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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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47 Unified Hexagon Ordinary Nuts - Heavy Series - Full Bearing [BS]
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48 Spectacle Frames - Hexagon Nuts [JIS]
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51 Hexagon Nuts, Product Grade C, [Table 5] [JIS]
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54 Hexagon Screw Nuts, Size #0 To #12 [BS]
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55 Unified Hexagon Thick Ordinary Nuts [BS]
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56 ISO Metric Hexagon Nuts - Black [Table 7] [BS]
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57 Hexagon Nuts, Type 1 - Product Grades A and B [GB]
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58 Unified Hexagon Ordinary Nuts [BS]
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59 Hexagon Nuts - Style 1 [UNI]
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60 Hexagon Nut, Style 1, Fine Thread [Table 2] [JIS]
JIS B 1181 - 2004 		Hexagon Nut, Style 1, Fine Thread [Table 2]
61 Hexagon Nut, Style 2, Coarse Thread, [Table 11] [JIS]
JIS B 1181 - 2014 		Hexagon Nut, Style 2, Coarse Thread, [Table 11]
62 Hexagon Nuts [NF]
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63 Metric Hexagon Nuts [BS]
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64 Small Hexagon Nuts, Finished, [Table JA.15] [JIS]
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65 Small Hexagon Nuts - Finished [Table 2-1] [JIS]
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66 Hexagon Nuts, Regular, [Table JA.13] [JIS]
JIS B 1181 - 2014 		Hexagon Nuts, Regular, [Table JA.13]
67 Hexagon Nuts - Finished [Table 1-1] [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Finished [Table 1-1]
68 ISO Metric Hexagon Nuts - Black [Table 12] [BS]
BS 4190 - 2001 		ISO Metric Hexagon Nuts - Black [Table 12]
69 Type 1, Grade A, Hexagon Nuts [JIS]
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70 Hexagon Nuts, Style 2 - Product Grades A and B [NF]
NF E 25-407 - 2001 		Hexagon Nuts, Style 2 - Product Grades A and B
71 Hexgon Nuts, Style 2 - Product Grade A and B [GB]
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72 Type 1, Grade B, Hexagon Nuts [JIS]
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73 Type 2, Grade B, Hexagon Nuts [JIS]
JIS B 1181 - 1993 		Type 2, Grade B, Hexagon Nuts
74 Hexagon Nuts, Style 2 [Table 3] [JIS]
JIS B 1181 - 2004 		Hexagon Nuts, Style 2 [Table 3]
75 Hexagon Nuts, Style 1 - Product Grades A and B [NF]
NF E 25-401 - 2001 		Hexagon Nuts, Style 1 - Product Grades A and B
76 Hexagon Nuts - Product Grade C [NF]
NF E 25-402 - 2001 		Hexagon Nuts - Product Grade C
77 Hexagon Nuts, Style 1 - Product Grade C [GB]
GB /T 41 - 2016 		Hexagon Nuts, Style 1 - Product Grade C
78 Hexagon Nut, Style 2, Fine Thread, [Table 14-15] [JIS]
JIS B 1181 - 2014 		Hexagon Nut, Style 2, Fine Thread, [Table 14-15]
79 Black Hexagon Nuts [BS]
BS 325 - 1947 		Black Hexagon Nuts
80 Hexagon Nuts, Style 1, with Fine Pitch Thread - Product Grades A and B [NF]
NF E 25-451 - 2001 		Hexagon Nuts, Style 1, with Fine Pitch Thread - Product Grades A and B
81 Unified Hexagon Lock Nuts - Heavy Series [BS]
BS 1769 - 1951 		Unified Hexagon Lock Nuts - Heavy Series
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 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]
84 Hexagon Nuts, Style 1 [GB]
GB /T 6170 - 2015 		Hexagon Nuts, Style 1
85 Hexagon Nuts - Regular [Table 1-3] [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Regular [Table 1-3]
86 Hexagon Nuts - Type C [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Type C
87 Hexagon Nuts, Style 1 [Table 1] [JIS]
JIS B 1181 - 2004 		Hexagon Nuts, Style 1 [Table 1]
88 Small Hexagon Nuts, Semi-finished, [Table JA.17] [JIS]
JIS B 1181 - 2014 		Small Hexagon Nuts, Semi-finished, [Table JA.17]
89 Thick Hexagon Nuts (Special Purpose) - ISO Metric Coarse and Fine Thread - Finish A [UNI]
UNI 5587 - 1968 		Thick Hexagon Nuts (Special Purpose) - ISO Metric Coarse and Fine Thread - Finish A
90 Type 2, Grade A, Hexagon Nuts [JIS]
JIS B 1181 - 1993 		Type 2, Grade A, Hexagon Nuts
91 Hexagon Nuts - Semi-Finished [Table 1-2] [JIS]
JIS B 1181 - 1993 		Hexagon Nuts - Semi-Finished [Table 1-2]
92 Hexagon Nuts [GB]
GB 52 - 1976 		Hexagon Nuts
93 Precision Hexagon Nuts - B.S.W. & B.S.F. Threads [BS]
BS 1083 - 1965 		Precision Hexagon Nuts - B.S.W. & B.S.F. Threads
94 Small Hexagon Nuts - Semi-finished [Table 2-2] [JIS]
JIS B 1181 - 1993 		Small Hexagon Nuts - Semi-finished [Table 2-2]
95 Hexagon Nuts with B.S.Threads - Black [Table 3] [BS]
BS 916 - 1953 		Hexagon Nuts with B.S.Threads - Black [Table 3]
96 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
97 Heavy Hex Flat and Hex Flat Jam Nuts [SAE]
SAE J 104 - 1969 		Heavy Hex Flat and Hex Flat Jam Nuts
98 Hexagon Nuts [SAE]
SAE J 104 - 1969 		Hexagon Nuts
99 Hex Machine Screw Nuts [SAE]
SAE J 104 - 1969 		Hex Machine Screw Nuts
100 Hex Flat and Hex Flat Jam Nuts [SAE]
SAE J 104 - 1969 		Hex Flat and Hex Flat Jam Nuts