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Externally Relieved Body Screw NSN 5305-01-640-6994

Item Description

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

NSN 5305-01-640-6994 NSN: 5305-01-640-6994

Features and Characteristics

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.298 inches and 0.328 inches
Fastener Length
1.250 inches
Head Style
Knurled no. 4
Head Diameter
Between 0.495 inches and 0.505 inches
Head Height
Between 0.547 inches and 0.579 inches
Internal Drive Style
Slot
End Application
An/spn-41
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Material
Stainless steel
Material Specification
Astm a581-75 assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unf
FSC
5305 Screws
NIIN
016406994
NSN
5305016406994

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
6114-SS-2528
Cage Code:
1YGB8
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 5305-01-640-6994
What are the manufacturers of nsn 5305016406994?
Does this nsn 5305016406994 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305016406994
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). it is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. see also bolt, externally relieved body and bolt, internal wrenching.
Does nsn 5305016406994 contain any precious metals?
No precious metal content.
Does nsn 5305016406994 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305016406994?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
01852
FIIG:
A003B0
App. Key:
SE
Cond. Code:
1
Status:
A

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