Eccentric Head Bolt

Model / MPN: 121B | NSN: 5306-00-362-3707

An externally threaded fastener the head of which is usually flat with a periphery not concentric to the bolt shank. The head is not designed for wrenching. It may have a drive feature located at the threaded end, which can be used to rotate the screw and eccentric head into a locking position to secure a flanged or groove component.

Product Details

NATO Stock Number

5306-00-362-3707

Sold in multiples of

50 EA

DEMIL

Thread Class

Thread Direction

Right-hand

Fastener Length

2.375 inches

Head Style

Double hexagon

Head Diameter

Between 0.685 inches and 0.688 inches

Head Height

0.250 inches

Distance From Center Of Head To Center Of Shank

0.312 inches

Shank Unthreaded Hole Diameter

0.109 inches first hole

Internal Drive Style

W/o internal drive

Thread Diameter

0.437 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

135000 pounds per square inch

Hardness Rating

28.0 rockwell c and 31.0 rockwell c

Distance From Head Largest Bearing Surface To Shank Hole Center

2.266 inches first hole

Material

Steel comp 3140

Material Specification

Sae assn standard single material response

Thread Series Designator

Unf

121B Series Parts

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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121B Cross Reference

1581743
21055A
21055
1581743
21055
21055A
21055
1581743
7720E