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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Small Hexagon Nuts

GB 51 - 1976

Display drawing:

国标GB 51 - 1976 GB51 51GB Small Hexagon Nuts
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Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
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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.
Thread Size
d
M8 M10 M12 (M14) M16 (M18) M20 (M22) M24 (M27) M30 M36 M42 M48
P Pitch
s max
min
m Nominal Size
max
min
e
per 1000 units ≈ kg
1.25 1.5 1.75 2 2 2.5 2.5 2.5 3 3 3.5 4 4.5 5
12 14 17 19 22 24 27 30 32 36 41 50 55 65
11.76 13.76 16.76 18.72 21.72 23.72 26.72 29.72 31.66 35.66 40.66 49.66 54.6 64.6
6 8 10 11 13 14 16 18 19 22 24 28 32 38
6.24 8.29 10.29 11.35 13.35 14.35 16.35 18.35 19.42 22.42 24.42 28.42 32.5 38.5
5.76 7.71 9.71 10.65 12.65 13.65 15.65 17.65 18.58 21.58 23.58 27.58 31.5 37.5
13.8 16.2 19.6 21.9 25.4 27.7 31.2 34.6 36.9 41.6 47.3 57.7 63.5 75
3.667 6.175 11.67 15.88 25.62 30.08 43.92 61.45 72.22 104.7 154.8 274.1 344.3 603.8
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36 Hexagon High Nuts, Style 2 - Product Grades A and B [ISO]
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46 Metric Precision Hexagon Nuts [BS]
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49 Hexgon Nuts, Style 2 - Product Grade A and B [GB]
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50 Small Hexagon Nuts - Finished [Table 2-1] [JIS]
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51 Precision Hexagon Nuts - B.S.W. & B.S.F. Threads [BS]
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52 Hexagon Nuts - Regular [Table 1-3] [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Regular [Table 1-3]
53 Small Hexagon Nuts - Semi-finished [Table 2-2] [JIS]
JIS B 1181 - 1993 		Small Hexagon Nuts - Semi-finished [Table 2-2]
54 Hexagon Nuts, Type 1 - Product Grades A and B [GB]
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55 Thick Hexagon Nuts (Special Purpose) - ISO Metric Coarse and Fine Thread - Finish A [UNI]
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56 Hexagon Nut, Style 1, Coarse, [Table 3-4] [JIS]
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57 Unified Hexagon Thick Ordinary Nuts [BS]
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58 Hexagon Nuts, Type 1 [GB]
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59 Small Hexagon Nuts, Finished, [Table JA.15] [JIS]
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60 Hexagon Nuts - Product Grade C [GB]
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61 Hexagon Nuts, Finished, [Table JA.9] [JIS]
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62 Hexagon Nuts [GB]
GB 52 - 1976 		Hexagon Nuts
63 Unified Hexagon Ordinary Nuts [BS]
BS 1768 - 1963 		Unified Hexagon Ordinary Nuts
64 Unified Hexagon Lock Nuts - Heavy Series [BS]
BS 1769 - 1951 		Unified Hexagon Lock Nuts - Heavy Series
65 Hexagon Nuts, Style 2, with Metric Fine Pitch Thread - Product Grades A and B [NF]
NF E 25-452 - 2001 		Hexagon Nuts, Style 2, with Metric Fine Pitch Thread - Product Grades A and B
66 Hexagon Nuts, Style 2 - Product Grades A and B [NF]
NF E 25-407 - 2001 		Hexagon Nuts, Style 2 - Product Grades A and B
67 Hexagon Nuts - Type C [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Type C
68 Hexagon Nuts, Style 1 [GB]
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69 Hexagon Nuts [NF]
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70 Metric Hexagon Nuts [BS]
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71 Hexagon Nuts - Semi-Finished [Table 1-2] [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Semi-Finished [Table 1-2]
72 Hexagon Nuts, Style 1 [Table 1] [JIS]
JIS B 1181 - 2004 		Hexagon Nuts, Style 1 [Table 1]
73 Hexagon Nut, Style 2, Fine Thread, [Table 14-15] [JIS]
JIS B 1181 - 2014 		Hexagon Nut, Style 2, Fine Thread, [Table 14-15]
74 Hexagon Nuts [GB]
GB /T 17116.3 - 2018 		Hexagon Nuts
75 Hexagon Foundation Nuts [JIS]
JIS B 1220 - 2010 		Hexagon Foundation Nuts
76 Unified Hexagon Ordinary Nuts - Heavy Series - Double Chamfered [BS]
BS 1769 - 1951 		Unified Hexagon Ordinary Nuts - Heavy Series - Double Chamfered
77 Hexagon Nuts, Product Grade C, [Table 5] [JIS]
JIS B 1181 - 2004 		Hexagon Nuts, Product Grade C, [Table 5]
78 Machine Screw Nuts with B.S.W. & B.S.F. Threads - Precision Type [Table 10] [BS]
BS 450 - 1958 		Machine Screw Nuts with B.S.W. & B.S.F. Threads - Precision Type [Table 10]
79 Type 2, Grade B, Hexagon Nuts [JIS]
JIS B 1181 - 1993 		Type 2, Grade B, Hexagon Nuts
80 Hexagon Nuts, Style 2 [Table 3] [JIS]
JIS B 1181 - 2004 		Hexagon Nuts, Style 2 [Table 3]
81 Hexagon Nuts, Regular, [Table JA.13] [JIS]
JIS B 1181 - 2014 		Hexagon Nuts, Regular, [Table JA.13]
82 Hexagon Nut, Style 1, Fine Thread, [Table 7-8] [JIS]
JIS B 1181 - 2014 		Hexagon Nut, Style 1, Fine Thread, [Table 7-8]
83 Type 1, Grade A, Hexagon Nuts [JIS]
JIS B 1181 - 1993 		Type 1, Grade A, Hexagon Nuts
84 Small Hexagon Nuts, Semi-finished, [Table JA.17] [JIS]
JIS B 1181 - 2014 		Small Hexagon Nuts, Semi-finished, [Table JA.17]
85 Hexagon Nuts, Semi-finished, [Table JA.11] [JIS]
JIS B 1181 - 2014 		Hexagon Nuts, Semi-finished, [Table JA.11]
86 Black Hexagon Nuts [BS]
BS 325 - 1947 		Black Hexagon Nuts
87 ISO Metric Hexagon Nuts - Black [Table 7] [BS]
BS 4190 - 2014 		ISO Metric Hexagon Nuts - Black [Table 7]
88 Hexagon Nuts - Style 1 [UNI]
UNI 5588 - 1965 		Hexagon Nuts - Style 1
89 Spectacle Frames - Hexagon Nuts [JIS]
JIS B 1119 (3H) - 1986 		Spectacle Frames - Hexagon Nuts
90 ISO Metric Hexagon Nuts - Black [Table 12] [BS]
BS 4190 - 2001 		ISO Metric Hexagon Nuts - Black [Table 12]
91 Type 2, Grade A, Hexagon Nuts [JIS]
JIS B 1181 - 1993 		Type 2, Grade A, Hexagon Nuts
92 Unified Hexagon Ordinary Nuts - Heavy Series - Full Bearing [BS]
BS 1769 - 1951 		Unified Hexagon Ordinary Nuts - Heavy Series - Full Bearing
93 Hexagon Nuts, Style 1 - Product Grades A and B [NF]
NF E 25-401 - 2001 		Hexagon Nuts, Style 1 - Product Grades A and B
94 Hexagon Foundation Nuts [JIS]
JIS B 1220 - 2015 		Hexagon Foundation Nuts
95 Hexagon Nuts - Finished [Table 1-1] [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Finished [Table 1-1]
96 Type 1, Grade B, Hexagon Nuts [JIS]
JIS B 1181 - 1993 		Type 1, Grade B, Hexagon Nuts
97 ISO Metric Hexagon Nuts, Style 1 - Product Grades A and B [AS]
AS 1112.1 - 2000 		ISO Metric Hexagon Nuts, Style 1 - Product Grades A and B
98 Heavy Hex Flat and Hex Flat Jam Nuts [SAE]
SAE J 104 - 1969 		Heavy Hex Flat and Hex Flat Jam Nuts
99 Hexagon Nuts [SAE]
SAE J 104 - 1969 		Hexagon Nuts
100 Hex Machine Screw Nuts [SAE]
SAE J 104 - 1969 		Hex Machine Screw Nuts