Model: 26-760520-2

Internally Relieved Body Bolt

Properties:

Threads Per Inch
32 counterbore
Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.470 inches
Fastener Length
1.500 inches
Head Style
Hexagon
Head Height
0.200 inches
Width Between Flats
Between 0.619 inches and 0.625 inches
Shoulder Diameter
Between 0.4371 inches and 0.4373 inches
Shoulder Length
1.030 inches
Shank Unthreaded Hole Diameter
0.096 inches first hole
Concentric Hole Depth
Between 0.460 inches and 0.520 inches
Concentric Hole Diameter
Between 0.1300 inches and 0.1389 inches
Internal Thread Length
0.260 inches counterbore
Thread Diameter
0.375 inches
Thread Series
Unc counterbore
Internal Thread Direction
Right-hand counterbore
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
180000 pounds per square inch
Hardness Rating
39.0 rockwell c and 43.0 rockwell c
Thread Size
0.164 inches counterbore
Criticality Code Justification
Aavh
Distance From Head Largest Bearing Surface To Shank Hole Center
1.320 inches first hole
Internal Thread Class
3b counterbore
Material
Steel comp 4130
Material Specification
Mil-s-6758 military specification single material response
Surface Treatment
Cadmium threads
Surface Treatment
Chromium grip
Surface Treatment
Cadmium head
Surface Treatment Specification
Cva5-2 fscm 80378 mfr ref single treatment response head
Surface Treatment Specification
Cva5-2 fscm 80378 mfr ref single treatment response threads
Surface Treatment Specification
Cva5-5, type 11b fscm 80378 mfr ref single treatment response grip
Style Designator
Counterbore threaded
Test Data Document
81349-mil-i-6868 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Unf
NSN
5306-00-224-0069
Part Number
26-760520-2
Description
Bolt,internally Relieved Body
CAGE
80378

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 26-760520-2 NSN 5306-00-224-0069

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:
Y

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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