PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26827O-Ring

Charles Reed Knight Jr Dba Knight's Armament Company · NSN 5331-01-620-4810 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-620-4810 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-620-4810. Primary manufacturer part number: 26827.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Charles Reed Knight Jr Dba Knight's Armament Company
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-620-4810, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-620-4810
Primary Part Number26827
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCharles Reed Knight Jr Dba Knight's Armament Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5306-00-441-8428 INTERCHANGEABLE
Bolt,externally Relieved Body
5925-00-500-674326827 INTERCHANGEABLE
Circuit Breaker
Honeywell International Inc. Div Aerospace - Torrance
5330-00-757-168010453 INTERCHANGEABLE
Packing,preformed
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
7240-01-629-830926827 INTERCHANGEABLE
Liner,basket
Justrite Manufacturing Company, Llc (del)
Cross-Reference Index
Part NumberManufacturer
26827 PRIMARY Charles Reed Knight Jr Dba Knight's Armament Company (USA)
Related Parts
5306-00-441-8428INTERCHANGEABLE
BOLT,EXTERNALLY RELIEVED BODY
5925-00-500-6743INTERCHANGEABLE
CIRCUIT BREAKER
26827
5330-00-757-1680INTERCHANGEABLE
PACKING,PREFORMED
10453
7240-01-629-8309INTERCHANGEABLE
LINER,BASKET
26827

Frequently Asked Questions

What is NSN 5331-01-620-4810?

NSN 5331-01-620-4810 is a O-Ring, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-620-4810?

NSN 5331-01-620-4810 has 1 cross-referenced part number: 26827 (Charles Reed Knight Jr Dba Knight's Armament Company).

What NSN replaces 5331-01-620-4810?

There are 4 known substitutes for 5331-01-620-4810: 5306-00-441-8428, 5925-00-500-6743, 5330-00-757-1680 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26827?

Key specifications for 26827: Special Features: BATTERY DOOR O-RING, REPAIR PART FOR THE AN/PAS-31; WIDTH: 1.1 IN; HEIGHT: 0.56 IN; LENGTH: 1.1 IN; WEIGHT: 0.01 LB. LBS. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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