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Hexagon Head Cap Screw NSN 5305-00-245-5261

Item Description

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

NSN 5305-00-245-5261 NSN: 5305-00-245-5261

Features and Characteristics

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.938 inches
Fastener Length
Between 0.969 inches and 1.000 inches
Head Style
Hexagon
Head Height
Between 0.150 inches and 0.163 inches
Width Between Flats
Between 0.428 inches and 0.437 inches
Shank Unthreaded Hole Diameter
0.074 inches first hole and 0.082 inches first hole
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
150000 pounds per square inch
Hardness Rating
32.0 rockwell c and 38.0 rockwell c
Distance From Head Largest Bearing Surface To Shank Hole Center
0.850 inches first hole and 0.901 inches first hole
Surface Finish
63.0 microinches threads
Material
Steel
Material Specification
Sae gr 8 assn standard single material response
Surface Treatment
Phosphate zinc
Surface Treatment Specification
Mil-p-16232, ty z, cl 2 military specification single treatment response
Thread Series Designator
Unf
Nondefinitive Specification/std Data
2 type and 10p style and 8 grade
FSC
5305 Screws
NIIN
002455261
NSN
5305002455261

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MS51108-8
Cage Code:
96906
Status:
A
MSDS:
Part Number:
FFS85
Cage Code:
81348
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 5305-00-245-5261
What are the manufacturers of nsn 5305002455261?
Does this nsn 5305002455261 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305002455261
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.
Does nsn 5305002455261 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305002455261 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305002455261?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
18257
FIIG:
A003B0
App. Key:
SB
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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