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
2a
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)
24
Hardness Rating
55.0 rockwell c
Externally Relieved Body Diameter Quantity
3
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:
BF
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
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

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