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Unit:inch

Hexagon Socket Flat Countersunk Head Cap

ASME B 18.3 (Table 8-III) - 2012

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美标ASME B18.3 (Table 8-III) - 2012 ASME18 Hexagon Socket Flat Countersunk Head Cap
Download CAD Model*

 *Models with different eras.

Nominal Diameter
d
2# 4# 5# 6# 8# 10# 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1
d Nominal Diameter
PP UNC
UNF
UNEF
ds max
min
dk max
min
k Ref
A Ref.
t min
b min
α ±2°
Socket No.
0.086 0.112 0.125 0.138 0.164 0.19 0.25 0.3125 0.375 0.4375 0.5 0.625 0.75 0.875 1
56 40 40 32 32 24 20 18 16 14 13 11 10 9 8
64 48 44 40 36 32 28 24 24 20 20 18 16 14 12
- - - - - - 32 32 32 28 28 24 20 20 20
0.086 0.112 0.125 0.138 0.164 0.19 0.25 0.3125 0.375 0.4375 0.5 0.625 0.75 0.875 1
0.0822 0.1075 0.1202 0.1329 0.1585 0.184 0.2435 0.3053 0.3678 0.4294 0.4919 0.6163 0.7406 0.8647 0.9886
0.197 0.255 0.281 0.307 0.359 0.411 0.531 0.656 0.781 0.844 0.938 1.188 1.438 1.688 1.938
0.168 0.218 0.24 0.263 0.311 0.359 0.48 0.6 0.72 0.781 0.872 1.112 1.355 1.604 1.841
0.064 0.083 0.09 0.097 0.112 0.127 0.161 0.198 0.234 0.234 0.251 0.324 0.396 0.468 0.54
0.094 0.111 0.111 0.132 0.155 0.178 0.221 0.266 0.312 0.352 0.352 0.446 0.529 0.619 0.795
0.03 0.035 0.04 0.04 0.045 0.05 0.065 0.087 0.105 0.100 0.119 0.135 0.205 0.265 0.285
0.62 0.75 0.75 0.75 0.88 0.88 1 1.12 1.25 1.38 1.5 1.75 2 2.25 2.5
82° 82° 82° 82° 82° 82° 82° 82° 82° 82° 82° 82° 82° 82° 82°
T8 T10 T10 T15 T20 T25 T30 T40 T45 T50 T50 T55 T60 T70 T90
①,Material
a、Alloy steel shall conform in all respects to ASTM F835
b、Corrosion-resistant steel shall conform in all respects to ASTM F879

Alternative history

ASME B 18.3 - 2012 ASTM 18.3Table 8-III - 2012

Suppliers

Best price if from GlobalFastener.com.
Shanghai ATM Precision Fastening Technology Co., Ltd.

  • Xu Hai

  • +86-18621311857

  • +86-21-59766477

  • Materials: 301, 302, 303, 304, 304L, 316, 316L, 316Ti, 317L, 310S, 321, 347, 1.4529, 1.4539, 1.4462, 1.4547, 1.4980, 904L, 2205, 2507, 2520, S32750, S32760, 1Cr13, 1Cr17, 2Cr13, 3Cr13, 14Cr17Ni2, 410, 416, 420, 430, 431, 440, 630, 631, 17-4PH, MP35N, 600, 601, 625, 660, 718, 750, 800, 825, 925, 926, C22, C276, A286, GH2132, GH4033, GH4080, GH4169, GH4145, 9C18Mo, 4Cr10Si2Mo, 35CrMoA, 42CrMoA, 40CrNiMoA, 25Cr2Mo1VA, SCM435, SCM440, 4130, 4140, 4145, A36, A307, A320, A325, A490, A574, F1554; stainless steel, alloy steel, titanium alloys, nickel-based alloys, high-temperature alloys, corrosion-resistant alloys, nickel-cobalt alloys, special alloys, and other special materials per customer specifications. Grades: A1-50, A2-50, A2-70, A2-80, A3-70, A4-70, A4-80, A4-90, A4-100, A5-80, B8, B8M, B8C, B8T, B6, B7, B7M, B16, C1-50, C1-70, C1-110, C3-80, C3-120, C4-70, D2-80, D2-100, D4-80, D4-100, D6-80, D6-100, D8-80, D8-100, P1-90, P1-120, F51, F53, F55, F60, 10.9, 12.9, 14.9, 15.9, 16.9; Other grades available upon request. Specifications: M3–M120, 1/4"–4". No limitation on product diameter or length; custom non-standard parts can be manufactured upon request. Surface Treatments: passivation, black oxide, phosphating, electrophoretic coating, zinc plating, nickel plating, chrome plating, cadmium plating, gold plating, silver plating, tin plating, copper plating, zinc diffusion, marine zinc, aluminum diffusion, aluminum spraying, Dacromet, Geomet, Teflon coating, zinc-nickel alloy plating, nickel-cobalt alloy plating, hot-dip galvanizing, ceramic composite coatings, molybdenum disulfide coating, tungsten disulfide coating, nano-coatings, and other surface finishes per customer requirements.
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