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5305-00-404-1857

Find complete technical information, availability, and procurement data for: 5305-00-404-1857

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5305-00-404-1857
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-404-1857
Item Name Code
18257
Assigment Date
01/20/1972 (54 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

hexagon head style, 2a thread class, right-hand thread direction, 1.500 inches minimum and 1.938 inches maximum thread length, 5.906 inches minimum and 6.000 inches maximum fastener length

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
1.500 inches minimum and 1.938 inches maximum
Fastener Length
5.906 inches minimum and 6.000 inches maximum
Head Style
hexagon
Head Height
0.378 inches minimum and 0.403 inches maximum
Width Between Flats
0.922 inches minimum and 0.938 inches maximum
Nominal Thread Diameter
0.625 inches
Thread Quantity Per Inch
18
Minimum Tensile Strength
80000 pounds per square inch
Hardness Rating
80.0 rockwell b minimum overall
Minimum Yield Strength
30000 pounds per square inch
Surface Finish
63.0 microinches threads
Material
steel comp 301 or steel comp 302 or steel comp 303 or steel comp 303f or steel comp 385 or steel comp 303se or steel comp 304 or steel comp 304l or steel comp 305 or steel comp 308 or steel comp 309 or steel comp 309s or steel comp 310 or steel comp 310s or steel comp 314 or steel comp 316 or steel comp 316l or steel comp 317 or steel comp 321 or steel comp 323 or steel comp 324 or steel comp 347 or steel comp 348 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
unf
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
MS35308-478 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-404-1857?
The FSCG of the NSN 5305-00-404-1857 is 5305
Does NSN 5305-00-404-1857 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 5305-00-404-1857 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-404-1857 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 5305-00-404-1857 was assigned to the Federal Catalog?
It was assigned 54 years ago, on Thu, Jan 20, 1972

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