Square Neck Bolt

Model / MPN: 128421 | NSN: 5306-00-012-8421

A headed externally threaded fastener whose threaded portion is of one diameter, with a square neck directly beneath the head.

Product Details

NATO Stock Number

5306-00-012-8421

Sold in multiples of

DEMIL

Thread Class

Thread Direction

Right-hand

Thread Length

0.656 inches

Fastener Length

1.000 inches

Head Style

Oval

Head Diameter

1.000 inches

Head Height

0.156 inches

Neck Length

Between 0.156 inches and 0.187 inches

Thread Diameter

0.312 inches

Thready Qty Per Inch (tpi)

Neck Width

Between 0.307 inches and 0.324 inches

Material

Steel

Material Specification

Qq-s-633, canc federal specification single material response

Surface Treatment

Cadmium or zinc

Thread Series Designator

Unc

12842 Series Parts

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