Model: 2057D139

Externally Relieved Body Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.590 inches

Fastener Length

1.420 inches

Head Style

Dee chamfer

Head Diameter

0.655 inches

Head Height

Between 0.190 inches and 0.200 inches

Distance From Centerline To Flat

Between 0.247 inches and 0.251 inches

First Diameter From Head

Between 0.3902 inches and 0.3906 inches

Second Diameter From Head

Between 0.333 inches and 0.343 inches

Third Diameter From Head

Between 0.3902 inches and 0.3906 inches

Fourth Diameter From Head

0.300 inches

Distance From Largest Bearing Surface Of Head To End Of First Diameter

Between 0.405 inches and 0.415 inches

Distance From Largest Bearing Surface Of Head To End Of Second Diameter

Between 0.460 inches and 0.480 inches

Distance From Largest Bearing Surface Of Head To End Of Third Diameter

0.730 inches

Distance From Largest Bearing Surface Of Head To End Of Fourth Diameter

0.830 inches

Thread Diameter

0.375 inches

Thready Qty Per Inch (tpi)

Hardness Rating

26.0 rockwell c and 32.0 rockwell c

Criticality Code Justification

Aawc and aawe

Externally Relieved Body Diameter Quantity

Material

Steel comp 431

Material Specification

Ams 5628 assn standard single material response

Thread Series Designator

Unf

NSN

5306-01-012-9400

Part Number

2057D139

Description

Bolt,externally Relieved Body

CAGE

0AHP5

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

Part 2057D139 NSN 5306-01-012-9400

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06675

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment