STC 4251 — MASK,CHEMICAL-BIOLOGICAL

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

STC 4251: MASK,CHEMICAL-BIOLOGICAL.

The MASK,CHEMICAL-BIOLOGICAL is a the manufacturer industrial component. Key specifications include filter_type: FILTER ELEMENT, face_cover_type: MUZZLE, special_features: FOR GASES AND ORGANIC VAPORTS, FILTERS PARTICULATES, part_name_assigned_by_controlling_agency: PAINT SPRAY RESPIRATOR. This part is cataloged in the U.S.

Government catalog under NSN 4240-01-692-5928, 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

STC 4251

NSN: 4240-01-692-5928
FSC: 4240 — Safety and Rescue Equipment
CAGE: AS936 — STC S.R.L UNIPERSONALE (ITA)

SPECIFICATIONS

filter_type	FILTER ELEMENT
face_cover_type	MUZZLE
special_features	FOR GASES AND ORGANIC VAPORTS, FILTERS PARTICULATES
part_name_assigned_by_controlling_agency	PAINT SPRAY RESPIRATOR
NSN	4240-01-692-5928

COMPONENT DIAGRAM

KEY FEATURES

•

FILTER TYPE: FILTER ELEMENT

•

FACE COVER TYPE: MUZZLE

TECHNICAL CHARACTERISTICS

FILTER TYPE	FILTER ELEMENT
FACE COVER TYPE	MUZZLE
SPECIAL FEATURES	FOR GASES AND ORGANIC VAPORTS, FILTERS PARTICULATES
PART NAME ASSIGNED BY CONTROLLING AGENCY	PAINT SPRAY RESPIRATOR

SUBSTITUTES & CROSS-REFERENCES 1

4251Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is STC 4251?

STC 4251 is a MASK,CHEMICAL-BIOLOGICAL.

What parts can replace STC 4251?

There is 1 known substitute for STC 4251: 4251. Substitute compatibility should be verified for your specific system.

What is the NSN for STC 4251?

STC 4251 is cataloged in the U.S. Government catalog under NSN 4240-01-692-5928. This indicates validated use in U.S. government and defense supply chains.

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STC 4251 — MASK,CHEMICAL-BIOLOGICAL

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