PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

381-21Needle,valve Inflator

Tactair Fluid Controls Inc · NSN 4920-00-300-1299 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-00-300-1299 — this item is cataloged by the U.S. Government under National Stock Number 4920-00-300-1299. Primary manufacturer part number: 381-21.
Features
  • Needle,valve Inflator — FSC 4920
  • General Characteristics Item Description: STAINLESS STEEL,PASSIVATED,0.812 IN. LG IN
  • 1 verified cross-reference
  • Primary manufacturer: Tactair Fluid Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Needle,valve Inflator, cataloged under National Stock Number 4920-00-300-1299, 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 Tactair Fluid Controls Inc. Government technical data includes 1 verified specification, 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4920-00-300-1299
Primary Part Number381-21
Item NameNeedle,valve Inflator
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerTactair Fluid Controls Inc
StatusACTIVE
General Characteristics Item DescriptionSTAINLESS STEEL,PASSIVATED,0.812 IN. LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-627-341810-20087-2 INTERCHANGEABLE
Expansion Joint,pipe
The Boeing Company Div Legacy Wichita
5950-00-972-3245332-1006-22 INTERCHANGEABLE
Reactor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5307-01-303-817938121 INTERCHANGEABLE
Stud,plain
Jergens Inc Div Tooling Components Division
5895-01-392-5248CODEX6216DTM INTERCHANGEABLE
Enhanced Base
Motorola/codex Corp Sub of Motorola Inc
5120-01-581-0846 INTERCHANGEABLE
Socket,socket Wrench
6510-01-616-6857 INTERCHANGEABLE
Dressing,burn,first Aid
1560-01-724-760738121 INTERCHANGEABLE
Support,structural Component,air
Avtechtyee Inc Dba Avtech
Cross-Reference Index
Part NumberManufacturer
381-21 PRIMARY Tactair Fluid Controls Inc (USA)
Related Parts
4730-00-627-3418INTERCHANGEABLE
EXPANSION JOINT,PIPE
10-20087-2
5950-00-972-3245INTERCHANGEABLE
REACTOR
332-1006-22
5307-01-303-8179INTERCHANGEABLE
STUD,PLAIN
38121
5895-01-392-5248INTERCHANGEABLE
ENHANCED BASE
CODEX6216DTM
5120-01-581-0846INTERCHANGEABLE
SOCKET,SOCKET WRENCH
6510-01-616-6857INTERCHANGEABLE
DRESSING,BURN,FIRST AID
1560-01-724-7607INTERCHANGEABLE
SUPPORT,STRUCTURAL COMPONENT,AIR
38121

Frequently Asked Questions

What is NSN 4920-00-300-1299?

NSN 4920-00-300-1299 is a Needle,valve Inflator, manufactured by Tactair Fluid Controls Inc, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-00-300-1299?

NSN 4920-00-300-1299 has 1 cross-referenced part number: 381-21 (Tactair Fluid Controls Inc).

What NSN replaces 4920-00-300-1299?

There are 7 known substitutes for 4920-00-300-1299: 4730-00-627-3418, 5950-00-972-3245, 5307-01-303-8179 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 381-21?

Key specifications for 381-21: End Item Identification: P/O TYPE MB-1 TESTER,IN SUPPORT OF KC135 AND THE B52 ACFT; General Characteristics Item Description: STAINLESS STEEL,PASSIVATED,0.812 IN. LG 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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