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Tapping Screw

NSN: 5305-01-628-8295 | Model: 11B4550025

A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes screw, assembled washer.

NSN Properties and Flags
NATO Stock Number
Fastener Length
1.500 inches
Head Style
Hexagon extended washer
Head Height
0.240 inches
Width Between Flats
0.375 inches
Extended Washer Diameter
0.520 inches
Internal Drive Style
W/o internal drive
End Application
Nonmachine Thread Diameter
0.250 inches
Part Name Assigned By Controlling Agency
Self tapping screw
Steel comp 410

Parts List for Fire Refill System  

Other components in the assembly of NSN 4910-01-627-0524

Pricing and Availability

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NSN 5305-01-628-8295 Datasheet

Supply Class (FSC):
Cross Reference:
  • 11B4550025
  • 90822A630
Cage Codes:
  • Edgewood Chemical Biological Center (CAGE 5B5M3)
  • Carr Supply Company Mcmaster (CAGE 39428)
Schedule B & Trade:
  • Schedule B: 7318140000 (NAICS 332722)

    Self-tapping screws of iron or steel

  • SITC: 69421

    Screws, bolts, nuts, screw hooks, rivets, washers and similar articles, threaded, of iron or steel

  • End Use: 12110

    Iron and steel products, other


N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.


A - Item does not contain precious metal.


A - No known electrostatic discharge (esd) or electromagnetic interference (emi) sensitivity.


- Represents items with no adp components


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    096640 - Screws, iron or steel

  • WCC:

    713 - Metal hardware

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater

  • LTL:

    Q - 70.0

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability
    This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $62.33 to $103.88..
Does NSN 5305-01-628-8295 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army
What is the NIIN of NSN 5305-01-628-8295?
016288295 or 01-628-8295
Does NSN 5305-01-628-8295 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5305-01-628-8295?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jun 11, 2014