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458173 — HARNESS,HEAD

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

458173: HARNESS,HEAD.

The HARNESS,HEAD is a the manufacturer industrial component. Key specifications include special_features: SOLE SOURCE REQUIRED BY STATUTE 6.302, end_item_identification: ULTRA-TWIN RESPIRATOR, MINE SAFETY APPLIANCES COMPANY. This part is cataloged in the U.S.

Government catalog under NSN 4240-01-178-4434, 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
458173
NSN: 4240-01-178-4434
FSC: 4240 — Safety and Rescue Equipment
CAGE: 55799 — MINE SAFETY APPLIANCES COMPANY (USA)
SPECIFICATIONS
special_featuresSOLE SOURCE REQUIRED BY STATUTE 6.302
end_item_identificationULTRA-TWIN RESPIRATOR, MINE SAFETY APPLIANCES COMPANY
NSN4240-01-178-4434
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HARNESS,HEAD TITLE COMPONENT PN 458173 MFR HARNESS,HEAD
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSOLE SOURCE REQUIRED BY STATUTE 6.302
END ITEM IDENTIFICATIONULTRA-TWIN RESPIRATOR, MINE SAFETY APPLIANCES COMPANY
OTHER ITEMS IN FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515 4240-00-001-2684 4240-00-006-0022 4240-00-007-4576 4240-00-007-8182 4240-00-007-8183 4240-00-007-8184 4240-00-007-8185
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 458173?
458173 is a HARNESS,HEAD.
What is the NSN for 458173?
458173 is cataloged in the U.S. Government catalog under NSN 4240-01-178-4434. 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.