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Unit:mm

Type 1, Grade A, Hexagon Nuts

JIS B 1181 - 1993

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日标JIS B1181 - 1993 JIS1181 1181JIS Type 1, Grade A, Hexagon Nuts
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 *Models with different eras.

Thread Size
D
M1.6 M2 M2.5 M3 M3.5 M4 M5 M6 M8 M10 M12 M14 M16
P Coarse pitch
Fine pitch-1
Fine pitch-1
c max
min
da max
min
dw min
e min
m max
min
m1 min
m2 min
s max=nominal size
min
0.35 0.4 0.45 0.5 0.6 0.7 0.8 1 1.25 1.5 1.75 2 2
- - - - - - - - 1 1 1.5 - 1.5
- - - - - - - - - 1.25 1.25 1.5 -
0.2 0.2 0.3 0.4 0.4 0.4 0.5 0.5 0.6 0.6 0.6 0.6 0.8
0.1 0.1 0.1 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.2
1.84 2.3 2.9 3.45 4 4.6 5.75 6.75 8.75 10.8 13 15.1 17.3
1.6 2 2.5 3 3.5 4 5 6 8 10 12 14 16
2.27 3.07 4.07 4.57 5.07 5.88 6.88 8.88 11.63 14.63 16.63 19.64 22.49
3.41 4.32 5.45 6.01 6.58 7.66 8.79 11.05 14.38 17.77 20.03 23.36 26.75
1.3 1.6 2 2.4 2.8 3.2 4.7 5.2 6.8 8.4 10.8 12.8 14.8
1.05 1.35 1.75 2.15 2.55 2.9 4.4 4.9 6.44 8.04 10.37 12.1 14.1
0.84 1.08 1.4 1.72 2.04 2.32 3.52 3.92 5.15 6.43 8.3 9.68 11.28
0.74 0.95 1.23 1.51 1.79 2.03 3.06 3.43 4.51 5.63 7.26 8.47 9.87
3.2 4 5 5.5 6 7 8 10 13 16 18 21 24
3.02 3.82 4.82 5.32 5.82 6.78 7.78 9.78 12.73 15.73 17.73 20.67 23.67

Alternative history

JIS B 1181 - 1993 JIS B 1181 - 2004 JIS B 1181 - 2014

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

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  • 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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