PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

N521Socket,plug-in Electronic Compon

Name: N521
SKU: 5935-00-557-4410

Mercury Mfg Corp · NSN 5935-00-557-4410 · FSC 5935 · No Item Name Available

Verified by PartsTable

NSN 5935-00-557-4410 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-557-4410. Primary manufacturer part number: N521.

5935-00-557-4410 — No Item Name Available illustration

Features

Socket,plug-in Electronic Compon — FSC 5935
Accommodated Contact Quantity: 5
Terminal Type and Quantity: 5 TAB, SOLDER LUG
Material: PLASTIC BODY
Material: COPPER ALLOY CONTACT
Specific Equipment Accommodated: ELECTRON TUBE
Mounting Hole Diameter: 0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
Mounting Hole Style: ROUND, W/TWO MOUNTING HOLES

Applications

Applications requiring Plastic Body construction

General Description

The Socket,plug-in Electronic Compon, cataloged under National Stock Number 5935-00-557-4410, is classified within Federal Supply Class 5935 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Mercury Mfg Corp. Government technical data includes 13 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications

Parameter	Value
NSN	5935-00-557-4410
Primary Part Number	N521
Item Name	Socket,plug-in Electronic Compon
FSC / FSG	5935 / 59 — No Item Name Available
Manufacturer	Mercury Mfg Corp
Status	CANCELLED
Accommodated Contact Quantity	5
Terminal Type and Quantity	5 TAB, SOLDER LUG
Material	PLASTIC BODY
Material	COPPER ALLOY CONTACT
Specific Equipment Accommodated	ELECTRON TUBE
Mounting Hole Diameter	0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
Mounting Hole Style	ROUND, W/TWO MOUNTING HOLES
Mounting Method	BODY THROUGH HOLE
Polarization Type	CONTACT POSITION
Body Mounting Hole Accommodation Diameter	1.109 INCHES NOMINAL IN
Distance Between Mounting Facility Centers	1.500 INCHES NOMINAL IN
Mounting Type for Which Designed	CHASSIS
Fabrication Method	MOLDED

Lifecycle & Compliance

Acquisition Status	CANCELLED
HAZMAT	No

⇄ Verified Substitutes 12

5310-00-167-1344AN315-4R INTERCHANGEABLE

Nut,plain,hexagon

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

4730-00-188-3513SPP72-0003 INTERCHANGEABLE

Plug,pipe

Ward Leonard Ct Llc

1560-00-210-931611523 INTERCHANGEABLE

Fairing Assembly,wi

Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company

4820-00-223-453911523 INTERCHANGEABLE

Valve,relief,pressure and Temper

G.s. Blodgett, Llc Div Blodgett

5340-00-392-7816SM-B-157288 INTERCHANGEABLE

Plate,mending

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir

5360-00-485-590311523 INTERCHANGEABLE

Spring,helical,compression

Triumph Thermal Systems - Maryland, Inc.

5935-00-496-9385 INTERCHANGEABLE

Connector,plug,electrical

4730-00-541-077111523 INTERCHANGEABLE

Adapter,straight,pipe to Tube

Mission Systems Orchard Park Inc

4210-00-573-9232CS4210-SR-0700 INTERCHANGEABLE

Carriage Assembly,compressor

Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)

4940-00-640-3987 INTERCHANGEABLE

Filling Machine,rotary Brush

Cross-Reference Index

Part Number	Manufacturer
N521	Mercury Mfg Corp (USA)
11523	Cinch Connectivity Solutions Inc. (USA)
54A11523	Cinch Connectivity Solutions Inc. (USA)

Related Parts

5310-00-167-1344INTERCHANGEABLE

NUT,PLAIN,HEXAGON

AN315-4R

4730-00-188-3513INTERCHANGEABLE

PLUG,PIPE

SPP72-0003

1560-00-210-9316INTERCHANGEABLE

FAIRING ASSEMBLY,WI

11523

4820-00-223-4539INTERCHANGEABLE

VALVE,RELIEF,PRESSURE AND TEMPER

11523

5340-00-392-7816INTERCHANGEABLE

PLATE,MENDING

SM-B-157288

5360-00-485-5903INTERCHANGEABLE

SPRING,HELICAL,COMPRESSION

11523

5935-00-496-9385INTERCHANGEABLE

CONNECTOR,PLUG,ELECTRICAL

4730-00-541-0771INTERCHANGEABLE

ADAPTER,STRAIGHT,PIPE TO TUBE

11523

4210-00-573-9232INTERCHANGEABLE

CARRIAGE ASSEMBLY,COMPRESSOR

CS4210-SR-0700

4940-00-640-3987INTERCHANGEABLE

FILLING MACHINE,ROTARY BRUSH

4935-00-841-6425INTERCHANGEABLE

BOARD ASSEMBLY

11523

9340-00-962-0483INTERCHANGEABLE

GLASS,LAMINATED

10187311

Frequently Asked Questions

What is NSN 5935-00-557-4410?

NSN 5935-00-557-4410 is a Socket,plug-in Electronic Compon, manufactured by Mercury Mfg Corp, classified under FSC 5935 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5935-00-557-4410?

NSN 5935-00-557-4410 has 3 cross-referenced part numbers: N521 (Mercury Mfg Corp), 11523 (Cinch Connectivity Solutions Inc.), 54A11523 (Cinch Connectivity Solutions Inc.).

What NSN replaces 5935-00-557-4410?

There are 12 known substitutes for 5935-00-557-4410: 5310-00-167-1344, 4730-00-188-3513, 1560-00-210-9316 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N521?

Key specifications for N521: Accommodated Contact Quantity: 5; Terminal Type and Quantity: 5 TAB, SOLDER LUG; Material: PLASTIC BODY; Material: COPPER ALLOY CONTACT. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5935-00-557-4410 still in active supply?

NSN 5935-00-557-4410 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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