PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

400-554Raf Tool Boom

Lockheed Martin Corporation Div Rotary and Mission Systems · NSN 4920-01-494-0681 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-01-494-0681 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-494-0681. Primary manufacturer part number: 400-554.
Features
  • Raf Tool Boom — FSC 4920
  • 1 verified cross-reference
  • Primary manufacturer: Lockheed Martin Corporation Div Rotary and Mission Systems
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Raf Tool Boom, cataloged under National Stock Number 4920-01-494-0681, 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 Lockheed Martin Corporation Div Rotary and Mission Systems. This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN4920-01-494-0681
Primary Part Number400-554
Item NameRaf Tool Boom
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rotary and Mission Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5961-00-972-2893 INTERCHANGEABLE
Semiconductor Device,photo
5307-01-057-92875202-275 INTERCHANGEABLE
Stud,ball
Lucent Technologies Inc Corporate Headquarters
4820-01-341-426640055-4 PART 40055-408 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-397-7096 INTERCHANGEABLE
Valve,regulating,temperature
4820-01-423-198440055-412 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-424-987040055-411 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-500-347940055-413 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
6685-01-686-951950146-28 INTERCHANGEABLE
Regulator,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-687-382340055-419 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
400-554 PRIMARY Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
Related Parts
5961-00-972-2893INTERCHANGEABLE
SEMICONDUCTOR DEVICE,PHOTO
5307-01-057-9287INTERCHANGEABLE
STUD,BALL
5202-275
4820-01-341-4266INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40055-4 PART 40055-408
4820-01-397-7096INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
4820-01-423-1984INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40055-412
4820-01-424-9870INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40055-411
4820-01-500-3479INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40055-413
6685-01-686-9519INTERCHANGEABLE
REGULATOR,TEMPERATURE
50146-28
4820-01-687-3823INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40055-419

Frequently Asked Questions

What is NSN 4920-01-494-0681?

NSN 4920-01-494-0681 is a Raf Tool Boom, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-01-494-0681?

NSN 4920-01-494-0681 has 1 cross-referenced part number: 400-554 (Lockheed Martin Corporation Div Rotary and Mission Systems).

What NSN replaces 4920-01-494-0681?

There are 9 known substitutes for 4920-01-494-0681: 5961-00-972-2893, 5307-01-057-9287, 4820-01-341-4266 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 400-554?

Key specifications for 400-554: Special Features: T.O. NE TARGET-2, FIG 5-1; SANTA BARBARE INFRARED INC,; End Item Identification: TARGETING SET; 717456300-009 OR 717456300-019. 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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