Machinery's Handbook, 31st Edition
1684
Bolts American National Standard Round Head Short Square Neck Bolts ANSI/ASME B18.5-2012 (R2017)
H
P
R
Q
O
E
15° Max
A
L
Cor. Rad. on Sq., Q
Body Dia., E
Head Dia., A
Head Height, H
Square Width, O
Square Depth, P
Fillet Rad., R Max.
Nomi nal Size
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
1 ∕ 4 0.260 0.213 0.594 0.563 0.145 0.125 0.260 0.245 0.124 0.093 0.031 0.031 5 ∕ 16 0.324 0.272 0.719 0.688 0.176 0.156 0.324 0.307 0.124 0.093 0.031 0.031 3 ∕ 8 0.388 0.329 0.844 0.782 0.208 0.188 0.388 0.368 0.156 0.125 0.047 0.031 7 ∕ 16 0.452 0.385 0.969 0.907 0.239 0.219 0.452 0.431 0.156 0.125 0.047 0.031 1 ∕ 2 0.515 0.444 1.094 1.032 0.270 0.250 0.515 0.492 0.156 0.125 0.047 0.031 5 ∕ 8 0.642 0.559 1.344 1.219 0.344 0.313 0.642 0.616 0.218 0.187 0.078 0.062 3 ∕ 4 0.768 0.678 1.594 1.469 0.406 0.375 0.768 0.741 0.218 0.187 0.078 0.062 All dimensions are given in inches. Threads are Unified Standard, Class 2A, UNC Series, in accordance with ANSI/ASME B1.1. For threads with additive finish, the maximum diameters of Class 2A apply before plating or coating, whereas the basic diameters (Class 2A maximum diameters plus the allowance) apply to a bolt after plating or coating. Bolts are designated in the sequence shown: nominal size (number, fraction or decimal equiva lent); threads per inch; nominal length (fraction or decimal equivalent); product name; material; and protective finish, if required. For example, 1 ∕ 2 -13 × 3 Round Head Short Square Neck Bolt, Steel .375-16 × 2.50 Round Head Short Square Neck Bolt, Steel, Zinc Plated American National Standard Round Head Fin Neck Bolts ANSI/ASME B18.5-2012 (R2017) H E P M O R* L A Nomi nal Size Body Dia., E Head Dia., A Head Height, H Fin Thick., M Dist.Across Fins, O Fin Depth, P Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. No. 10 0.199 0.182 0.469 0.438 0.114 0.094 0.098 0.078 0.395 0.375 0.088 0.078 1 ∕ 4 0.260 0.237 0.594 0.563 0.145 0.125 0.114 0.094 0.458 0.438 0.104 0.094 5 ∕ 16 0.324 0.298 0.719 0.688 0.176 0.156 0.145 0.125 0.551 0.531 0.135 0.125 3 ∕ 8 0.388 0.360 0.844 0.782 0.208 0.188 0.161 0.141 0.645 0.625 0.151 0.141 7 ∕ 16 0.452 0.421 0.969 0.907 0.239 0.219 0.192 0.172 0.739 0.719 0.182 0.172 1 ∕ 2 0.515 0.483 1.094 1.032 0.270 0.250 0.208 0.188 0.833 0.813 0.198 0.188 All dimensions are given in inches unless otherwise specified. *Maximum fillet radius R is 0.031 inch for all sizes. For information as to threads and method of bolt designation, see footnotes to the preceding table.
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online