Table of Contents
How are nut sizes measured?
Nuts are measured by the width of the hex shape and by their thread pitch. Bolts and nuts come in many different measurements and cannot be interchanged. Most nut and bolt measurements come in either metric sizing or standard sizing.
What do the numbers on nuts mean?
The number has nothing to do with the size, but does indicate the relative strength of the bolt. The higher the number, the stronger the bolt. Some metric nuts are also marked with a single-digit number to indicate the strength, and some may have the M and strength grade embossed on the flats of the hex.
What size is a #8 nut?
US Nut Size Table Size Diameter* Height Hex Nut Nylock Nut #6 – 11/64″ #8 – 15/64″ #10 – 15/64″.
How do I read my nut specs?
Read the first letter of the size. This the largest diameter: the measurement of the screw on the thread. Read the second number. This is either the number of threads per unit of the distance between threads; also known as the “thread pitch”. Read the third number, generally the one following the “x.”.
What size is M18 bolt?
Dimensions for DIN931 Hex Head Bolt Diameter (d) Pitch Across Flats (s) M16 2mm 24mm M18 2.5mm 27mm M20 2.5mm 30mm M22 2.5mm 32mm.
Are #14 and 1/4 screws the same?
The diameter of a #14 screw is just under 1/4 inch at 0.240″, or just over 6 mm at 6.096 mm.
What grade is a bolt with 3 markings?
Three radial lines will indicate an SAE grade 5 fastener, while six radial lines will indicate an SAE grade 8 fastener.
What do 3 lines on a bolt head mean?
The markings can identify the standard to which the bolt was made. For instance, if a bolt head contains three radial lines, then it’s a Grade 5 bolt. If it contains five radial lines, then the bolt is Grade 8.
What is a #12 nut?
Machine Screw Nuts Hex Machine Screw Nut Dimensions Nom. Size Basic Diameter Width #8 0.1640 25/64 #10 0.1900 27/64 #12 0.2160 1/2.
What is m10 bolt size?
Metric Hex Bolt Dimensions NOMINAL SIZE (D) BODY DIAMETER ACROSS CORNERS m10 10.00 18.48 m12 12.00 20.78 m14 14.00 24.25 m16 16.00 27.71.
What size nut goes on a 1 1 8 bolt?
Dimensions of Heavy Hex Nuts ASME B18. 2.2 used with Stud Bolts ASME B16. 5 SIZE Width Across Flats Width Across Corners 1 1.5/8 1.796 1.1/8 1.13/16 2.002 1.1/4 2 2.209 1.3/8 2.3/16 2.416.
How do you size a hex nut?
Hex nut size refers to its nominal thread diameter. Typically, sizes range from 1/4″ to about 2 1/2″. Size is specified in inches, usually fractional rather than decimal. Table 1 lists width across flats and across corners, and thickness.
What size bolt does a 9/16 nut fit?
Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt. US Bolts Bolt Diameter (in) Head and Wrench Size (in) 1/2 3/4 7/8 9/16 13/16 5/8 15/16 1 1/16.
What size is a 10 32 nut?
10-32 screws have a diameter of 3/16″ (4.8mm) where as 12-24 screws have a diameter of 7/32″ (5.6mm).
What size are M8 nuts?
8mm Finish Natural Nut Width A/F (J) 13mm Nut Width A/P (P) 14.95mm Thread Pitch 1.25mm Thread Size M8 (8mm).
How do you tell the difference between metric and imperial nuts?
Telling the difference between a metric and imperial bolt is easy. If the bolt has lines on the head its standard or imperial. If the bolt has numbers on the head then its metric. These markings indicate how strong the bolt is they call this tensile strength.
What does M stand for in bolt sizes?
Taking a closer look at this description, let’s explore its meaning: M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters. 20 = The fastener’s length, in millimeters.
What size is M4 in inches?
Tap size Basic major dia (mm) Basic major dia (inch) M4 x 0.7 4mm .1575 M5 x 0.8 5mm .1969 M6 x 1 6mm .2362 M8 x 1.25 8mm .3150.
Is M18 an 18mm?
M18-1.5 or 18mm Metric FINE Thread Hex Nuts Steel Din 934 Yellow Zinc – (5 Pcs).
What size is M18 nut?
M18 Hexagon Nuts (DIN 934) – Marine Stainless Steel (A4) Technical Specification Finish Natural Nut Width A/F (J) 27mm Nut Width A/P (P) 31.05mm Thread Pitch 2.5mm Thread Size M18 (18mm).
What does a #14 screw mean?
#14: 0.2500 or 1/4 in. #15: 0.3120 or 5/16 in. #16: 0.3750 or 3/8 in. Numeric Size denominations larger than #16 are uncommon. Diameters are based on ASME Coarse Thread Series (UNC/UNRC) and ASME Fine Thread Series (UNF/UNRF).
What screw size is #14?
Screw Dimensions “A” Flat Head “B” Body Dia Size Max Min 14 0.507 0.190 Note: IFI Standards specify a tolerance on screw length of +0″, −1/16″. “A” Flat Head “B” Body Dia.
What diameter are no 14 screws?
American Screw Sizes THREAD DIAMETER Size Nearest Fraction Inch #10 3/16 0.19 #12 7/32 0.21 #14 1/4 0.24.
Is Grade 8 or 12.9 stronger?
A head with no markings is Grade 2, one with 3 lines spaced 120 degrees is Grade 5, and 6 lines spaced at 60 degree intervals is Grade 8.Table 1. Grade/Class Strength Metric Class 10.9 Similar to Grade 8. Metric Class 12.9 The highest metric class for strength, it exceeds Grade 8.
How do I tell the grade of a bolt?
You can usually figure out the grade, or strength, of a bolt by looking at the markings on its head. English bolts (U.S.S. or S.A.E) are categorized by grade, from grade 2 to grade 8, where the grade represents inch strength. The higher the grade, the stronger the bolt.
