Hole Diameter: 0.181 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
Identification
NSN: 5310-00-404-8399
NIIN: 004048399
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
General Description
The Washer,flat, cataloged under National Stock Number 5310-00-404-8399, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-404-8399
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Overall Diameter
0.562 INCHES NOMINAL IN
Cross-Sectional Shape Style
RECTANGULAR
Surface Treatment
CADMIUM OVERALL
Peripheral Shape Style
ROUND
Material
STEEL OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.181 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
Thickness
0.125 INCHES NOMINAL IN
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 Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5935-00-577-24622P1111POSSIBLE MATCH
PLUG,TELEPHONE
Possible match (shared part number)Switchcraft Inc.
4310-01-010-2766POSSIBLE MATCH
SPOOL ASSEMBLY
Possible match (shared part number)
5330-01-075-597428088POSSIBLE MATCH
PACKING,PREFORMED
Possible match (shared part number)Komatsu America Corporation
4720-01-217-923728088POSSIBLE MATCH
HOSE,METALLIC
Possible match (shared part number)Gates Corporation
4720-01-273-10562808-8POSSIBLE MATCH
HOSE,NONMETALLIC
Possible match (shared part number)Murdock Industrial, Inc.
5935-01-312-051928088POSSIBLE MATCH
CONNECTOR,RECEPTACLE,ELECTRICAL
Possible match (shared part number)Viavi Solutionsllc
5910-01-397-05850280880006POSSIBLE MATCH
CAPACITOR,FIXED,MICA DIELECTRIC
Possible match (shared part number)Riimic, Llc Dba Sunair Electronics
3110-01-422-524828088POSSIBLE MATCH
BEARING,BALL,ANNULAR
Possible match (shared part number)Ontic Engineering and Manufacturing, Inc.
8040-01-510-366228088POSSIBLE MATCH
ADHESIVE
Possible match (shared part number)Momentive Performance Materials Inc.
4730-01-601-9012POSSIBLE MATCH
PLUG,PIPE
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
28-088
5/9Secondary reference
Du Page Mfg Co
28-088
3/2Design control — primary reference
U.S. Government activity
Related Parts
5935-00-577-2462POSSIBLE MATCH
PLUG,TELEPHONE
2P1111
4310-01-010-2766POSSIBLE MATCH
SPOOL ASSEMBLY
5330-01-075-5974POSSIBLE MATCH
PACKING,PREFORMED
28088
4720-01-217-9237POSSIBLE MATCH
HOSE,METALLIC
28088
4720-01-273-1056POSSIBLE MATCH
HOSE,NONMETALLIC
2808-8
5935-01-312-0519POSSIBLE MATCH
CONNECTOR,RECEPTACLE,ELECTRICAL
28088
5910-01-397-0585POSSIBLE MATCH
CAPACITOR,FIXED,MICA DIELECTRIC
0280880006
3110-01-422-5248POSSIBLE MATCH
BEARING,BALL,ANNULAR
28088
8040-01-510-3662POSSIBLE MATCH
ADHESIVE
28088
4730-01-601-9012POSSIBLE MATCH
PLUG,PIPE
Frequently Asked Questions
What is NSN 5310-00-404-8399?
NSN 5310-00-404-8399 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
What NSN replaces 5310-00-404-8399?
10 possible matches (shared part number, not a government interchangeability claim): 5935-00-577-2462, 4310-01-010-2766, 5330-01-075-5974. Verify interchangeability with system specifications before substitution.
What are the specifications of 5310-00-404-8399?
Key specifications for 5310-00-404-8399: Overall Diameter: 0.562 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: CADMIUM OVERALL; Peripheral Shape Style: ROUND. 8 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-404-8399 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.