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521537-2 — SWITCH SUBASSEMBLY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

521537-2: SWITCH SUBASSEMBLY.

The SWITCH SUBASSEMBLY is a the manufacturer industrial component. Key specifications include overall_length: 3.410 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN, overall_diameter: 2.090 INCHES MINIMUM AND 2.110 INCHES MAXIMUM IN, special_features: WEAPON SYSTEM ESSENTIAL, end_item_identification: CATAPULT / ARRESTING GEAR, component_type_and_quantity: 1 WASHER AND 2 SPACER AND 1 CONTACT AND 1 SCREW, criticality_code_justification: FEAT. This part is cataloged in the U.S.

Government catalog under NSN 5930-01-302-2801, 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
521537-2
NSN: 5930-01-302-2801
FSC: 5930 — Switches
CAGE: 55097 — SHILOH INDUSTRIES INC (USA)
SPECIFICATIONS
overall_length3.410 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN
overall_diameter2.090 INCHES MINIMUM AND 2.110 INCHES MAXIMUM IN
special_featuresWEAPON SYSTEM ESSENTIAL
end_item_identificationCATAPULT / ARRESTING GEAR
component_type_and_quantity1 WASHER AND 2 SPACER AND 1 CONTACT AND 1 SCREW
criticality_code_justificationFEAT
NSN5930-01-302-2801
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH SUBASSEMBLY TITLE COMPONENT PN 521537-2 MFR SWITCH SUBASSEMBLY
KEY FEATURES
•
COMPONENT TYPE AND QUANTITY: 1 WASHER AND 2 SPACER AND 1 CONTACT AND 1 SCREW
•
OVERALL DIAMETER: 2.090 INCHES MINIMUM AND 2.110 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS
COMPONENT TYPE AND QUANTITY1 WASHER AND 2 SPACER AND 1 CONTACT AND 1 SCREW
OVERALL DIAMETER2.090 INCHES MINIMUM AND 2.110 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONFEAT
OVERALL LENGTH3.410 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
END ITEM IDENTIFICATIONCATAPULT / ARRESTING GEAR
OTHER ITEMS IN FSC 5930 — Switches
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5930-00-000-0117 5930-00-001-1407 5930-00-001-1890 5930-00-001-2571 5930-00-001-2575 5930-00-001-2580 5930-00-001-2608 5930-00-001-2609
SUBSTITUTES & CROSS-REFERENCES 1
PTMW27Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 521537-2?
521537-2 is a SWITCH SUBASSEMBLY.
What parts can replace 521537-2?
There is 1 known substitute for 521537-2: PTMW27. Substitute compatibility should be verified for your specific system.
What is the NSN for 521537-2?
521537-2 is cataloged in the U.S. Government catalog under NSN 5930-01-302-2801. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.