{"id":463833,"date":"2024-10-20T10:30:58","date_gmt":"2024-10-20T10:30:58","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/asme-b18-6-3-2024\/"},"modified":"2024-10-26T19:23:47","modified_gmt":"2024-10-26T19:23:47","slug":"asme-b18-6-3-2024","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/asme\/asme-b18-6-3-2024\/","title":{"rendered":"ASME B18.6.3 2024"},"content":{"rendered":"

This Standard is intended to cover the complete general and dimensional data for the various types of slotted and recessed head machine screws, tapping screws, and metallic drive screws recognized as American National Standard. Also included are appendices that provide specifications and instructions for the protrusion gaging of flat countersunk head screws; across-corners gaging of hex head screws; penetration gaging and wobble gaging of recessed head screws; approximate hole size for tapping screws; wrench openings for hex and square products; thread dimensions for the No. 0000, No. 000, and No. 00 sizes; means for determining effective grip lengths on screws; documentation for screw types and head types relegated to not-recommended or limited usage status; and formulas on which dimensional data are based. It shall be understood, however, that where questions arise concerning acceptance of product, the dimensions in the tables shall govern over recalculation by formula.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
8<\/td>\nFOREWORD <\/td>\n<\/tr>\n
10<\/td>\nASME B18 COMMITTEE ROSTER <\/td>\n<\/tr>\n
11<\/td>\nCORRESPONDENCE WITH THE B18 COMMITTEE <\/td>\n<\/tr>\n
13<\/td>\nASME B18.6.3-2024 SUMMARY OF CHANGES <\/td>\n<\/tr>\n
16<\/td>\n1 INTRODUCTORY NOTES
1.1 Scope
1.2 Dimensions
1.3 Options
1.4 Responsibility for Modification
1.5 Terminology
1.6 Comparison With ISO
1.7 Referenced Standards <\/td>\n<\/tr>\n
17<\/td>\n1.8 Inspection and Quality Assurance
2 GENERAL DATA FOR MACHINE SCREW AND TAPPING SCREW HEADS
2.1 Heads <\/td>\n<\/tr>\n
18<\/td>\n2.2 Screw Head Types <\/td>\n<\/tr>\n
19<\/td>\n3 GENERAL DATA FOR MACHINE SCREWS
3.1 Machine Screw Threads
3.2 Machine Screw Length of Thread
3.3 Machine Screw Length Measurement <\/td>\n<\/tr>\n
20<\/td>\n3.4 Machine Screw Tolerance on Length
3.5 Machine Screw Diameter of Body
3.6 Machine Screw Points
3.7 Machine Screw Straightness
3.8 Machine Screw Material
3.9 Machine Screw Finish
3.10 Machine Screw Workmanship
3.11 Machine Screw Designation <\/td>\n<\/tr>\n
21<\/td>\n4 GENERAL DATA FOR TAPPING SCREWS
4.1 Tapping Screw Types and Application <\/td>\n<\/tr>\n
22<\/td>\n4.2 Threads and Points
4.3 Tapping Screw Length of Thread
4.4 Tapping Screw Diameter of Body <\/td>\n<\/tr>\n
23<\/td>\n4.5 Tapping Screw Length
4.6 Tapping Screw Tolerance on Length
4.7 Tapping Screw Straightness
4.8 Tapping Screw Materials <\/td>\n<\/tr>\n
24<\/td>\n4.9 Tapping Screw Finish
4.10 Tapping Screw Workmanship
4.11 Performance Tests <\/td>\n<\/tr>\n
25<\/td>\n4.12 Tapping Screw Designation
4.13 Tapping Screw Assembly Considerations
5 GENERAL DATA FOR METALLIC DRIVE SCREWS <\/td>\n<\/tr>\n
26<\/td>\n5.1 Drive Screw Threads
5.2 Drive Screw Length of Thread
5.3 Drive Screw Points
5.4 Drive Screw Tolerance on Length
5.5 Drive Screw Material
5.6 Test Requirements
5.7 Drive Screw Designation <\/td>\n<\/tr>\n
27<\/td>\nTables
Table 2.2.1-1 Dimensions of Slotted Flat Countersunk Head Screws <\/td>\n<\/tr>\n
30<\/td>\nTable 2.2.1-2 Recess Dimensions for Flat Countersunk Head Screws <\/td>\n<\/tr>\n
32<\/td>\nTable 2.2.1-3 Dimensions of Slotted 100-deg Flat Countersunk Head Screws (Machine Screws Only) <\/td>\n<\/tr>\n
33<\/td>\nTable 2.2.1-4 Recess Dimensions for 100-deg Flat Countersunk Head Screws (Machine Screws Only) <\/td>\n<\/tr>\n
34<\/td>\nTable 2.2.1-5 Dimensions of Slotted Close Tolerance 100-deg Flat Countersunk Head Screws (Machine Screws Only) <\/td>\n<\/tr>\n
35<\/td>\nTable 2.2.1-6 Recess Dimensions for Close Tolerance 100-deg Flat Countersunk Head Screws (Machine Screws Only) <\/td>\n<\/tr>\n
36<\/td>\nTable 2.2.2-1 Dimensions of Slotted Oval Countersunk Head Screws <\/td>\n<\/tr>\n
38<\/td>\nTable 2.2.2-2 Recess Dimensions of Oval Countersunk Head Screws <\/td>\n<\/tr>\n
40<\/td>\nTable 2.2.3-1 Dimensions of Slotted Undercut 82-deg Flat Countersunk Head Screws <\/td>\n<\/tr>\n
42<\/td>\nTable 2.2.3-2 Recess Dimensions for Undercut 82-deg Flat Countersunk Head Screws <\/td>\n<\/tr>\n
44<\/td>\nTable 2.2.3-3 Dimensions of Slotted Undercut Oval Countersunk Head Screws <\/td>\n<\/tr>\n
46<\/td>\nTable 2.2.3-4 Recess Dimensions for Undercut Oval 82-deg Countersunk Head Screws <\/td>\n<\/tr>\n
47<\/td>\nTable 2.2.4-1 Dimensions of Flat Countersunk Trim Head Screws <\/td>\n<\/tr>\n
49<\/td>\nTable 2.2.4-2 Recess Dimensions for Flat Countersunk Trim Head Screws <\/td>\n<\/tr>\n
50<\/td>\nTable 2.2.4-3 Dimensions of Oval 82-deg Countersunk Trim Head Screws <\/td>\n<\/tr>\n
53<\/td>\nTable 2.2.4-4 Recess Dimensions for Oval 82-deg Countersunk Trim Head Screws <\/td>\n<\/tr>\n
55<\/td>\nTable 2.2.5-1 Head Dimensions for Slotted Pan Head Screws <\/td>\n<\/tr>\n
57<\/td>\nTable 2.2.5-2 Dimensions of Type I Cross Recessed Pan Head Screws <\/td>\n<\/tr>\n
58<\/td>\nTable 2.2.5-3 Recess Dimensions for Pan Head Screws (Types IA, III, and VI) <\/td>\n<\/tr>\n
60<\/td>\nTable 2.2.5-4 Recess Dimensions for Combination Slotted-Pan Head Screws <\/td>\n<\/tr>\n
62<\/td>\nTable 2.2.6-1 Dimensions of Slotted Fillister Head Screws <\/td>\n<\/tr>\n
63<\/td>\nTable 2.2.6-2 Recess Dimensions for Fillister Head Screws <\/td>\n<\/tr>\n
65<\/td>\nTable 2.2.6-3 Dimensions of Slotted Drilled Fillister Head Screws (Machine Screws Only) <\/td>\n<\/tr>\n
66<\/td>\nTable 2.2.7-1 Dimensions of Slotted Truss Head Screws <\/td>\n<\/tr>\n
68<\/td>\nTable 2.2.7-2 Recess Dimensions for Truss Head Screws <\/td>\n<\/tr>\n
70<\/td>\nTable 2.2.7-3 Dimensions of Combination Slotted Truss Head Screws <\/td>\n<\/tr>\n
72<\/td>\nTable 2.2.8-1 Dimensions of Slotted Binding Head Screws (Machine Screws Only) <\/td>\n<\/tr>\n
73<\/td>\nTable 2.2.8-2 Recess Dimensions for Binding Head Screws (Machine Screws Only) <\/td>\n<\/tr>\n
74<\/td>\nTable 2.2.9-1 Dimensions of Plain (Unslotted) and Slotted Regular and Large Hex Head Screws <\/td>\n<\/tr>\n
76<\/td>\nTable 2.2.9-2 Recess Dimensions for Indented Regular and Large Hex Head Screws <\/td>\n<\/tr>\n
77<\/td>\nTable 2.2.9-3 Recess Dimensions for Type I Nonindented Regular and Large Hex Head Screws <\/td>\n<\/tr>\n
78<\/td>\nTable 2.2.10-1 Dimensions of Plain and Slotted Hex Washer Head Screws <\/td>\n<\/tr>\n
80<\/td>\nTable 2.2.10-2 Recess Dimensions for Indented Hex Washer Head Screws <\/td>\n<\/tr>\n
81<\/td>\nTable 2.2.10-3 Recess Dimensions for Combination Slotted Type I Indented Hex Washer Head Screws <\/td>\n<\/tr>\n
82<\/td>\nTable 2.2.11-1 Dimensions of Slotted Round Head Screws <\/td>\n<\/tr>\n
84<\/td>\nTable 2.2.11-2 Recess Dimensions for Round Head Screws <\/td>\n<\/tr>\n
85<\/td>\nTable 2.2.11-3 Recess Dimensions for Combination Slotted Round Head Screws <\/td>\n<\/tr>\n
87<\/td>\nTable 2.2.12-1 Dimensions of Slotted Round Washer Head Screws <\/td>\n<\/tr>\n
88<\/td>\nTable 2.2.12-2 Recess Dimensions for Round Washer Head Screws <\/td>\n<\/tr>\n
89<\/td>\nTable 4.1.1.1-1 Dimensions of Threads and Points for Types AB and ABR Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
90<\/td>\nTable 4.1.1.2-1 Dimensions of Threads and Points for Types B and BP Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
91<\/td>\nTable 4.1.1.4-1 Dimensions of Threads and Points for Type A Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
92<\/td>\nTable 4.1.2.1-1 Dimensions of Threads and Points for Types BF and BT Thread-Cutting Tapping Screws <\/td>\n<\/tr>\n
93<\/td>\nTable 4.1.2.2-1 Dimensions of Threads and Points for Types D, F, G, and T Thread-Cutting Tapping Screws <\/td>\n<\/tr>\n
95<\/td>\nTable 4.1.3-1 Dimensions of Type TRS Tapping Screws <\/td>\n<\/tr>\n
96<\/td>\nFigures
Figure 4.3.1-1 Types A, AB, B, BF, BP, and BT
Table 4.3.1-1 Thread Lengths for Types A, AB, B, BF, BP, and BT Tapping Screws <\/td>\n<\/tr>\n
97<\/td>\nFigure 4.3.2-1 Types C, D, F, G, T, and TRS
Table 4.3.2-1 Thread Lengths for Types C, D, F, G, T, and TRS Tapping Screws <\/td>\n<\/tr>\n
98<\/td>\nTable 4.11.1-1 Standard Test-Plate Thickness and Hole Sizes for Drive-Test Inspection of Tapping Screws <\/td>\n<\/tr>\n
99<\/td>\nTable 4.11.2-1 Maximum Drive Torque for Type TRS Tapping Screws <\/td>\n<\/tr>\n
100<\/td>\nFigure 4.11.3-1 Typical Torsional Strength Test Fixture
Table 4.11.3-1 Torsional Strength Requirements for Tapping Screws <\/td>\n<\/tr>\n
101<\/td>\nTable 5-1 Dimensions of Round Head Type U Metallic Drive Screws <\/td>\n<\/tr>\n
102<\/td>\nFigure I-1 Protrusion Gage
MANDATORY APPENDICES
MANDATORY APPENDIX I PROTRUSION GAGING OF FLAT COUNTERSUNK HEADS <\/td>\n<\/tr>\n
103<\/td>\nFigure II-1 Typical Gaging Fixture
MANDATORY APPENDIX II ACROSS-CORNERS GAGING OF HEX HEADS <\/td>\n<\/tr>\n
104<\/td>\nMANDATORY APPENDIX III GAGING OF RECESSED HEADS, TYPES I, IA, AND III
III-I PENETRATION GAGING
III-2 FIT GAGING ON TYPE III RECESSES <\/td>\n<\/tr>\n
105<\/td>\nFigure III-1-1 Penetration Gage for Types I, IA, and III Recesses <\/td>\n<\/tr>\n
106<\/td>\nTable III-1-1 Dimensions of Gage Heads for Types I, IA, and III Recesses <\/td>\n<\/tr>\n
107<\/td>\nTable III-1-2 Dimensions of Gage Heads for Type I Recess <\/td>\n<\/tr>\n
108<\/td>\nTable III-1-3 Dimensions of Gage Points for Type IA Recess <\/td>\n<\/tr>\n
109<\/td>\nTable III-1-4 Dimensions of Type III Square Penetration Gage Points
Table III-1-5 Dimensions of Type III Square Fit Gage Points <\/td>\n<\/tr>\n
110<\/td>\nMANDATORY APPENDIX IV WOBBLE GAGING OF RECESSED HEADS <\/td>\n<\/tr>\n
111<\/td>\nFigure IV-1 Wobble Gaging Fixture
Table IV-1 Gage Body Diameters <\/td>\n<\/tr>\n
112<\/td>\nTable IV-2 Gaging Limits for Types I, IA, and III Recesses <\/td>\n<\/tr>\n
113<\/td>\nTable V-1 Dimensions for No. 0000, No. 000, and No. 00 Thread Sizes
MANDATORY APPENDIX V DIMENSIONS FOR NO. 0000, NO. 000, AND NO. 00 THREAD SIZES <\/td>\n<\/tr>\n
114<\/td>\nMANDATORY APPENDIX VI DIMENSIONS OF TYPE C TAPPING SCREWS <\/td>\n<\/tr>\n
115<\/td>\nTable VI-1 Dimensions of Threads and Points for Type C Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
116<\/td>\nMANDATORY APPENDIX VII TYPE VI RECESS GAGE REQUIREMENTS
VII-1 SCOPE
VII-2 DEFINITION
VII-3 GAGE TYPE
VII-4 INSPECTION
VII-5 RECESS ACCEPTABILITY
VII-6 RECESS UNACCEPTABILITY <\/td>\n<\/tr>\n
117<\/td>\nTable VII-2-1 Dimensions for Type VI Recess Gage Elements <\/td>\n<\/tr>\n
119<\/td>\nTable A-1 Dimensions of Header Points for Machine Screws Before Threading
NONMANDATORY APPENDICES
NONMANDATORY APPENDIX A DIMENSIONS OF HEADER POINTS FOR MACHINE SCREWS BEFORE THREADING <\/td>\n<\/tr>\n
121<\/td>\nNONMANDATORY APPENDIX B DETERMINATION OF MAXIMUM EFFECTIVE DESIGN GRIP LENGTHS <\/td>\n<\/tr>\n
122<\/td>\nTable B-1 Constants for Determining Maximum Effective Design Grip Length on Types AB, A, and BP Tapping Screws <\/td>\n<\/tr>\n
123<\/td>\nNONMANDATORY APPENDIX C FORMULAS FOR DIMENSIONS <\/td>\n<\/tr>\n
124<\/td>\nTable C-1 Flat Countersunk Head Screws <\/td>\n<\/tr>\n
125<\/td>\nTable C-2 Undercut Flat Countersunk Head Screws <\/td>\n<\/tr>\n
126<\/td>\nTable C-3 100-deg Flat Countersunk Head Screws
Table C-4 Close Tolerance 100-deg Flat Countersunk Head Screws <\/td>\n<\/tr>\n
127<\/td>\nTable C-5 Oval Countersunk Head Screws
Table C-6 Undercut Oval Countersunk Head Screws <\/td>\n<\/tr>\n
128<\/td>\nTable C-7 Pan Head Screws
Table C-8 Truss Head Screws <\/td>\n<\/tr>\n
129<\/td>\nTable C-9 Fillister Head Screws
Table C-10 Drilled Fillister Head Screws
Table C-11 Binding Head Screws <\/td>\n<\/tr>\n
130<\/td>\nTable C-12 Round Head Screws <\/td>\n<\/tr>\n
131<\/td>\nTable C-13 Flat and Oval Countersunk Trim Head Screws <\/td>\n<\/tr>\n
133<\/td>\nTable C-14 Slot Width in Slotted Head Screws
Table C-15 Machine Screw Nuts <\/td>\n<\/tr>\n
134<\/td>\nFigure D-1 Drilled Hole
Figure D-2 Cored Hole
Figure D-3 Punched Hole
Figure D-4 Hand-Pierced Hole
NONMANDATORY APPENDIX D APPROXIMATE HOLE SIZES FOR TAPPING SCREWS <\/td>\n<\/tr>\n
135<\/td>\nFigure D-5 Type I Extruded Hole
Figure D-6 Type II Extruded Hole <\/td>\n<\/tr>\n
136<\/td>\nTable D-1 Approximate Hole Sizes for Steel Type AB Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
138<\/td>\nTable D-2 Approximate Hole Sizes for Steel Types B and BP Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
141<\/td>\nTable D-3 Approximate Hole Sizes for Steel Types BF and BT Thread-Cutting Tapping Screws <\/td>\n<\/tr>\n
143<\/td>\nTable D-4 Approximate Hole Sizes for Steel Types D, F, G, and T Thread-Cutting Tapping Screws <\/td>\n<\/tr>\n
147<\/td>\nTable D-5 Approximate Hole Sizes for Steel Type A Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
149<\/td>\nTable D-6 Approximate Hole Sizes in Steel Sheet Metals for Steel Type C Thread-Forming Tapping Screws <\/td>\n<\/tr>\n
151<\/td>\nTable D-7 Approximate Hole Sizes for Thread Rolling Screws <\/td>\n<\/tr>\n
157<\/td>\nTable E-1 Wrench Openings for Hex Head Screws, and Square and Hex Nuts
NONMANDATORY APPENDIX E WRENCH OPENINGS FOR HEX HEAD SCREWS, AND SQUARE AND HEX NUTS <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

ASME B18.6.3-2024 Machine Screws, Tapping Screws, and Metallic Drive Screws (Inch Series)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASME<\/b><\/a><\/td>\n2024<\/td>\n161<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":463837,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2643],"product_tag":[],"class_list":{"0":"post-463833","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-asme","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/463833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/463837"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=463833"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=463833"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=463833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}