NSN 5331-01-699-5345 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-699-5345. Manufacturer of record part number: A9813.
The O-Ring, cataloged under National Stock Number 5331-01-699-5345, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Thern Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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
5331-01-699-5345
Primary Part Number
A9813
Item Name
O-Ring
FSC / FSG
5331 / 53 — O-ring
Manufacturer
Thern Inc
Status
ACTIVE
Cross-Sectional Height
0.063 INCHES NOMINAL IN
Outside Diameter
0.7875 INCHES NOMINAL IN
Center Hole Diameter
0.750 INCHES NOMINAL IN
Material
RUBBER BUTADIENE NITRILE
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.
NSN 5331-01-699-5345 is a O-Ring, manufactured by Thern Inc, classified under FSC 5331, O-ring. Status: active.
What part numbers are listed for NSN 5331-01-699-5345?
NSN 5331-01-699-5345 has 1 manufacturer part number on file: A9813 (Thern Inc).
What NSN replaces 5331-01-699-5345?
10 possible matches (shared part number, not a government interchangeability claim): 5331-01-699-5352, 5315-01-699-5407, 3110-01-699-5428. Verify interchangeability with system specifications before substitution.
What are the specifications of A9813?
Key specifications for A9813: Cross-Sectional Height: 0.063 INCHES NOMINAL IN; Outside Diameter: 0.7875 INCHES NOMINAL IN; Center Hole Diameter: 0.750 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: O-RING. 4 specifications are documented in the U.S. Government catalog.
Is NSN 5331-01-699-5345 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.