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ASME B18.2.1 Titanium Square Head Bolts

1. Material & Standard of Titanium Square Head Bolt

  • Material: titanium Grade 1, 2, 3, 5, 7, 9, 12, 16.
  • Standards: ASTM B381, ASTM F468, ASME B18.2.1
  • Thread: cut thread or rolled thread; ASME B1.1

2. Technical Drawing of Titanium Square Head Bolt

Drawing of square head bolt, cut head

Drawing of square head bolt, cut thread, acc. to ASME B18.2.1.

Drawing of square head bolt, rolled head

Drawing of square head bolt with rolled thread, acc. to ASME B18,2.1

square head top view

Top view of the square head bolt.

3. Dimensions & Weights of Titanium Square Head Bolt

NominalEFG
Sizemax.min.basicmax.min.max.min.
1/4"0.2600.2373/80.3750.3620.5300.498
5/16"0.3240.2981/20.5000.4840.7070.665
3/8"0.3880.3609/160.5620.5440.7950.747
7/16"0.4520.4215/80.6250.6030.8840.828
1/2"0.5150.4823/40.7500.7251.0610.995
5/8"0.6420.60515/160.9380.9061.3261.244
3/4"0.7680.7291-1/81.1251.0881.5911.494
7/8"0.8950.8521-5/161.3121.2691.8561.742
1"1.0220.9761-1/21.5001.4502.1211.991
1-1/8"1.1491.0981-11/161.6881.6312.3862.239
1-1/4"1.2771.2231-7/81.8751.8122.6522.489
1-3/8"1.4041.3452-1/162.0621.9942.9172.738
1-1/2"1.5311.4702-1/42.2502.1753.1822.986
*Unit: inch; E: full-size body diameter; F: width across flats; G: width across corners.

NominalHRLT
Sizebasicmax.min.max.min.≤ 6"> 6"
1/4"11/640.1880.1560.030.010.7501.000
5/16"13/640.2200.1860.030.010.8751.125
3/8"1/40.2680.2320.030.011.0001.250
7/16"19/640.3160.2780.030.011.1251.375
1/2"21/640.3480.3080.030.011.2501.500
5/8"27/640.4440.4000.060.021.5001.750
3/4"1/20.5240.4760.060.021.7502.000
7/8"19/320.6200.5680.060.022.0002.250
1"21/320.6840.6280.090.032.2502.500
1-1/8"3/40.7800.7200.090.032.5002.750
1-1/4"27/320.8760.8120.090.032.7503.000
1-3/8"29/320.9400.8720.090.033.0003.250
1-1/2"11.0360.9640.090.033.2503.500
*Unit: inch; H: head height; R: radius of fillet; LT: nominal thread length for bolt lengths.

Weight calculation formula for titanium square bolt:  Wt = ( F * F * H + π * E * E / 4 * L ) * ρ * 1.64 * 10-5;  ρ = 4510 kg/m3.

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