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Click Specification

Unit:inch

Hex Lag Screws [Table 15] (ASTM A307 / F593 / F468 / A394)

ASME B 18.2.1 (T15) - 2012

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美标ASME B18.2.1 (T15) - 2012 ASME18.2.1 1 Hex Lag Screws [Table 15] (ASTM A307 / F593 / F468 / A394)
Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
×

Choose materials based on density.(g/cm3)

  • Carbon Steel 7.85
  • Stainless Steel 8.1
  • Stainless Steel 7.95
  • Stainless Steel 7.7
  • Titanium Alloy 4.5
  • Aluminum Alloy 2.8
  • Copper 8.89


Select here or enter material density on the calculation page.
Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.
For Nominal Thread Diameter
10# 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4
PP threads per inch
ds max
min
s max
min
e max
min
k max
min
L0 min
r max
min
11 10 9 7 - 6 5 4.5 4 3.5 3.25 3.25
0.199 0.26 0.324 0.388 0.452 0.515 0.642 0.768 0.895 1.022 1.149 1.277
0.178 0.237 0.298 0.36 0.421 0.482 0.605 0.729 0.852 0.976 1.098 1.223
0.281 0.438 0.5 0.562 0.625 0.75 0.938 1.125 1.312 1.5 1.688 1.875
0.271 0.425 0.484 0.544 0.603 0.725 0.906 1.088 1.269 1.45 1.631 1.812
0.323 0.505 0.577 0.65 0.722 0.866 1.083 1.299 1.516 1.732 1.949 2.165
0.309 0.484 0.552 0.62 0.687 0.826 1.033 1.24 1.447 1.653 1.859 2.066
0.14 0.188 0.235 0.268 0.316 0.364 0.444 0.524 0.604 0.7 0.78 0.876
0.11 0.15 0.195 0.226 0.272 0.302 0.378 0.455 0.531 0.591 0.658 0.749
0.094 0.094 0.125 0.125 0.156 0.156 0.312 0.375 0.375 0.625 0.625 0.625
0.03 0.03 0.03 0.03 0.03 0.03 0.06 0.06 0.06 0.09 0.09 0.09
0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.03
Weight of per 1000 steel products(≈kg) Reference
- - - - - - - - - - - -
Length of Thread b Reference
- - - - - - - - - - - -
①,Head Taper：Maximum width across flats and across corners shall not be exceeded. No transverse section through the head between 25% and 75% of actual head height, as measured from the bearing surface, shall be less than the minimum width across flats and across corners.
②,Bearing Surface: A die seam across the bearing surface is permissible. Bearing surface shall be perpendicular to the axis of the body within a tolerance of 3 deg for 1-in. size and smaller, and 2 deg for sizes larger than 1 in. Angularity measurement shall be taken at a location to avoid interference from a die seam. When specified by the purchaser, the die seam shall be removed. Upon completion of the machining, all dimensions and geometric requirements specified for the bearing surface and head shall be met.
③,Body Diameter: Any swell or fin under the head or any die seam on the body shall not exceed the basic bolt diameter by more than the following: (a) 0.030 in. for sizes up through ½ in. (b) 0.050 in. for sizes over ½ in. through ¾ in. (c) 0.060 in. for sizes over ¾ in. through 1 ¼ in.
④,Reduced Diameter Body: Screws may be obtained in reduced diameter body. Where reduced diameter body is specified, the body diameter shall be reduced to the blank diameter before threading, and a shoulder of full body diameter under the head shall be provided.
⑤,Thread Length: The minimum thread length shall be equal to onehalf of the nominal screw length +0.50 in., or 6 in., whichever is shorter. Screws too short for the formula thread length shall be threaded as close to the head or shoulder as practicable.
⑥,Material: A material standard shall be a part of every lag screws designation and only the chemical requirements of the designated material standard shall be met. Unless otherwise specified, the material standards shall be as follows: (a) carbon steel: ASTM A307, Grade A (b) stainless steel: ASTM F593, Group 1, Condition CW (304) (c) nonferrous materials: ASTM F468.

Alternative history

ASME B 18.2.1T9 - 1996 ASME B 18.2.1T15 - 2010 ASME B 18.2.1T15 - 2012
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