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5305-01-069-2731

Find complete technical information, availability, and procurement data for: 5305-01-069-2731

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5305-01-069-2731
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-069-2731
Item Name Code
18257
Assigment Date
12/12/1978 (47 years ago)

An insulator designed to fit into and reduce the effective diameter of the hole(s). It may include mounting and/or conducting hardware. For flexible bushing-type insulators that are self-retaining and consist of two facing flanges separated by a neck, see grommet, nonmetallic. Also see spacer, sleeve and bushing, sleeve. Excludes:insulation sleeving, electrical.

right-hand thread direction, 0.344 inches minimum and 0.500 inches maximum thread length, 0.469 inches minimum and 0.500 inches maximum fastener length, 2a thread class, hexagon head style

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
0.344 inches minimum and 0.500 inches maximum
Fastener Length
0.469 inches minimum and 0.500 inches maximum
Head Style
hexagon
Head Height
0.150 inches minimum and 0.163 inches maximum
Width Between Flats
0.428 inches minimum and 0.438 inches maximum
Shank Unthreaded Hole Diameter
0.074 inches minimum and 0.082 inches maximum first hole
Nominal Thread Diameter
0.250 inches
Thread Quantity Per Inch
20
Minimum Tensile Strength
70000 pounds per square inch
Hardness Rating
235.0 brinell standard maximum overall
Minimum Yield Strength
40000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center
0.350 inches minimum and 0.401 inches maximum first hole
Surface Finish
63.0 microinches threads
Material
steel comp 410 or steel comp 416 or steel comp 430 overall
Material Document And Classification
66 fed std all material responses overall
Surface Treatment
passivate overall
Surface Treatment Document And Classification
qq-p-35 fed spec single treatment response overall
Thread Series Designator
unc
Nondefinitive Spec/Std Data
2 type and 10p style

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
MS51109-3 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-069-2731?
The FSCG of the NSN 5305-01-069-2731 is 5305
Does the NSN 5305-01-069-2731 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-069-2731 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 5305-01-069-2731 contain precious materials?
Precious metal content is unknown
Does NSN 5305-01-069-2731 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 5305-01-069-2731 was assigned to the Federal Catalog?
It was assigned 47 years ago, on Tue, Dec 12, 1978

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