Model: 91253A595

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 1.125 inches and 1.687 inches
Fastener Length
2.802 inches
Head Style
Flat countersunk
Head Diameter
0.656 inches
Internal Drive Style
Hexagon
Thread Diameter
0.3125 inches
Width Across Flats
0.1875 inches
Thready Qty Per Inch (tpi)
18
Min. Tensile Strength (psi)
144000 pounds per square inch
Hardness Rating
39.0 rockwell c and 44.0 rockwell c
Countersink Angle
82.0 degrees
Material
Steel
Surface Treatment
Zinc
Thread Series Designator
Unc
NSN
5305-01-524-0045
Part Number
91253A595
Description
Screw,cap,socket Head
CAGE
33145

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part 91253A595 NSN 5305-01-524-0045

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
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:
A
ESD:
A
MMAC:
CRITL:
X

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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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