PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21174Roller,tape Guide

Drs C3 & Aviation Company Dba Drs Data & Imaging Systems · NSN 3120-00-432-4075 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-432-4075 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-432-4075. Primary manufacturer part number: 21174.
Features
  • Roller,tape Guide — FSC 3120
  • General Characteristics Item Description: STEEL QQ-S-764 TYPE 303 O/A,0.5000 IN. MIN 0.5002 IN. MAX ID,0.6280 OD,0.5490 IN. MIN 0.5510 IN. MAX O/A LG,ID AND OD SURFACES 16 MICROINCHES AA IN
  • 2 verified cross-references
  • Primary manufacturer: Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
Applications
  • Industrial machinery bearing replacement
  • Motor and pump shaft assemblies
  • HVAC blower and fan assemblies
General Description

The Roller,tape Guide, cataloged under National Stock Number 3120-00-432-4075, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Drs C3 & Aviation Company Dba Drs Data & Imaging Systems. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-432-4075
Primary Part Number21174
Item NameRoller,tape Guide
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerDrs C3 & Aviation Company Dba Drs Data & Imaging Systems
StatusACTIVE
General Characteristics Item DescriptionSTEEL QQ-S-764 TYPE 303 O/A,0.5000 IN. MIN 0.5002 IN. MAX ID,0.6280 OD,0.5490 IN. MIN 0.5510 IN. MAX O/A LG,ID AND OD SURFACES 16 MICROINCHES AA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4720-00-202-6716 INTERCHANGEABLE
Hose Assembly,nonmetallic
4320-00-218-2310134 INTERCHANGEABLE
Impeller,pump,centrifugal
Industrial Technologies and Services Llc
2990-00-248-427121174 INTERCHANGEABLE
Muffler,exhaust
Walker Mfg Co
4730-00-254-62151102-9 INTERCHANGEABLE
Elbow,pipe to Tube
Barnes Group Inc. Dba Barnes Distribution
5310-00-431-728121174 INTERCHANGEABLE
Nut,plain,hexagon
Dresser, Llc
5950-01-074-393821174 INTERCHANGEABLE
Coil,radio Frequency
Vanguard Electronics, Llc
5998-01-097-850921174 INTERCHANGEABLE
Circuit Card Assembly
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5962-01-149-5443 INTERCHANGEABLE
Microcircuit,memory
5998-01-370-814921174 INTERCHANGEABLE
Circuit Card Assembly
Anritsu Instruments Company Div Mbu
Cross-Reference Index
Part NumberManufacturer
21174-00 L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West (USA)
21174 PRIMARY Drs C3 & Aviation Company Dba Drs Data & Imaging Systems (USA)
Related Parts
4720-00-202-6716INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4320-00-218-2310INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
134
2990-00-248-4271INTERCHANGEABLE
MUFFLER,EXHAUST
21174
4730-00-254-6215INTERCHANGEABLE
ELBOW,PIPE TO TUBE
1102-9
5310-00-431-7281INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21174
5950-01-074-3938INTERCHANGEABLE
COIL,RADIO FREQUENCY
21174
5998-01-097-8509INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21174
5962-01-149-5443INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5998-01-370-8149INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21174

Frequently Asked Questions

What is NSN 3120-00-432-4075?

NSN 3120-00-432-4075 is a Roller,tape Guide, manufactured by Drs C3 & Aviation Company Dba Drs Data & Imaging Systems, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-432-4075?

NSN 3120-00-432-4075 has 2 cross-referenced part numbers: 21174-00 (L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West), 21174 (Drs C3 & Aviation Company Dba Drs Data & Imaging Systems).

What NSN replaces 3120-00-432-4075?

There are 9 known substitutes for 3120-00-432-4075: 4720-00-202-6716, 4320-00-218-2310, 2990-00-248-4271 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21174?

Key specifications for 21174: General Characteristics Item Description: STEEL QQ-S-764 TYPE 303 O/A,0.5000 IN. MIN 0.5002 IN. MAX ID,0.6280 OD,0.5490 IN. MIN 0.5510 IN. MAX O/A LG,ID AND OD SURFACES 16 MICROINCHES AA IN. 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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