Ribbed Shoulder Bolt

Model / MPN: 6251-13 | NSN: 5306-00-882-7811

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

5306-00-882-7811

Sold in multiples of

50 EA

DEMIL

Thread Class

Thread Direction

Right-hand

Thread Length

1.000 inches

Fastener Length

Between 2.062 inches and 2.093 inches

Head Style

Flat chamfer

Head Diameter

0.750 inches

Head Height

Between 0.230 inches and 0.240 inches

Shoulder Diameter

0.552 inches first shoulder and 0.562 inches first shoulder

Shoulder Length

0.779 inches first shoulder and 0.789 inches first shoulder

Rib Major Diameter

Between 0.552 inches and 0.562 inches

Rib Length

Between 0.779 inches and 0.789 inches

Distance From Largest Diameter Of Bearing Surface Of Head To Ribs

0.062 inches

Rib Minor Diameter

Between 0.526 inches and 0.531 inches

Rib Quantity

Thread Diameter

0.500 inches

Features Provided

Casehardened

Thready Qty Per Inch (tpi)

Shoulder Shape

Ribbed first shoulder

Material

Steel comp 1020

Material Specification

Sae assn standard single material response

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416, type 1, cl 3 federal specification single treatment response

Thread Series Designator

Unf

6251 Series Parts

Pricing and Availability

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6251-13 Cross Reference

32510
16-806