Model: 7538301

Internally Relieved Body Bolt

Special Features:

Concentric hole counterbored to 0.253 in min 0.257 in max diameter by 3/16 in deep on head end

Properties:

Threads Per Inch
24 counterbore
Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.531 inches
Fastener Length
1.406 inches
Head Style
Hexagon
Head Height
0.625 inches
Width Between Flats
0.500 inches
Shoulder Diameter
Between 0.371 inches and 0.375 inches
Shoulder Length
0.750 inches
Concentric Hole Diameter
Between 0.120 inches and 0.130 inches
Internal Thread Length
0.219 inches counterbore
Thread Diameter
0.312 inches
Thread Series
Uns counterbore
Internal Thread Direction
Right-hand counterbore
Thready Qty Per Inch (tpi)
18
Thread Size
0.437 inches counterbore
Nonstandard Internal Thread Pitch Diameter
+0.4104 to 0.4128 inches counterbore
Material
Steel
Material Specification
1280-mo gm fscm 24617 mfr ref single material response
Surface Treatment
Zinc
Surface Treatment Specification
4252-m, cl a fscm 24617 mfr ref single treatment response
Style Designator
Counterbore threaded
Thread Series Designator
Unc
NSN
5306-00-753-8301
Part Number
7538301
Description
Bolt,internally Relieved Body
CAGE
19207

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 7538301 NSN 5306-00-753-8301

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
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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