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1241957-7

View detailed technical data, stock status, and sourcing information for: 1241957-7

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1241957-7
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-208-8241
Item Name Code
01852
Assigment Date
01/01/1963 (63 years ago)

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.

0.435 inches minimum and 0.441 inches maximum thread length, right-hand thread direction, hexagon head style, 0.935 inches minimum and 0.941 inches maximum fastener length, 2a thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
2a
Thread Direction
right-hand
Thread Length
0.435 inches minimum and 0.441 inches maximum
Fastener Length
0.935 inches minimum and 0.941 inches maximum
Head Style
hexagon
Head Height
0.180 inches nominal
Width Between Flats
0.359 inches minimum and 0.375 inches maximum
First Diameter From Head
0.163 inches nominal
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.438 inches minimum and 0.562 inches maximum
Internal Drive Style
cross recess type 1
Nominal Thread Diameter
0.190 inches
Thread Quantity Per Inch
24
Externally Relieved Body Diameter Quantity
1
Material
steel overall
Thread Series Designator
unc

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
1241957-7 Externally Relieved Body Screw
L241957-7 Externally Relieved Body Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-00-208-8241?
The FSCG of the NSN 5305-00-208-8241 is 5305
Does the NSN 5305-00-208-8241 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-208-8241 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5305-00-208-8241 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-208-8241 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5305-00-208-8241 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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