The Washer,flat, cataloged under National Stock Number 5310-01-729-2839, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
5310-01-729-2839
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 Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5330-01-729-28734460341-0118POSSIBLE MATCH
RETAINER,PACKING
Possible match (shared part number)Marotta Controls Inc
5315-01-729-3829103595-0052POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Marotta Controls Inc
5305-01-729-3852103593-1036POSSIBLE MATCH
SCREW,MACHINE
Possible match (shared part number)Marotta Controls Inc
5330-01-729-38754460341-0014POSSIBLE MATCH
RETAINER,PACKING
Possible match (shared part number)Marotta Controls Inc
4820-01-729-3907285091-1002POSSIBLE MATCH
VALVE-HAND,BYPASS
Possible match (shared part number)Marotta Controls Inc
5330-01-729-39274460341-0016POSSIBLE MATCH
RETAINER,PACKING
Possible match (shared part number)Marotta Controls Inc
5305-01-729-3944107572-0122POSSIBLE MATCH
RETAINER,SCREW
Possible match (shared part number)Marotta Controls Inc
5305-01-729-3947104870-0001POSSIBLE MATCH
POPPET,SCREW
Possible match (shared part number)Marotta Controls Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
107489-0001
3/2Design control — primary reference
U.S. Government activity
285091-1002 ITEM 12
5/2Secondary reference
U.S. Government activity
285091-1002
D/9Drawing number reference only
U.S. Government activity
Related Parts
5330-01-729-2873POSSIBLE MATCH
RETAINER,PACKING
4460341-0118
5315-01-729-3829POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
103595-0052
5305-01-729-3852POSSIBLE MATCH
SCREW,MACHINE
103593-1036
5330-01-729-3875POSSIBLE MATCH
RETAINER,PACKING
4460341-0014
4820-01-729-3907POSSIBLE MATCH
VALVE-HAND,BYPASS
285091-1002
5330-01-729-3927POSSIBLE MATCH
RETAINER,PACKING
4460341-0016
5305-01-729-3944POSSIBLE MATCH
RETAINER,SCREW
107572-0122
5305-01-729-3947POSSIBLE MATCH
POPPET,SCREW
104870-0001
Frequently Asked Questions
What is NSN 5310-01-729-2839?
NSN 5310-01-729-2839 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
What NSN replaces 5310-01-729-2839?
8 possible matches (shared part number, not a government interchangeability claim): 5330-01-729-2873, 5315-01-729-3829, 5305-01-729-3852. Verify interchangeability with system specifications before substitution.
Is NSN 5310-01-729-2839 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.