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Socket Head Cap Screw NSN 5305-01-557-8125

Item Description

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.

NSN 5305-01-557-8125 NSN: 5305-01-557-8125

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.250 inches
Fastener Length
1.250 inches
Head Style
Chamfer flange
Head Height
0.500 inches
Width Between Flats
0.375 inches
Extended Washer Diameter
Between 0.735 inches and 0.750 inches
Locking Feature
Pellet locking feature
Internal Drive Style
Hexagon
End Application
Aircraft, ac-130u
Thread Diameter
0.500 inches
Width Across Flats
0.375 inches
Thready Qty Per Inch (tpi)
20
Part Name Assigned By Controlling Agency
Screw, cap, socket head
Material
Steel fastener
Thread Series Designator
Unrf
FSC
5305 Screws
NIIN
015578125
NSN
5305015578125

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
NAS1351N8LN20
Cage Code:
80205
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318152000
  • NAICS: 332722
  • SITC: 69421
  • Description: Bolts and bolts and their nuts or washers exported in the same shipment
  • End Use (Code 12110):
    Iron and steel products, other

Q & A

Frequently asked questions for NSN 5305-01-557-8125
What are the manufacturers of nsn 5305015578125?
Does this nsn 5305015578125 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305015578125
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.
Does nsn 5305015578125 contain any precious metals?
No precious metal content.
Does nsn 5305015578125 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305015578125?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
App. Key:
SC
Cond. Code:
1
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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