Model: A51B24668-21

Internally Relieved Body Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.297 inches
Fastener Length
Between 3.928 inches and 3.933 inches
Head Style
Dee chamfer
Head Diameter
1.710 inches
Head Height
0.145 inches
Distance From Centerline To Flat
0.569 inches
Shoulder Diameter
Between 1.1468 inches and 1.1473 inches
Shoulder Length
Between 3.318 inches and 3.323 inches
Concentric Hole Depth
Between 2.878 inches and 2.883 inches
Concentric Hole Diameter
Between 0.499 inches and 0.506 inches
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
24
Hardness Rating
46.0 rockwell c and 49.0 rockwell c
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel
Material Specification
G-1010, cage 26512 mfr ref single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Gss9056, cage 26512 mfr ref single treatment response
Style Designator
Concentric hole unthreaded
Thread Series Designator
Unjf
NSN
5306-01-386-8147
Part Number
A51B24668-21
Description
Bolt,internally Relieved Body
CAGE
06892

An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see bolt, fluid passage.

Part A51B24668-21 NSN 5306-01-386-8147

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06676
FIIG:
A003B0
Concept No.:
App. Key:
BN
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

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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