Ribbed Shoulder Bolt

Model / MPN: 6440 | NSN: 5306-00-237-8296

An externally threaded fastener whose threaded portion is of one diameter. It has a series of longitudinal ribs, splines or serrations on all or a part of the shoulder. The minor diameter of the ribs must be greater than the major diameter of the threads. See also bolt, ribbed neck.

Product Details

NATO Stock Number

5306-00-237-8296

Sold in multiples of

50 EA

DEMIL

Thread Class

Thread Direction

Right-hand

Thread Length

Between 1.109 inches and 1.141 inches

Fastener Length

Between 1.859 inches and 1.891 inches

Head Style

Flat chamfer

Head Diameter

Between 0.812 inches and 0.874 inches

Head Height

Between 0.229 inches and 0.239 inches

Shoulder Diameter

0.534 inches first shoulder and 0.539 inches first shoulder

Shoulder Length

0.495 inches first shoulder

Thread Diameter

0.500 inches

Thready Qty Per Inch (tpi)

Hardness Rating

28.0 rockwell c and 36.0 rockwell c

Shoulder Shape

Ribbed first shoulder

Material

Steel comp 4140

Material Specification

Sae assn standard single material response

Surface Treatment

Cadmium and chromate

Thread Series Designator

Unf

6440 Series Parts

Pricing and Availability

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6440 Cross Reference

03-006440