PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5B3Retainer,electron Tube

Birtcher Corp · NSN 5960-00-899-7757 · FSC 5960 · No Item Name Available
Verified by PartsTable
NSN 5960-00-899-7757 — this item is cataloged by the U.S. Government under National Stock Number 5960-00-899-7757. Primary manufacturer part number: 5B3.
Features
  • Retainer,electron Tube — FSC 5960
  • Eia Electron Tube Envelope Accommodated: T2X3
  • Material Document and Classification: QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Surface Treatment: CADMIUM
  • Material: COPPER ALLOY 170
  • Distance Between Mounting Facility Centers: 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SECOND CENTER GROUP IN
  • Accommodated Item Securing Device Type: FRICTION FASTENER
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 170 construction
General Description

The Retainer,electron Tube, cataloged under National Stock Number 5960-00-899-7757, is classified within Federal Supply Class 5960 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Birtcher Corp. Government technical data includes 10 verified specifications, 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5960-00-899-7757
Primary Part Number5B3
Item NameRetainer,electron Tube
FSC / FSG5960 / 59 — No Item Name Available
ManufacturerBirtcher Corp
StatusCANCELLED
Eia Electron Tube Envelope AccommodatedT2X3
Material Document and ClassificationQQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Surface TreatmentCADMIUM
MaterialCOPPER ALLOY 170
Distance Between Mounting Facility Centers1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SECOND CENTER GROUP IN
Accommodated Item Securing Device TypeFRICTION FASTENER
Distance Between Mounting Facility Centers0.297 INCHES NOMINAL SINGLE MOUNTING FACILITY FIRST CENTER GROUP IN
Style DesignatorCRADLE WITH BASE
Unthreaded Mounting Hole Diameter0.078 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
2815-00-423-95775B0003 INTERCHANGEABLE
Ring,piston
Caterpillar Inc Div Caterpillar Defense
5950-00-467-1440373289-1 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon Co
5915-00-572-6125395-002-0 INTERCHANGEABLE
Filter,radio Frequency Interfere
Rtp Corp
2520-00-640-37611012818 INTERCHANGEABLE
Cap,dust,propeller Shaft
Sicard a Division of Smi-Snowblast Inc Dba Sicard
1660-00-715-860712818 INTERCHANGEABLE
Parts Kit,valve,ove
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
1560-00-772-189912818 INTERCHANGEABLE
Panel,fuselage Cowl
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
5950-00-954-2297129-126-0152 INTERCHANGEABLE
Reactor
Kearfott Corporation Div Guidance and Navigation Division
5325-01-038-59223205-20-2 INTERCHANGEABLE
Grommet,nonmetallic
Mag Aerospace Industries, Llc Div Safran Cabins
3040-01-105-002110110 INTERCHANGEABLE
Cylinder,actuating,linear
Prince Manufacturing Corporation
6105-01-359-5937 INTERCHANGEABLE
Motor,alternating Current
Cross-Reference Index
Part NumberManufacturer
5B3 Birtcher Corp (USA)
12818 Whittaker Corp Whittaker Electronic Systems Div (USA)
Related Parts
2815-00-423-9577INTERCHANGEABLE
RING,PISTON
5B0003
5950-00-467-1440INTERCHANGEABLE
TRANSFORMER,POWER
373289-1
5915-00-572-6125INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
395-002-0
2520-00-640-3761INTERCHANGEABLE
CAP,DUST,PROPELLER SHAFT
1012818
1660-00-715-8607INTERCHANGEABLE
PARTS KIT,VALVE,OVE
12818
1560-00-772-1899INTERCHANGEABLE
PANEL,FUSELAGE COWL
12818
5950-00-954-2297INTERCHANGEABLE
REACTOR
129-126-0152
5325-01-038-5922INTERCHANGEABLE
GROMMET,NONMETALLIC
3205-20-2
3040-01-105-0021INTERCHANGEABLE
CYLINDER,ACTUATING,LINEAR
10110
6105-01-359-5937INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
9905-01-369-4145INTERCHANGEABLE
PLATE,INSTRUCTION
12818

Frequently Asked Questions

What is NSN 5960-00-899-7757?

NSN 5960-00-899-7757 is a Retainer,electron Tube, manufactured by Birtcher Corp, classified under FSC 5960 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5960-00-899-7757?

NSN 5960-00-899-7757 has 2 cross-referenced part numbers: 5B3 (Birtcher Corp), 12818 (Whittaker Corp Whittaker Electronic Systems Div).

What NSN replaces 5960-00-899-7757?

There are 11 known substitutes for 5960-00-899-7757: 2815-00-423-9577, 5950-00-467-1440, 5915-00-572-6125 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5B3?

Key specifications for 5B3: Eia Electron Tube Envelope Accommodated: T2X3; Material Document and Classification: QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Surface Treatment: CADMIUM. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5960-00-899-7757 still in active supply?

NSN 5960-00-899-7757 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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