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Technical Data Sheet
261 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The RETAINER,ELECTRON TUBE is a the manufacturer industrial component. Key specifications include handle_type: PISTOL GRIP, drive_end_type: MALE SPINDLE, overall_length: 8.800 INCHES NOMINAL IN, drive_end_shape: SQUARE, torque_capacity: 1200.0 FOOT-POUNDS MAXIMUM FT, special_features: ALUMINUM HOUSING;40 CFM AIR CONSUMPTION AT LOAD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-042-5257, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO MRO_GENERAL 261
NSN: 6625-00-042-5257
FSC: 6625
CAGE: 80145 — LFE INSTRUMENTS A MARK IV CO (USA)
SPECIFICATIONS
handle_typePISTOL GRIP
drive_end_typeMALE SPINDLE
overall_length8.800 INCHES NOMINAL IN
drive_end_shapeSQUARE
torque_capacity1200.0 FOOT-POUNDS MAXIMUM FT
special_featuresALUMINUM HOUSING;40 CFM AIR CONSUMPTION AT LOAD
unable_to_decodeUNABLE TO DECODE
speed_adjustmentsVARIABLE SPEED
drive_surface_size0.750 INCHES NOMINAL IN
operating_pressure90.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
no_load_speed_in_rpm5500.0 NOMINAL
impact_blows_per_minute1000.0
NSN6625-00-042-5257
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER,ELECTRON TUBE TITLE COMPONENT PN 261 MFR RETAINER,ELECTRON TUBE
KEY FEATURES
POINTER COLOR: WHITE SINGLE INDICATOR SINGLE RANGE
SCALE DIVISION QUANTITY: 40 SINGLE INDICATOR SINGLE RANGE
UNABLE TO DECODE: UNABLE TO DECODE
MOVEMENT SUSPENSION METHOD: JEWEL PIVOT BASE
INDICATOR TYPE: DIAL W/POINTER
MOUNTING FACILITY TYPE AND QUANTITY: 4 THREADED STUD(S)
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.219 INCHES MAXIMUM IN
FEATURES PROVIDED: ZERO ADJUSTER
TECHNICAL CHARACTERISTICS (FLIS)
POINTER COLORWHITE SINGLE INDICATOR SINGLE RANGE
SCALE DIVISION QUANTITY40 SINGLE INDICATOR SINGLE RANGE
UNABLE TO DECODEUNABLE TO DECODE
MOVEMENT SUSPENSION METHODJEWEL PIVOT BASE
INDICATOR TYPEDIAL W/POINTER
MOUNTING FACILITY TYPE AND QUANTITY4 THREADED STUD(S)
METER BODY DIAMETER BEHIND MOUNTING FLANGE2.219 INCHES MAXIMUM IN
FEATURES PROVIDEDZERO ADJUSTER
FSC APPLICATION DATATEST SET,ELECT. EQUIP.
NUCLEAR HARDNESS CRITICAL FEATURENONHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
261Upgraded Successor
successor cross-reference
successor
164284-01Upgraded Successor
successor cross-reference
successor
456986-1Interchangeable
interchangeable cross-reference
interchangeable
1800671Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 261?
261 is a RETAINER,ELECTRON TUBE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 261?
There are 4 known substitutes for 261: 261, 164284-01, 456986-1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 261?
261 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-042-5257. This indicates validated use in U.S. government and defense supply chains.
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