PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MG-21Guard,tube

Air-Vac Engineering Company Inc · NSN 3439-00-467-1957 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-467-1957 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-467-1957. Primary manufacturer part number: MG-21.
Features
  • Guard,tube — FSC 3439
  • 2 verified cross-references
  • Primary manufacturer: Air-Vac Engineering Company Inc
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Guard,tube, cataloged under National Stock Number 3439-00-467-1957, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Air-Vac Engineering Company Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-00-467-1957
Primary Part NumberMG-21
Item NameGuard,tube
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerAir-Vac Engineering Company Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6105-00-241-086908G4AA-AA1-A0 INTERCHANGEABLE
Motor-Tachometer Generator
General Dynamics Motion Control Llc
Cross-Reference Index
Part NumberManufacturer
MG-21 PRIMARY Air-Vac Engineering Company Inc (USA)
MTG9 Air-Vac Engineering Company Inc (USA)
Related Parts
6105-00-241-0869INTERCHANGEABLE
MOTOR-TACHOMETER GENERATOR
08G4AA-AA1-A0

Frequently Asked Questions

What is NSN 3439-00-467-1957?

NSN 3439-00-467-1957 is a Guard,tube, manufactured by Air-Vac Engineering Company Inc, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-467-1957?

NSN 3439-00-467-1957 has 2 cross-referenced part numbers: MG-21 (Air-Vac Engineering Company Inc), MTG9 (Air-Vac Engineering Company Inc).

What NSN replaces 3439-00-467-1957?

There is 1 known substitute for 3439-00-467-1957: 6105-00-241-0869. Verify interchangeability with system specifications before substitution.

What are the specifications of MG-21?

Key specifications for MG-21: End Item Identification: AIR-VAC ENGINEERING MODEL SG200 DESOLDERING TOOL. 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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