1、AN AMERICAN NATIONAL STANDARD T-Slots, Their Bolts, Nuts, and 4 Tongues ANSI/ASME B5.1M - 1985 (REVISION OF ANSI 65.1-1975) - . REAFFIRMED 1998 FOR CURRENT COMMITFEE PERSONNEL PLEASE SEE ASME MANUAL AS-1 1 SPONSORED AND PUBLISHED BY THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS United Engineering Cen
2、ter 345 East 47th Street New York, N. Y. 1001 7 Date of Issuance: September 15, 1986 This Standard will be revised when the Society approves the issuance of a new edition. There will be no addenda or written interpretations of the requirements of this Standard issued to this Edition. This code or st
3、andard was developed under procedures accredited as meeting the criteria for American National Standards. The Consensus Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an oppor- tunity to participate. The proposed c
4、ode or standard was made available for public review and comment which provides an opportunity for additional public input from industry, academia, reg- ulatory agencies, and the public-at-large. ASME does not “approve,“ “rate,“ or “endorse“ any item, construction, proprietary device, or activity. A
5、SME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent, nor assume any such lia
6、bility. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s.1 or person(s) affiliated with industry is not t
7、o be interpreted as government or industry endorsement of this code or standard. ASME accepts responsibility for only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual vol- unteers. No part of this docu
8、ment may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Copyright 0 1986 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. I FOREWORD (This Foreword is not part of ANSVASME B5.1M-19
9、85.) Work on the standardization of T-slots started in 1924 and a tentative standard was published in 1927. The first official American Standard for T-slots came in 1941. This was last revised in 1949. The 1975 revision continued the basic sizes originally established. However, all.dimensions except
10、 the nominal T-bolt size were converted to decimal inches in recognition of the increas- ing preference of industry for decimals. Much material that was originally included to cover the transitional period has been deleted. A lettering system for the figures has been adopted that should facilitate c
11、ross reference be- tween tables. In this system, comparable dimensions bear the same letter with a subscript indicating table number. Thus, A, is width of T-slot throat, A2 is diameter of T-bolt to fit that throat, and A3 is width of T-nut tongue to fit that throat. Metric T-slots, as they have been
12、 standardized by ISO/TC39, Machine Tools, have been placed side by side with the inch-sized T-slots. Interchangeability is possible between corre- sponding sizes of the two measuring systems with the exception of the locating tongue and T- slot throat dimensions, and the difference in the fastening
13、threads on T-bolts. The listing of T-slots and T-bolts in IS0 299-1973, although essentially identical to sizes listed in this Stan- dard, are rejected because they are shown with fractional dimensions. The spacing of T-slots in machine tool components as given in IS0 299-1973 is likewise rejected f
14、ollowing consensus of U.S. builders and users of machine tools. This Standard accepts the tolerance codes of IS0 286 for metric sizes of T-slots only. Information relative to cutters for T-slots has been deleted to avoid duplication and possible conflict with information contained in ANWASME B94.19,
15、.Milling Cutters and End Mills. Following approval by the Standards Committee, the 1975 revision was presented to the sponsor organizations and to ANSI for approval and designation as an American National Standard. This was granted on August 8, 1975. The 1985 revision was approved as an American Nat
16、ional Standard on December 12, 1985. 111 . Intentionally left blank ASME STANDARDS COMMITTEE B5 Machine Tools, Components, Elements, Performance, and Equipment (The following is the roster of the Committee at the time of approval of this Standard). OFFICERS R. T. Woythal, Vice Chairman, Group A W. S
17、. Roorda, Vice Chairman, Group B H. Cooper, Vice Chairman, Group C W. R. Daisak, Secretary COMMITTEE PERSONNEL THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS F. S. Blackall, The Taft-Pierce Manufacturing Co., Woonsocket, Rhode Island DEFENSE INDUSTRIAL PLANT EQUIPMENT CENTER J. W. Lynch, Defense Logis
18、tics Agency. Memphis, Tennessee D. Williams, Alternate, Defense Logistics Agency, Memphis, Tennessee NATIONAL MACHINE TOOL BUILDERS ASSOCIATION V. R. Walser, Giddings and to the bolts, nuts, and tongues used in screws such slots. ANWASME B94.19, Milling Cutters and End Mills This Standard applies to
19、 T-slots as used on machine Screw Threads 2 DEFINITIONS T-slot - a slot with a narrow throat near the surface and a wider space (called headspace) further from the sur- face so that clamping can be effected aganst the shoulder at the inside end of the throat T-bolt - a bolt with a square head that f
20、its in the head- space of a T-slot with a shank which protrudes through the throat and to which the fixture is attached T-nut - a square nut which fits the headspace of a T-slot and has a tongue fitting in the throat. A T-nut is tapped to take a stud of smaller diameter than the throat of the slot.
21、solid tongue - a projection on a fixture or attachment designed to locate in the throat of a T-slot inserted tongue - a tongue which is inserted in a seat in the base of a fixture and projects to locate the fixture- in the throat of a T-slot Publisher: ASME United Engineering Center 345 East 47th St
22、reet New York, NY 10017 Orders: ASME Order Department 22 Law Drive Box 2300 Fairfield, NJ 07007-2300 . IS0 263-1973, IS0 Inch Screw Threads IS0 286-1962, System of Limits and Fits, Part I IS0 965-1973, General Purpose Metric Screw Threads Publisher: International Organization for Standardization Gen
23、eva, Switzerland Orders: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 3 REFERENCES 4 DIMENSIONS The latest editions of the following American Na- Suggested dimensions for T-slots, T-bolts, T-nuts, tional Standards apply: tongue seats, inserted tongues, and solid tongu
24、es are ANSUASME B1.1, Unified Inch Screw Threads given in Tables 1 through 4. 1 ANSI/ASME B5.1 M- 1985 AN AMERICAN NATIONAL STANDARD T-SLOTS, THEIR BOLTS, NUTS, AND TONGUES 2 I TABLE 1, T-SLOTS Headspace Dimensions Rounding or Breaking of Corners Note (311 Nominal T- Width of Width B, Depth C1 Depth
25、 of Throat Dl Bolt Size Throat A, in. mm Note (1 )I Note (211 in. mm in. mm in. mm in. mm in. mm min. max. min. max. min. max. min. max. min. max. min. max. max. max. max. max. max. max. pp R1 W, U1 R1 Wl J1 . . . . . . . 4 . 5 . 10 11 3 3.5 . 4.5 7 0.5 0.8 0.8 . . . . . . . . . 5 “ 6 . 11 12.5 56 5
26、 8 0.5 0.8 0.8 0.250 6 0.282 8 0.500 0.562 14.5 16 0.203 0.234 7 8 0.125 0.375 7 11 0.02 0.02 0.03 0.5 0.8 0.8 0.312 8 0.344 10 0.594 0.656 16 18 0.234 0.266 7 8 0.156 0.438 9 14 0.02 0.03 0.03 0.5 0.8 0.8 0.375 10 0.438 12 0.719 0.781 19 21 0.297 0.328 8 9 0.219 0.562 11 17 0.02 0.03 0.03 0.5 0.8 0
27、.8 W 0.500 12 0.562 14 0.906 0.969 23 25 0.359 0.391 9 11 0.312 0.688 12 19 0.02 0.03 0.03 0.5 0.8 . 0.8 0.625 16 0.688 18 1.188 1.250 30 32 0.453 0.484 12 14 0.438 0.875 16 24 0.03 0.03 0.05 0.8 0.8 1.3 0.750 20 0,812 22 1.375 1.469 37 40 0.594 .0.625 16 18 0.562 1.062 20 29 0.03 0.03 0.05 0.8 0.8
28、1.3 1 .OOO 24 1.062 28 1.750 1.844 46 50 0.781 0.828 20 22 0.750 1.250 26 36 0.03 0.06 0.05 0.8 1.5 1.3 1.250 30 1.312 36 2.125 2.219 56 60 1.031 1.094 25 28 1.000 1.562 33 46 0.03 0.06 0.05 0.8 1.5 1.3 1.500 36 1.562 42 2.562 2.656 68 72 1.281 1.344 32 35 1.250 1.938 39 53 0.03 0.06 0.05 0.8 1.5 1.
29、3 . . . . . . . . 42 . . . 48 80 85 36 40 44 59 1.5 2.5 2 48 54 . . 90 95 40 44 50 66 1.5 2.5 2 . . . . . . . . NOTES: (1) Width of tongue (tenon) to be used with the above T-slots will be found in Table 4. (2) Throat dimensions are basic. When slots are intended to be used for holding only, toleran
30、ces can be 0.0 + 0.010 in. or H12 (3) Corners of T-slots may be square, or may be rounded or broken to the indicated maximum dimensions at the manufacturers Metric (ISOIR286); when intended for location, tolerance can be 0.0 + 0.001 in. or H8 Metric (ISOIR286). option. z C v) -I D z U D z ANSI/ASME
31、B5.1 M-1985 AN AMERICAN NATIONAL STANDARD T-SLOTS, THEIR BOLTS, NUTS, AND TONGUES 4 TABLE 2 DIMENSIONS OF T-BOLTS Nominal T-Bolt Size and Thread z C A2 Bolt Head Dimensions -4 v) Rounding of Corners Note (211 I I1 11 I II II j 4 i 5s ;I !I I! 8 5; I1 II II I1 II : I1 ZW Dm I- v) -4 D z 0 11 +L3-CI L
32、L3i TABLE 3 DIMENSIONS OF T-NUTS z 0 Nominal T- Total Bolt Size Tap for Stud E3 Thickness, Note (111 Width of Tongue A3 Note (211 Width of Nut B3 Height of Nut C, Including Length of - Rounding of Corners Tongue K3 Nut L, Note R3 in. mm in. mm In. mm in. mm Note (311 (311 w3 in,. mm in. mm in. mm ma
33、x. min. rnax. min. UNC-3B IS0 max. min. , rnax. min. rnax. min. max. min. in. mm . in. mm max. max. max. max. . 4 . . . 5 . . 0.250 6 . 0.312 8 0.3300.320 8.7 8.5 0.250-20 M6 0.562 0.531 15 14 0.188 0.172 6 0.375 10 0.418 0.408 11 10.75 0.312-18 M8 0.688 0.656 18 17 0.250 0.234 7 0.500 12 0.543 0.53
34、3 13.5 13.25 0.375-16 M10 0.875 0.844 . 22 21 0.312 0.297 8 0.625 16 0.668 0.658 17.25 17 0.500-13 M12 1.125 1.094 28 27 0.406 0.391 10 0.750 20 0.783 0.773 20.5 20.25 0.625-1 1 M16 1.312 1.281 34 33 0.531 0.500 14 1.000 24 1.033 1.018 26.5 26 0.750-10 M20 1.688 1.656 43 42 0.688 0.656 18 1.250 30 1
35、.273 1.258 33 32.5 1.000- 8 M24 2.062 2.031 53 52 0.938 0.906 23 1.500 36 1.523 1.508 39.25 38.75 1.250- 7 M30 2.500 2.469 64 63- 1.188 1.156 28 5.6 6.281 9 0.562 6.6 0.375 10.5 0.688 7.6 0.531 12 0.875 9.6 0.625 15 1.125 13.2 0.781 21 1.312 17.2 1.000 27 1.688 22.2 1.312 34 2.062 27.2 1.625 42 2.50
36、0 . 18 0.02 0.5 20 0.02 0.5 23 0.02 0.5 27 0.03 0.8 35 0.03 0.8 46 0.03 0.8 53 0.03 0.8 65 0.03 0.8 . 0.03 0.03 0.06 0.06 0.06 0.06 0.06 0.06 . . 42 46.75 46.25 . 75 74 32 30.5 . 48 . 75 . 1 48 52.5 51.75 85 84 . 36 34.5 . 54 . 85 . 1 M36 . . 42 NOTES: (1) T-slot dimensions to fit the above nuts wil
37、l be found in Table 1. (2) Tolerances for threads are in accordance with ANSI/ASME 81.1 and IS0 263-1 973 for inch threads, and ANSI/ASME B1.16M (3) There are no tolerances given for “total thickness“ or “nut length“ as they need not be held to close limits. (4) Metric tapped thread grade and tolera
38、nce position is 5H. and IS0 965-1 973 for metric threads. . 0.8 0.8 1.5 $ 1.5 1.5 5 v) 1.5 2 1.5 II! 1.5 2: 22 v) C -I v) D 0 2 -4 0 z t) v) 6 -I v) 6 z* C -I cn TABLE 4 DIMENSIONS OF TONGUE SEATS, INSERTED TONGUES, AND SOLID TONGUES Socket Head Cap Screw Diameter of Screw Tongue Dimensions and Thre
39、ad E, Nominal T-Bolt Width A, Note Length L, Projection 0, Depth of Seat Metric Diameter of Thickness of Size A2 (111 Note (211 Note (311 Thickness K4 S, Note (311 Customary IS0 Head H4 Head G4 in. mm in. mm in. mrn in. mm in. mm in. rnm 3A13B (41 in. mm in. mm UNC- . Note . 4 5 . 5 6 . 7 8 . 2 2 .
40、4.5 . 2.5 3.8 . 2 M2 5 M2.5 . 4.5 . 2.5 . . . . . . . . 3 . 4 0.250 6 0.282 8 0.38 10 0.094 2.5 0.219 6 0.125 3.5 NO. 5-40 M3 0.20.5 5.5 0.125 3 0.312 8 0.344 10 0.47 12 0.125 3 0.281 7 0.156 4 NO. 8-32 M4 0.270 7 0.164 4 0.375 10 0.438 12 0.56 15 0.125 3 0.312 8 0.187 5 NO. 10-24 M5 0.312 8.5 0.190
41、 5 0.500 12 0.625 16 0.750 20 0.562 14 0.688 18 0.812 22 0.75 0.94 1 :12 19 24 30 0.125 3 0.125 3 0.1 56 4 0.344 9 0.375 10 0.438 12 0.219 6 0.250 7 0.281 8 0.250-20 M6 0.250-20 M6 0.31 2-1 8 M8 0.375 10 0.375 10 0.469 13 0.250 6 0.250 6 0.312 8 1.000 24 1.250 30 1.500 36 1.062 28 1.312 36 1.562 42
42、1.50 1.88 2.25 37 46 57 0.219 5 0.250 6 0.312 8 0.562 14 0.625 16 0.750 19 0.343 9 0.375 10 0.438 11 0.375-16 M10 0.375-16 M10 0.500-13 M12 0.562 16 0.562 16 0.750 18 0.375 10 0.375 10 0.500 12 9 z . M14 M16 . 42 48 . . 48 54 . . 64 72 . 10 12 . . 22 25 . . 12 . 13 . . 21 24 . . 14 16 . . NOTES: (1)
43、 A tolerance of 0-0.001 in. or H8 metric (ISOIR 286) is allowed on “width of tongue“ A,. (2) The length of tongue can be varied to suit requirements. (3) The “tongue projection“ D4 and “depth of seat“ S, are vital only when reversible tongues are expected to be used. In some cases, a greater projection D, or a shallower seat S4 may be desirable. Such changes can be made without interferring with interchangeability. (4) Metric thread fit is 5H/4g 6g. Intentionally left blank Intentionally left blank
