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Sales Systems Limited Products and Services > Fasteners > Bolts / Screws > Round Head Bolts > Round Head Ribbed Neck Bolts > Item # RHRNB02500XXX  
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Item # RHRNB02500XXX, Round Head Ribbed Neck Bolt, with 0.260" 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.

1/4 in

Nominal Size or Basic Bolt Dia. (Decimal)

0.2500 in

Max. Body Dia. (E)

0.260 in

Min. Body Dia. (E)

0.237 in

Max. Head Dia. (A)

0.594 in

Min. Head Dia. (A)

0.563 in

Max. Head Height (H)

0.145 in

Min. Head Height (H)

0.125 in

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

0.031 in

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

0.063 in

Approx. Number of Ribs (N)

10

Min. Dia. Over Ribs (O)

0.274 in

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

0.250 in

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

0.407 in

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

0.594 in

Max. Fillet Radius (R)

0.031 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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