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Sales Systems Limited Products and Services > Fasteners > Bolts / Screws > Round Head Bolts > Round Head Ribbed Neck Bolts > Item # RHRNB06250XXX  
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Item # RHRNB06250XXX, Round Head Ribbed Neck Bolt, with 0.642" Body Dia.



  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • Head to rib tolerance on the No. 10 through 1/2" sizes for nominal lengths 7/8 in. and shorter shall be +0.031 and -0.000.
  • The minimum radius is one half of the value shown.





Manufacturer  · Specifications  · Codes and Standards

Manufacturer

Manufacturer

Industrial Fasteners Institute


Specifications

Product

Round Head Bolts

Unit of Measure

English

Nominal Size or Basic Bolt Dia.

5/8 in

Nominal Size or Basic Bolt Dia. (Decimal)

0.6250 in

Max. Body Dia. (E)

0.642 in

Min. Body Dia. (E)

0.605 in

Max. Head Dia. (A)

1.344 in

Min. Head Dia. (A)

1.219 in

Max. Head Height (H)

0.344 in

Min. Head Height (H)

0.313 in

Head to Ribs for Lengths of 7/8 and Shorter (M)1

0.094 in

Head to Ribs for Lengths of 1 in. and Longer (M)2

0.094 in

Approx. Number of Ribs (N)

19

Min. Dia. Over Ribs (O)

0.660 in

Depth Over Ribs for Lengths of 7/8 and Shorter (P)3

0.313 in

Depth Over Ribs for Lengths of 1 in. and Longer (P)4

0.438 in

Depth Over Ribs for Lengths of 1-1/4 and Longer (P)5

0.625 in

Max. Fillet Radius (R)

0.062 in
1 Tolerance ±0.031
2 Tolerance ±0.031
3 Tolerance ±0.031
4 Tolerance ±0.031
5 Tolerance ±0.031


Codes and Standards

Codes and Standards

ASME B18.5 1990 (R1998)


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