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5305-00-207-5560

Find complete technical information, availability, and procurement data for: 5305-00-207-5560

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5305-00-207-5560
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-207-5560
Item Name Code
06657
Assigment Date
04/08/1973 (53 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.

2a thread class, 1.250 inches maximum thread length, right-hand thread direction, 1.250 inches minimum fastener length, round 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
1.250 inches maximum
Fastener Length
1.250 inches minimum
Head Style
round
Head Diameter
0.443 inches minimum and 0.472 inches maximum
Head Height
0.161 inches minimum and 0.174 inches maximum
Internal Drive Style
slot
Nominal Thread Diameter
0.250 inches
Thread Quantity Per Inch
20
Screw Material
steel
Screw Surface Treatment
cadmium
Screw Surface Treatment Document And Classification
qq-p-416 type 2 class 3 fed spec single treatment response
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
820243G32A1 Machine Screw
820243G32AI Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-207-5560?
The FSCG of the NSN 5305-00-207-5560 is 5305
Does the NSN 5305-00-207-5560 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-207-5560 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 5305-00-207-5560 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-207-5560 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 5305-00-207-5560 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Sun, Apr 8, 1973

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