Model: BM17020-8-15A

Shear Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.490 inches and 0.557 inches
Fastener Length
Between 1.438 inches and 1.485 inches
Head Style
Double hexagon
Head Height
Between 0.271 inches and 0.291 inches
Width Between Flats
Between 0.741 inches and 0.752 inches
Grip Diameter
Between 0.4982 inches and 0.4991 inches
Thread Diameter
0.500 inches
Grip Length
Between 0.928 inches and 0.948 inches
Thready Qty Per Inch (tpi)
20
Min. Tensile Strength (psi)
220000 pounds per square inch
Hardness Rating
46.0 rockwell c and 50.0 rockwell c
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp h11
Surface Treatment
Cadmium
Thread Series Designator
Unjf
Specification Data
26512-gb511b manufacturers standard
NSN
5306-01-052-1185
Part Number
BM17020-8-15A
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 BM17020-8-15A NSN 5306-01-052-1185

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

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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