Model: 91251A105

Socket Head Cap Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.1875 inches
Fastener Length
0.2995 inches
Head Style
Fillister
Head Diameter
0.183 inches
Head Height
0.112 inches
Internal Drive Style
Hexagon
End Application
Sitac
Thread Diameter
0.112 inches
Width Across Flats
0.0937 inches
Thready Qty Per Inch (tpi)
40
Part Name Assigned By Controlling Agency
Black-oxide alloy steel socket head cap screw 4-40 thread, 3/16 inch length
Color
Black
Material
Steel
Surface Treatment
Black chemical finish and oxide
Thread Series Designator
Unc
NSN
5305-01-603-0751
Part Number
91251A105
Description
Screw,cap,socket Head
CAGE
39428

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 91251A105 NSN 5305-01-603-0751

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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