PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1387Eyepiece Assembly,optical Instru

Leidos, Inc. Div Cyber and Information Solutions Services · NSN 1240-01-143-3319 · FSC 1240 · No Item Name Available
Verified by PartsTable
NSN 1240-01-143-3319 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-143-3319. Primary manufacturer part number: 1387.
Features
  • Eyepiece Assembly,optical Instru — FSC 1240
  • 2 verified cross-references
  • Primary manufacturer: Leidos, Inc. Div Cyber and Information Solutions Services
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Eyepiece Assembly,optical Instru, cataloged under National Stock Number 1240-01-143-3319, is classified within Federal Supply Class 1240 (No Item Name Available) of the Fire Control Equipment group. The primary manufacturer of record is Leidos, Inc. Div Cyber and Information Solutions Services. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameEyepiece Assembly,optical Instru
FSC / FSG1240 — No Item Name Available (FSG 12)
ManufacturersThe Boeing Company (CAGE 2R708); Leidos, Inc. Div Cyber and Information Solutions Services (CAGE 52326)
Technical Specifications
ParameterValue
NSN1240-01-143-3319
Primary Part Number1387
Item NameEyepiece Assembly,optical Instru
FSC / FSG1240 / 12 — No Item Name Available
ManufacturerLeidos, Inc. Div Cyber and Information Solutions Services
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4730-00-076-279901387 INTERCHANGEABLE
Nozzle,sand Blast
Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
5915-00-368-34874030813-0701 INTERCHANGEABLE
Filter,band Pass
Raytheon Company Dba Raytheon Co
4820-00-603-8668301387-011 INTERCHANGEABLE
Disk,valve
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
5950-00-648-3422715731 INTERCHANGEABLE
Coil,electrical
Lockheed Martin Corporation Div Rms - Mitchel Field
5340-01-242-0583PTS INTERCHANGEABLE
Seal,antipilferage
Parts Unlimited Inc
6695-01-320-98341387 INTERCHANGEABLE
Jewel and Screw Assembly
Aerosonic Llc
7510-01-462-13871387 INTERCHANGEABLE
Binder,loose-Leaf
Safina Office Products, Inc. Dba Safina Office Products Inc
5305-01-558-93611387 INTERCHANGEABLE
Screw,cap,hexagon Head
DP Manufacturing Inc.
4930-01-644-98601387 INTERCHANGEABLE
Dispensing Pump,hand Driven
Lincoln Industrial Corporation Div Lincoln Industrial Corporation
5935-01-696-61521387 INTERCHANGEABLE
Connector,plug,electrical
Adafruit Industries Llc
Cross-Reference Index
Part NumberManufacturer
1387 The Boeing Company (USA)
1387 PRIMARY Leidos, Inc. Div Cyber and Information Solutions Services (USA)
Related Parts
4730-00-076-2799INTERCHANGEABLE
NOZZLE,SAND BLAST
01387
5915-00-368-3487INTERCHANGEABLE
FILTER,BAND PASS
4030813-0701
4820-00-603-8668INTERCHANGEABLE
DISK,VALVE
301387-011
5950-00-648-3422INTERCHANGEABLE
COIL,ELECTRICAL
715731
5340-01-242-0583INTERCHANGEABLE
SEAL,ANTIPILFERAGE
PTS
6695-01-320-9834INTERCHANGEABLE
JEWEL AND SCREW ASSEMBLY
1387
7510-01-462-1387INTERCHANGEABLE
BINDER,LOOSE-LEAF
1387
5305-01-558-9361INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
1387
4930-01-644-9860INTERCHANGEABLE
DISPENSING PUMP,HAND DRIVEN
1387
5935-01-696-6152INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
1387

Frequently Asked Questions

What is NSN 1240-01-143-3319?

NSN 1240-01-143-3319 is a Eyepiece Assembly,optical Instru, manufactured by Leidos, Inc. Div Cyber and Information Solutions Services, classified under FSC 1240 (No Item Name Available). Status: active.

What are the part numbers for NSN 1240-01-143-3319?

NSN 1240-01-143-3319 has 2 cross-referenced part numbers: 1387 (The Boeing Company), 1387 (Leidos, Inc. Div Cyber and Information Solutions Services).

What NSN replaces 1240-01-143-3319?

There are 10 known substitutes for 1240-01-143-3319: 4730-00-076-2799, 5915-00-368-3487, 4820-00-603-8668 and 7 more. Verify interchangeability with system specifications before substitution.

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