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(Non-preferred) dimensions in parentheses.

Unit:inch

Plain and Slotted Hexagon Head Screws [Table 16]

BS 1981 - 1991

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英标BS 1981 - 1991 BS1981 1981BS Plain and Slotted Hexagon Head Screws [Table 16]
Part No.
4# 5# 6# 8# 10# (12#)
d
PP Thread quantity per inch
s max
min
e min
k max
min
df max
min
n max
min
t max
min
r min
max
0.112 0.125 0.138 0.164 0.19 0.216
40 40 32 32 24 24
0.187 0.187 0.25 0.25 0.312 0.312
0.181 0.181 0.244 0.244 0.305 0.305
0.202 0.202 0.272 0.272 0.34 0.34
0.06 0.07 0.093 0.11 0.12 0.155
0.049 0.058 0.08 0.096 0.105 0.139
0.171 0.171 0.234 0.234 0.295 0.295
0.161 0.161 0.224 0.224 0.285 0.285
0.039 0.043 0.048 0.054 0.06 0.067
0.031 0.035 0.039 0.045 0.05 0.056
0.036 0.042 0.046 0.066 0.072 0.093
0.025 0.03 0.033 0.052 0.057 0.077
0.004 0.004 0.004 0.008 0.008 0.008
0.016 0.019 0.021 0.024 0.028 0.032
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Similar Standards

1 Cross recessed hexagon bolts with indentation [GB]
GB /T 29.2 - 1988 		Cross recessed hexagon bolts with indentation

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2 Plain (Unslotted) and Slotted Regular and Large Hex Head Screws [Table 29] (ASTM F837, F468) [ASME]
ASME B 18.6.3 (T29) - 2013 		Plain (Unslotted) and Slotted Regular and Large Hex Head Screws [Table 29] (ASTM F837, F468)
3 Slotted hexagon bolts [GB]
GB 29 - 1976 		Slotted hexagon bolts
4 Hexagon Bolts With Slot On Head - Product A and B [GB]
GB /T 29.1 - 1988 		Hexagon Bolts With Slot On Head - Product A and B
5 Slotted Hexagon Head Screws For Metal, Product Grade A, Symbol HS [NF]
NF E 25-137 - 1986 		Slotted Hexagon Head Screws For Metal, Product Grade A, Symbol HS
6 Hexagon Bolts With Slot On Head [GB]
GB /T 29.1 - 2013 		Hexagon Bolts With Slot On Head
7 Slotted Hexagon Head Bolts With Reduced Body [CNS]
CNS 4702 - 1982 		Slotted Hexagon Head Bolts With Reduced Body