The Washer,flat, cataloged under National Stock Number 5310-01-673-2217, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Washer,flat
FSC / FSG
5310 — Nuts and Washers (FSG 53)
Technical Specifications
Parameter
Value
NSN
5310-01-673-2217
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-01-673-3918845-8616959 ITEM 26POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Naval Sea Systems Command
5307-01-673-5206845-8616959 ITEM 16POSSIBLE MATCH
STUD,CONTINUOUS THREAD
Possible match (shared part number)Naval Sea Systems Command
5305-01-676-6924845-8616959 ITEM 27POSSIBLE MATCH
SETSCREW
Possible match (shared part number)Naval Sea Systems Command
3120-01-701-2545845-7286250-ITEM NO-51POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)Naval Sea Systems Command
3120-01-701-2547845-7286250-ITEM NO-44POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
845-7286250 PC 54
5/1Secondary reference
Naval Sea Systems Command
2644-820-08 ITEM 31
5/1Secondary reference
U.S. Government activity
845-8616959 ITEM 31
5/1Secondary reference
Naval Sea Systems Command
2640-808X1 PC 54
3/2Design control — primary reference
U.S. Government activity
845-7286250
D/9Drawing number reference only
Naval Sea Systems Command
845-8616959
D/9Drawing number reference only
Naval Sea Systems Command
Related Parts
5305-01-673-3918POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
845-8616959 ITEM 26
5307-01-673-5206POSSIBLE MATCH
STUD,CONTINUOUS THREAD
845-8616959 ITEM 16
5305-01-676-6924POSSIBLE MATCH
SETSCREW
845-8616959 ITEM 27
3120-01-701-2545POSSIBLE MATCH
BEARING,WASHER,THRUST
845-7286250-ITEM NO-51
3120-01-701-2547POSSIBLE MATCH
BEARING,WASHER,THRUST
845-7286250-ITEM NO-44
Frequently Asked Questions
What is NSN 5310-01-673-2217?
NSN 5310-01-673-2217 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
What NSN replaces 5310-01-673-2217?
5 possible matches (shared part number, not a government interchangeability claim): 5305-01-673-3918, 5307-01-673-5206, 5305-01-676-6924. Verify interchangeability with system specifications before substitution.
Is NSN 5310-01-673-2217 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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.