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5521-400 — INDICATOR,FAULT LOCATING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

5521-400: INDICATOR,FAULT LOCATING.

The INDICATOR,FAULT LOCATING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 922 OVERALL, seat_type: GASKET, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET (PIPE) ALL ENDS, style_designator: UNTHREADED, coupling_flange_shape: HEXAGON. This part is cataloged in the U.S.

Government catalog under NSN 4510-00-922-0229, 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
5521-400
NSN: 4510-00-922-0229
NIINs: 009220229, 014585737
FSC: 4510 — Plumbing Fixtures and Accessories
CAGE: 81179 — WALLACE-MURRAY CORP ELJER PLUMBINGWARE DIV VITREOUS CHINA PLANT (USA)
SPECIFICATIONS
materialCOPPER ALLOY 922 OVERALL
seat_typeGASKET
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET (PIPE) ALL ENDS
style_designatorUNTHREADED
coupling_flange_shapeHEXAGON
nominal_overall_length3.468 INCHES IN
nominal_pipe_size_accommodated1.500 INCHES ALL ENDS IN
NSN4510-00-922-0229
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INDICATOR,FAULT LOCATING TITLE COMPONENT PN 5521-400 MFR INDICATOR,FAULT LOCATI
SUBSTITUTES & CROSS-REFERENCES 10
C-1005BReference document
Same NSN cross-reference
Reference document — Secondary reference
6038ARReference document
Same NSN cross-reference
Reference document — Secondary reference
04-00631-AReference document
Same NSN cross-reference
Reference document — Secondary reference
631-RS-AReference document
Same NSN cross-reference
Reference document — Secondary reference
555-1110Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
K-11800Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5521-400?
5521-400 is a INDICATOR,FAULT LOCATING.
What parts can replace 5521-400?
There are 10 known substitutes for 5521-400: C-1005B, 6038AR, 04-00631-A and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5521-400?
5521-400 is cataloged in the U.S. Government catalog under NSN 4510-00-922-0229. 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.