PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CLASSIC 14FComparator,optical Projection

Waterbury Farrel Div of Textron Inc Jones and Lamson Unit · NSN 6635-00-401-7871 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-00-401-7871 — this item is cataloged by the U.S. Government under National Stock Number 6635-00-401-7871. Primary manufacturer part number: CLASSIC 14F.
Features
  • Comparator,optical Projection — FSC 6635
  • Material: GLASS
  • Optical Element Quantity: 1
  • Accessory Components and Quantity: 14IN SCREEN 1;LENS X10-X100 1; CHROME PLATED TABLE 30X6 IN 1 IN
  • Optical Element Type: SINGLE LENS
  • Eccentric Construction: NOT PROVIDED
  • 3 verified cross-references
  • Primary manufacturer: Waterbury Farrel Div of Textron Inc Jones and Lamson Unit
Applications
  • Applications requiring Glass construction
General Description

The Comparator,optical Projection, cataloged under National Stock Number 6635-00-401-7871, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Waterbury Farrel Div of Textron Inc Jones and Lamson Unit. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-00-401-7871
Primary Part NumberCLASSIC 14F
Item NameComparator,optical Projection
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerWaterbury Farrel Div of Textron Inc Jones and Lamson Unit
StatusACTIVE
MaterialGLASS
Optical Element Quantity1
Accessory Components and Quantity14IN SCREEN 1;LENS X10-X100 1; CHROME PLATED TABLE 30X6 IN 1 IN
Optical Element TypeSINGLE LENS
Eccentric ConstructionNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-227-3256 INTERCHANGEABLE
Bearing,roller,needle
6130-00-230-70966RS5GH26 INTERCHANGEABLE
Rectifier,metallic
Dean Technology Inc. Dba Cke
6130-00-754-6056PC14 INTERCHANGEABLE
Inverter,power,static
Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company
5999-01-036-9503 INTERCHANGEABLE
Clip,electrical
5935-01-254-9396PC-14 INTERCHANGEABLE
Connector,receptacle,electrical
Kepco, Inc. Dba Kepco Inc Div Kepco Dynatronix
Cross-Reference Index
Part NumberManufacturer
6635-7221-1403 Defense Supply Center Richmond Industrial Plant Equipment /dla/ (USA)
CLASSIC 14F PRIMARY Waterbury Farrel Div of Textron Inc Jones and Lamson Unit (USA)
PC14 Waterbury Farrel Div of Textron Inc Jones and Lamson Unit (USA)
Related Parts
3110-00-227-3256INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
6130-00-230-7096INTERCHANGEABLE
RECTIFIER,METALLIC
6RS5GH26
6130-00-754-6056INTERCHANGEABLE
INVERTER,POWER,STATIC
PC14
5999-01-036-9503INTERCHANGEABLE
CLIP,ELECTRICAL
5935-01-254-9396INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
PC-14

Frequently Asked Questions

What is NSN 6635-00-401-7871?

NSN 6635-00-401-7871 is a Comparator,optical Projection, manufactured by Waterbury Farrel Div of Textron Inc Jones and Lamson Unit, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-00-401-7871?

NSN 6635-00-401-7871 has 3 cross-referenced part numbers: 6635-7221-1403 (Defense Supply Center Richmond Industrial Plant Equipment /dla/), CLASSIC 14F (Waterbury Farrel Div of Textron Inc Jones and Lamson Unit), PC14 (Waterbury Farrel Div of Textron Inc Jones and Lamson Unit).

What NSN replaces 6635-00-401-7871?

There are 5 known substitutes for 6635-00-401-7871: 3110-00-227-3256, 6130-00-230-7096, 6130-00-754-6056 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CLASSIC 14F?

Key specifications for CLASSIC 14F: Material: GLASS; Special Features: DRIVE SYSTEM CONSTANT SPEED HORIZONTAL AND VERTICAL DRIVE SYSTEMS WITH MANUAL OVERRIDE; TUNGSTEN HALOGEN 60 HZ LIGHT SOURCE; QWICK II DIGITAL READ OUT WITH 1 MICRON RESOLUTION GLASS SCALES; 120V,SINGLE PHASE,60HZ V; Optical Element Quantity: 1; Accessory Components and Quantity: 14IN SCREEN 1;LENS X10-X100 1; CHROME PLATED TABLE 30X6 IN 1 IN. 9 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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