Home » FSC Catalog » Nuts And Washers » 5310-00-018-0268

Flat Washer

SKU: 5310000180268 | Model: 11629-1
NSN 5310-00-018-0268 NSN 5310-00-018-0268

Rectangular cross-sectional shape style, 0.312" hole diameter, round peripheral shape style, 1 round center hole shape style, 0.060" thickness

Specifications from the Manufacturer

Cross-sectional Shape Style:
Hole Diameter:
0.312 inches nominal
Peripheral Shape Style:
Center Hole Shape Style:
1 round
Center Hole Shape Style:
0.060 inches minimum and 0.064 inches maximum
Overall Diameter:
0.620 inches nominal
Surface Finish:
63.0 microinches bottom
Surface Finish:
63.0 microinches top
Part Name Assigned By Controlling Agency:
Navy special project
Material Document And Classification:
Ams 4631 assn std single material response overall

Pricing and Availability

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NSN 5310-00-018-0268 Datasheet

Supply Class:


Cross Reference:

  • 11629-1

Cage Codes:

  • B.w. Elliott Manufacturing Co., Llc (CAGE 72166)

Replaced or Cancelled:

5310-00-018-0268 is not a replacement of any national stock number and has not been cancelled or replaced itself.


NIIN: 000180268
NSN: 5310000180268
DEMIL Code Meaning: Non-usml/non-ccli - no demil or dod tsc required. department of commerce may impose licensing requirements to certain destinations.

Freight Codes:

NMF Desc: Washer Or Gaskets, Iron Or Steel,
NMFC: 194160
UFC: 55210
LTL: 50.0
WCC: Metal hardware
TCC: No special type of cargo code applicable
SHC: Other or no special handling required (sh)
ADC: Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC: Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater
ASH: No special handling required.

Management Codes:

CTL: ------- (MOE: DS)
AAC: Not stocked, centrally procured # (non-stocked items). imm/service centrally managed but not stocked item. procurement will be initiated only after receipt of a requisition.
QUP: 1
SLC: 0

Reference Drawing:

[drawing of 5310-00-018-0268]

Questions & Answers:

What are the historical prices recorded for this stock number?
No pre-dated pricing for this NSN could be found.
Does NSN 5310-00-018-0268 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
No recorded entities for this stock number.
How is national stock number 5310-00-018-0268 defined?
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.
What is the NIIN of NSN 5310-00-018-0268?
000180268 or 00-018-0268
Does this item require Demilitarization?
Non-usml/non-ccli - no demil or dod tsc required. department of commerce may impose licensing requirements to certain destinations. (note 9).
Is NSN 5310000180268 ITAR controlled?
No. This item is not ITAR Controlled.
What is the most recent solicitation for NSN 5310000180268?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
May 15, 1968