NSN 5310-01-419-6558 · NIIN 014196558 · Part number 20-266
Balmar Acquisition Company Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 0L9X3
Government record, cited
NSN 5310-01-419-6558 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-419-6558. Manufacturer of record part number: 20-266.
Also searched as5310-01-419-6558 ·
5310014196558 ·
NIIN 014196558 ·
01-419-6558 ·
FSC 5310 Nuts and Washers · CAGE 0L9X3 · 20-266
Manufacturer of record: Balmar Acquisition Company Llc
Identification
NSN: 5310-01-419-6558
NIIN: 014196558
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 20-266
Manufacturer: Balmar Acquisition Company Llc
General Description
The Washer,flat, cataloged under National Stock Number 5310-01-419-6558, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Balmar Acquisition Company Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 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
5310-01-419-6558
Primary Part Number
20-266
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Balmar Acquisition Company Llc
Status
ACTIVE
Overall Diameter
1.250 INCHES NOMINAL IN
Peripheral Shape Style
ROUND
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 Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6650-01-424-2489B61781-01POSSIBLE MATCH
WINDOW,OPTICAL INSTRUMENT
Possible match (shared part number)Munters Corporation Dba Munters Des Champs Products Div Cargocaire
4440-01-508-133630116-01POSSIBLE MATCH
DEHUMIDIFIER,DESICCANT,ELECTRIC
Possible match (shared part number)Munters Corporation Dba Munters Des Champs Products Div Cargocaire
5970-01-536-619620266POSSIBLE MATCH
INSULATOR,PLATE
Possible match (shared part number)Vicor Corp Dba Vicorpowercom
NSN 5310-01-419-6558 is a Washer,flat, manufactured by Balmar Acquisition Company Llc, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-419-6558?
NSN 5310-01-419-6558 has 1 manufacturer part number on file: 20-266 (Balmar Acquisition Company Llc).
What NSN replaces 5310-01-419-6558?
3 possible matches (shared part number, not a government interchangeability claim): 6650-01-424-2489, 4440-01-508-1336, 5970-01-536-6196. Verify interchangeability with system specifications before substitution.
What are the specifications of 20-266?
Key specifications for 20-266: Overall Diameter: 1.250 INCHES NOMINAL IN; Peripheral Shape Style: ROUND. 2 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-419-6558 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.