PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20634Orifice

Avox Systems Inc Dba Avox Systems Inc · NSN 4920-00-885-7239 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-00-885-7239 — this item is cataloged by the U.S. Government under National Stock Number 4920-00-885-7239. Primary manufacturer part number: 20634.
Features
  • Orifice — FSC 4920
  • 1 verified cross-reference
  • Primary manufacturer: Avox Systems Inc Dba Avox Systems Inc
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Orifice, cataloged under National Stock Number 4920-00-885-7239, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameOrifice
FSC / FSG4920 — No Item Name Available (FSG 49)
ManufacturersAvox Systems Inc Dba Avox Systems Inc (CAGE 53655)
Technical Specifications
ParameterValue
NSN4920-00-885-7239
Primary Part Number20634
Item NameOrifice
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5133-00-224-4028 INTERCHANGEABLE
Drill,twist
6645-00-224-8632 INTERCHANGEABLE
Clock,marine,mechanical
1660-00-622-6237AF40C-25 INTERCHANGEABLE
Valve,air,shut Off
Tactair Fluid Controls Inc
5342-00-777-7643H271-1 INTERCHANGEABLE
Latch Assembly,cowl
Hartwell Corporation
5120-01-240-9827 INTERCHANGEABLE
Puller Bar,2 Stage
5360-01-434-031020634 INTERCHANGEABLE
Spring,helical,compression
Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
Cross-Reference Index
Part NumberManufacturer
20634 PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
Related Parts
5133-00-224-4028INTERCHANGEABLE
DRILL,TWIST
6645-00-224-8632INTERCHANGEABLE
CLOCK,MARINE,MECHANICAL
1660-00-622-6237INTERCHANGEABLE
VALVE,AIR,SHUT OFF
AF40C-25
5342-00-777-7643INTERCHANGEABLE
LATCH ASSEMBLY,COWL
H271-1
5120-01-240-9827INTERCHANGEABLE
PULLER BAR,2 STAGE
5360-01-434-0310INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
20634

Frequently Asked Questions

What is NSN 4920-00-885-7239?

NSN 4920-00-885-7239 is a Orifice, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-00-885-7239?

NSN 4920-00-885-7239 has 1 cross-referenced part number: 20634 (Avox Systems Inc Dba Avox Systems Inc).

What NSN replaces 4920-00-885-7239?

There are 6 known substitutes for 4920-00-885-7239: 5133-00-224-4028, 6645-00-224-8632, 1660-00-622-6237 and 3 more. Verify interchangeability with system specifications before substitution.

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