PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A387O-Ring

Hyco Inc · NSN 5331-00-986-0236 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-986-0236 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-986-0236. Primary manufacturer part number: A387.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER SYNTHETIC
  • Cross-Sectional Height: 0.138 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Hyco Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-986-0236, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Hyco Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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
NSN5331-00-986-0236
Primary Part NumberA387
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerHyco Inc
StatusACTIVE
MaterialRUBBER SYNTHETIC
Cross-Sectional Height0.138 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-100-620801-04451-00 INTERCHANGEABLE
Ball,bearing
Marison Industries Inc Barco Div
4730-00-814-5268A-387 INTERCHANGEABLE
Coupling,tube
Mueller Brass Co Sub of Sharon Steel Corp an Nvf Co
5920-01-039-14833182878 INTERCHANGEABLE
Corona Ball
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6105-01-363-89985N262 INTERCHANGEABLE
Motor,alternating Current
W.w. Grainger, Inc. Div Government Sales Division
Cross-Reference Index
Part NumberManufacturer
A387 Hyco Inc (USA)
Related Parts
3110-00-100-6208INTERCHANGEABLE
BALL,BEARING
01-04451-00
4730-00-814-5268INTERCHANGEABLE
COUPLING,TUBE
A-387
5920-01-039-1483INTERCHANGEABLE
CORONA BALL
3182878
6105-01-363-8998INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5N262

Frequently Asked Questions

What is NSN 5331-00-986-0236?

NSN 5331-00-986-0236 is a O-Ring, manufactured by Hyco Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-986-0236?

NSN 5331-00-986-0236 has 1 cross-referenced part number: A387 (Hyco Inc).

What NSN replaces 5331-00-986-0236?

There are 4 known substitutes for 5331-00-986-0236: 3110-00-100-6208, 4730-00-814-5268, 5920-01-039-1483 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A387?

Key specifications for A387: Material: RUBBER SYNTHETIC; Cross-Sectional Height: 0.138 INCHES NOMINAL IN. 2 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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