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ASME B18.16.4 Flange Nuts
  • ASME B18.16.4 Flange NutsASME B18.16.4 Flange Nuts

ASME B18.16.4 Flange Nuts

Leader-Fastener® is a manufacturer and distributor of ASME B18.16.4 Flange Nuts. We have a complete line of service from having invested in production plants, export department and to having a quality control team and center to meet your requirements. We regard quality as the life of the company. We persist in good quality as the first policy and have established a set of quality control and inspection system according to the international standard. We have carried out ISO9001 Quality Guarantee System in every course of production, transportation and selling. We do hope we could be your partner in business by topping quality, knight service and competitive price in the near future and be your friends as well.

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Product Description

Leader-Fastener® ASME B18.16.4 Flange Nuts are available in a variety of flange diameter, width across flat, materials, shape, tolerance, thread, size, design, finishing and many other specifications. Various ASME B18.16.4 Flange Nuts used for different applications and projects. This American standard of Metric Hex Flange Nuts also used for securing access panels and any work holding application.


Product Specification of ASME B18.16.4 Flange Nuts

Material : Carbon steel, Stainless steel, Alloy Steel, Brass.

Finishment: Black, Zinc Plated, Zinc Yellow, HDG, Phosphate, DACROMET, Geomet, Magin, Ruspert, Teflon, etc.


Leader-Fastener® ASME B 18.16.4 - 2008 Regular Serrated Flange Locknuts [Table 1] (ASTM F2282)


Thread Size 6# 8# 10# 12# 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4
d 0.1380 0.1640 0.1900 0.2160 0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500
PP UNC 32 32 24 24 20 18 16 14 13 12 11 10
UNF 40 36 32 28 28 24 24 20 20 18 18 16
s max 0.312 0.344 0.375 0.438 0.438 0.500 0.562 0.688 0.750 0.875 0.938 1.125
min 0.302 0.334 0.365 0.428 0.428 0.489 0.551 0.675 0.736 0.861 0.922 1.088
e max 0.361 0.397 0.433 0.505 0.505 0.577 0.650 0.794 0.866 1.010 1.083 1.299
min 0.342 0.381 0.416 0.488 0.488 0.557 0.628 0.768 0.840 0.982 1.051 1.240
dc max 0.422 0.469 0.500 0.594 0.594 0.680 0.750 0.937 1.031 1.188 1.281 1.500
min 0.408 0.452 0.480 0.574 0.574 0.660 0.728 0.910 1.000 1.155 1.248 1.460
k max 0.171 0.203 0.219 0.236 0.236 0.283 0.347 0.395 0.458 0.506 0.569 0.675
min 0.156 0.187 0.203 0.222 0.222 0.268 0.330 0.375 0.437 0.483 0.545 0.627
h min 0.02 0.02 0.03 0.04 0.04 0.04 0.04 0.04 0.05 0.05 0.05 0.06



ASME B 18.16.4 - 2008 Large Serrated Flange Locknuts (ASTM F2282)


Nominal Diameter 1/4 5/16 3/8 7/16 1/2 9/16 5/8
d 0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250
PP UNC 20 18 16 14 13 12 11
UNF 28 24 24 20 20 18 18
s max 0.438 0.500 0.562 0.688 0.750 0.875 0.938
min 0.428 0.489 0.551 0.675 0.736 0.861 0.922
e max 0.505 0.577 0.650 0.794 0.866 1.010 1.083
min 0.488 0.557 0.628 0.768 0.840 0.982 1.051
dc max 0.728 0.820 0.915 1.131 1.205 1.300 1.360
min 0.700 0.790 0.885 1.100 1.175 1.260 1.280
k max 0.312 0.375 0.406 0.468 0.515 0.578 0.640
min 0.281 0.343 0.390 0.437 0.485 0.546 0.600
h min 0.04 0.04 0.04 0.04 0.06 0.06 0.06




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