drive screws round head t...

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Drive screws round head type U, inch sizes

Dimensions in inches - source ASME B18.6.3 table 51
Publication date: 2010
Nominal size or basic screw diameter		Number of thread starts	A max	A min	H max	H min	P min	D max	D min	Hole diameter recommended
00	0.06	6	0.099	0.09	0.034	0.026	0.046	0.06	0.057	0.052
0	0.075	6	0.127	0.118	0.049	0.041	0.06	0.075	0.072	0.067
2	0.1	8	0.162	0.146	0.069	0.059	0.08	0.1	0.097	0.086
4	0.116	7	0.211	0.193	0.086	0.075	0.092	0.116	0.112	0.104
6	0.14	7	0.26	0.24	0.103	0.091	0.112	0.14	0.136	0.12
7	0.154	8	0.285	0.264	0.11	0.099	0.122	0.154	0.15	0.136
8	0.167	8	0.309	0.287	0.12	0.107	0.132	0.167	0.162	0.144
10	0.182	8	0.359	0.334	0.137	0.123	0.146	0.182	0.177	0.161
12	0.212	8	0.408	0.38	0.153	0.139	0.173	0.212	0.206	0.191
14	0.242	9	0.457	0.429	0.17	0.155	0.198	0.242	0.236	0.221
5/16	0.315	11	0.59	0.557	0.216	0.198	0.267	0.315	0.309	0.295
3/8	0.378	12	0.708	0.67	0.256	0.237	0.329	0.378	0.371	0.358


Nominal screw length L	1/8	3/16	1/4	5/16	3/8	1/2	5/8	3/4	1 and over
Pilot length ± 0.015, S	0.047	0.047	0.047	0.047	0.062	0.062	0.078	0.078	0.125

Full list of Suppliers of Drive screws round head type U, inch sizes

Metallic drive screws are designated Type U. They shall have multiple start threads of a large helix, angle with a pilot point. These screws are intended for making permanent fastenings in metal and plastics, when forced into the work under pressure.

Italy

Buora d.p.u. S.r.l.

Founded in 1969, Buora D.P.U. is a distributor certified following ISO 9001.

The company offers the complete range of high strength fasteners, ready on stock, both coarse and fine pitches with metric and inch threads.

Distributor of prestigious brands such as UNBRAKO and NORD-LOCK, for Buora D.P.U. the service always comes first, therefore there is not minimum quantity required.

Dimensions in INCHES - source ASME B18.6.3 TABLE 45 for type TRS Tapping Screws
Nominal screw size	Basic screw diameter	Major or C diameter (max)	P Point diameter (max)
2-56	0.086	0.0875	0.07
3-48	0.099	0.101	0.081
4-40
5-40
6-32
8-32
10-24
10-32
12-24
1/4-20
5/16-18
3/8-16
7-16-14
1/2-20

Dimensions in INCHES - source ASME B18.6.3 TABLE 45 for type TRS Tapping Screws
Nominal screw size	Basic screw diameter	Major or C diameter (max)	P Point diameter (max)
2-56	0.086	0.0875	0.07
3-48	0.099	0.101	0.081
4-40
5-40
6-32
8-32
10-24
10-32
12-24
1/4-20
5/16-18
3/8-16
7-16-14
1/2-20

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Suppliers of Drive screws round head type U, inch sizes

Technical data

Standard ASME B18.6.3 TABLE 51

Standard ASME B18.6.3

Details

Buora d.p.u. S.r.l.

Earnest Machine

Fürniss GmbH

Peter Schröder GmbH

Pfitzer Verbindungstechnik Gmbh

ScrewCorner Fastener - Superstore

Smith Bullough