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NSN 5310-01-643-7386Government record, cited
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Washer, Flat5310-01-643-7386

NSN 5310-01-643-7386 · NIIN 016437386 · Part number 572-8200778 ITEM 24
Naval Sea Systems Command · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5310-01-643-7386 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-643-7386. Manufacturer of record part number: 572-8200778 ITEM 24.
Also searched as  5310-01-643-7386 · 5310016437386 · NIIN 016437386 · 01-643-7386 · FSC 5310 Nuts and Washers · CAGE 53711 · 572-8200778 ITEM 24 · 572-8200777 · 572-8200777 REV-B ITEM 9 · 572-8200778
Nearby stock numbers  ·
AF 4.500 INCHES NOMINAL IN NUT + WASHER
5310-01-643-7386 — Nuts and Washers
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 4.500 INCHES NOMINAL IN
  • Material Document and Classification: ASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Material: COPPER ALLOY OVERALL
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 2.7813 INCHES NOMINAL IN
Identification
  • NSN: 5310-01-643-7386
  • NIIN: 016437386
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 572-8200778 ITEM 24
  • Manufacturer: Naval Sea Systems Command
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-643-7386, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-643-7386
Primary Part Number572-8200778 ITEM 24
Item NameWasher,flat
FSC / FSG5310 / 53 — Nuts and Washers
ManufacturerNaval Sea Systems Command
StatusACTIVE
Overall Diameter4.500 INCHES NOMINAL IN
Material Document and ClassificationASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
MaterialCOPPER ALLOY OVERALL
Center Hole Shape StyleROUND
Hole Diameter2.7813 INCHES NOMINAL IN
Thickness0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-01-643-8464J2295J429C2R12-Z52G5 POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)Sae International Dba Sae International
5315-01-644-1376572-8200778 ITEM 42 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Naval Sea Systems Command
5315-01-644-2061782-7666263 ITEM 4 POSSIBLE MATCH
KEY,MACHINE
Possible match (shared part number)Naval Sea Systems Command
5315-01-644-2063782-7666263 ITEM 6 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Naval Sea Systems Command
5315-01-644-2070782-7666263 ITEM 3 POSSIBLE MATCH
KEY,MACHINE
Possible match (shared part number)Naval Sea Systems Command
5315-01-646-8452572-8200778 NO 56 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Naval Sea Systems Command
5315-01-646-8453572-8200778 NO 168 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Naval Sea Systems Command
5310-01-646-8475572-8200778 NO 66 POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
5310-01-647-1148572-8200778 ITEM 67 POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
5310-01-647-1295572-8200778 ITEM 59 POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
572-8200778 ITEM 24 PRIMARY Naval Sea Systems Command (USA)
572-8200777 REV-B ITEM 9 Naval Sea Systems Command (USA)
Reference documents
ReferenceMeaning
572-8200777 D/9 Drawing number reference only
Naval Sea Systems Command
572-8200778 D/9 Drawing number reference only
Naval Sea Systems Command
Related Parts
5305-01-643-8464POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
J2295J429C2R12-Z52G5
5315-01-644-1376POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
572-8200778 ITEM 42
5315-01-644-2061POSSIBLE MATCH
KEY,MACHINE
782-7666263 ITEM 4
5315-01-644-2063POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
782-7666263 ITEM 6
5315-01-644-2070POSSIBLE MATCH
KEY,MACHINE
782-7666263 ITEM 3
5315-01-646-8452POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
572-8200778 NO 56
5315-01-646-8453POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
572-8200778 NO 168
5310-01-646-8475POSSIBLE MATCH
WASHER,FLAT
572-8200778 NO 66
5310-01-647-1148POSSIBLE MATCH
WASHER,FLAT
572-8200778 ITEM 67
5310-01-647-1295POSSIBLE MATCH
WASHER,FLAT
572-8200778 ITEM 59
2040-01-647-2914POSSIBLE MATCH
DOG,DOOR,MARINE
572-8200777 AY 43
2040-01-647-2926POSSIBLE MATCH
DOG,DOOR,MARINE
572-8200777 AY 42

Frequently Asked Questions

What is NSN 5310-01-643-7386?

NSN 5310-01-643-7386 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-643-7386?

NSN 5310-01-643-7386 has 2 manufacturer part numbers on file: 572-8200778 ITEM 24 (Naval Sea Systems Command), 572-8200777 REV-B ITEM 9 (Naval Sea Systems Command).

What NSN replaces 5310-01-643-7386?

12 possible matches (shared part number, not a government interchangeability claim): 5305-01-643-8464, 5315-01-644-1376, 5315-01-644-2061. Verify interchangeability with system specifications before substitution.

What are the specifications of 572-8200778 ITEM 24?

Key specifications for 572-8200778 ITEM 24: Overall Diameter: 4.500 INCHES NOMINAL IN; Material Document and Classification: ASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-643-7386 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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