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Hexagon pressure riveting nut BOB BOBS
Auther: Pubdate:2018-09-17
 
 
Hexagon pressure riveting nut, BOB

Hexagon pressure riveting nut, according to the material of the different models have BOB (carbon steel hexagonal pressure riveting nut) and BOBS (not steel hexagonal pressure riveting nut), should be to use 0.8 mm, 1.0 mm, 1.5 mm sheet, three different thickness specification from M3 to M8.

Said method example: BOB M3-2 ZI

(made of carbon steel screw M3 is suitable for the 2 kinds of thickness is 1.4 MM galvanized)

Unlike S class circular pressure riveting nut, BOB nut outside the hexagonal, riveting installed on the workpiece after late socket or wrench screw twist.

BOB BOBS hexagonal pressure riveting nut standard
Drawing:
BOB hexagonal pressure riveting nut

The metric sizes (MM) : 
Thread pitch X Model TYPE Threaded code Specifications and codes A The minimum Plate aperture C H T The minimum margins
Carbon steel Stainless steel Hardened stainless steel
thickness
Max + 0.08 Max + / - 0.25 + / - 0.1
M3X0.5 BOB BOBS BOB4 M3 0 0.8 0.8 4.25 4.22 5.5 2 4.8
1 1.0 1.0
2 1.35 1.4
M4X0.7 BOB BOBS BOB4 M4 0 0.8 0.8 5.4 5.38 7.0 2.2 6.9
1 1.0 1.0
2 1.35 1.4
M5X0.8 BOB BOBS BOB4 M5 0 0.8 0.8 6.4 6.38 8.0 3.0 7.1
1 1.0 1.0
2 1.35 1.4
M6X1 BOB BOBS BOB4 M6 1 1.15 1.2 8.75 8.72 10.0 4.1 8.6
2 1.4 1.5
M8X1.25 BOB BOBS BOB4 M8 1 1.15 1.2 10.5 10.47 12.7 5.0 9.7
2 1.4 1.5
M8 in standard specifications, the rest of the industry to use for the other standard (C = 9.95 H = 12) 

American size unit (inch) : 
Thread pitch X Model TYPE Threaded code Specifications and codes A The minimum Plate aperture C H T The minimum margins
Carbon steel Stainless steel Hardened stainless steel
thickness
Max 003 +. Max Plus or minus.01 005 + / -.
The 138-32
(# 6-32)
BOB BOBS BOB4 632 1 038. 040. 213. 212. 216. The 09 27.
2 054. 056.
The 164-32
(# 8-32)
BOB BOBS BOB4 832 0 038. 040. 234. 233. 275. The 09 28.
1 054. 056.
190-24
(# 10-24)
BOB BOBS BOB4 024 0 038. 040. 296. 295. 315. 12. 31.
1 054. 056.
The 190-32
(# 10-32)
BOB BOBS BOB4 032 0 038. 040. 296. 295. 315. 12. 31.
1 054. 056.
The 250-20
(20) a quarter -
BOB BOBS BOB4 0420 1 054. 056. 344. 343. 394. 17. 34.
2 087. 091.
The material
The product type The material of use Heat treatment Surface plating Mounting plate hardness degrees
BOB 1215 fast cutting steel Carburizing HV380-420 The default blue white zinc Rockwell hardness is not more than 80 B
BOBS SUS303 stainless steel There is no According to the ASTMA380 passivation Rockwell hardness is not more than 70 B

The table of the specific composition of:
The material of use The element name and chemical composition (%)
Carbon (C) Manganese (Mn) Silicon (Si) Phosphorus (P) Sulfur (S) Nickel (Ni) Molybdenum (Mo) Chromium (Cr)
1215 fast cutting steel 0.09 or less 0.75 to 1.05   0.04 to 0.09 0.26 to 0.35      
SUS303 stainless steel 0.15 or less 2.00 or less 1.00 or less 0.20 or less 0.15 or less 8.00 to 10.00 Can be added to 0.60 or less 17.00 to 19.00
The installation of BOB BOBS push output and torque standards

The product type The screw thread Specifications and codes Test the installation plate material The installation force Launch force Torsion output
(kN) (N) (N•m)
BOB
BOBS
M3 0 5052 - H34 aluminum 6.7 to 8.9 280 0.9
1 400 1.13
2 750 1.47
0 Cold rolled steel 11.2 to 15.6 470 1.47
1 550 1.7
2 1010 2.03
M4 0 5052 - H34 aluminum 11.2 to 13.4 300 2.37
1 470 2.6
2 970 4
0 Cold rolled steel 18 to 27 490 2.95
1 645 4
2 1250 5.1
M5 0 5052 - H34 aluminum 11.2 to 15.6 300 3
1 480 3.6
2 845 5.7
0 Cold rolled steel 18 and 38 530 3.6
1 800 4.5
2 1112 6.8
M6 1 5052 - H34 aluminum 18 to 32 750 7.9
2 970 10.2
1 Cold rolled steel 27-36 900 13
2 1380 17
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