Model: 2797921-2

Externally Relieved Body Bolt

Special Features:

Paint one coat of primer to mil-p-23377 or mms 425 and one coat of lusterless matt black no. 3708 federal standard 595 to tte 527 on head of screw only

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.372 inches and 0.408 inches

Fastener Length

Between 1.387 inches and 1.403 inches

Head Style

Hexagon

Head Height

Between 0.223 inches and 0.243 inches

Width Between Flats

Between 0.555 inches and 0.562 inches

First Diameter From Head

Between 0.160 inches and 0.180 inches

Second Diameter From Head

Between 0.760 inches and 0.780 inches

Third Diameter From Head

Between 0.995 inches and 1.015 inches

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

Between 0.261 inches and 0.265 inches

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

Between 0.303 inches and 0.312 inches

Thread Diameter

0.312 inches

Thready Qty Per Inch (tpi)

Hardness Rating

55.0 rockwell c

Externally Relieved Body Diameter Quantity

Material

Steel comp 440f

Material Specification

Astm a582 assn standard single material response

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Thread Series Designator

Unf

NSN

5306-01-185-5857

Part Number

2797921-2

Description

Bolt,externally Relieved Body

CAGE

55972

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 2797921-2 NSN 5306-01-185-5857

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

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