Model: 1237-18-50D

Shear Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.334 inches
Fastener Length
Between 4.444 inches and 4.474 inches
Head Style
Spline drive shear head
Head Height
0.609 inches
Grip Diameter
Between 1.1225 inches and 1.1240 inches
Shank Unthreaded Hole Diameter
0.141 inches first hole and 0.151 inches first hole
Single Shear Strength
108000 pounds per square inch
Head Minor Diameter
1.625 inches
Thread Diameter
1.250 inches
Grip Length
3.125 inches
Thready Qty Per Inch (tpi)
12
Min. Tensile Strength (psi)
180000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center
4.256 inches first hole
Material
Nickel alloy 718
Material Specification
Ams 5662 assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unjf
NSN
5306-01-422-1808
Part Number
1237-18-50D
Description
Bolt,shear
CAGE

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

Part 1237-18-50D NSN 5306-01-422-1808

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15903
FIIG:
A003B0
Concept No.:
App. Key:
BX
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

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Schedule B and Export
  • Schedule B: 7508900000
  • SITC: 69975
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)

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