Model: A51B24668-19

Internally Relieved Body Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.610 inches
Fastener Length
Between 2.422 inches and 3.647 inches
Head Style
Round w/wrench flats
Head Diameter
1.710 inches
Head Height
Between 0.140 inches and 0.150 inches
Width Between Flats
1.138 inches
Hole Diameter
Between 0.106 inches and 0.116 inches
Shoulder Diameter
Between 1.1468 inches and 1.1473 inches
Shoulder Length
Between 3.032 inches and 3.037 inches
Concentric Hole Depth
Between 2.592 inches and 2.597 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
Surface Treatment
Cadmium
Style Designator
Concentric hole unthreaded
Thread Series Designator
Unjf
NSN
5306-01-394-5397
Part Number
A51B24668-19
Description
Bolt,internally Relieved Body
CAGE
61174

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 A51B24668-19 NSN 5306-01-394-5397

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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