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499021 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The HOLDER,VALVE STEM SPRING is a the manufacturer industrial component. Key specifications include width: 42.000 INCHES NOMINAL IN, length: 100.000 FEET NOMINAL FT, base_color: WHITE, usage_form: ROLL, specific_use: PROJECTION PRINTING, emulsion_type: BLACK AND WHITE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-010-8058, 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
499021
NSN: 4730-01-010-8058
FSC: 4730
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
width42.000 INCHES NOMINAL IN
length100.000 FEET NOMINAL FT
base_colorWHITE
usage_formROLL
specific_usePROJECTION PRINTING
emulsion_typeBLACK AND WHITE
contrast_ratingHIGH
reproduction_typePRINT
surface_conditionSMOOTH
emulsion_sensitivityBLUE SENSITIVE
NSN4730-01-010-8058
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 499021 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CRES QQ-S-763 CL 410,COND A
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONTERRY CO STEAM TURBINE TYPE ZSWN
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCRES QQ-S-763 CL 410,COND A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
VARIABLE CONTRAST PAPERInterchangeable
interchangeable cross-reference
interchangeable
499021Interchangeable
interchangeable cross-reference
interchangeable
7-300-000381Interchangeable
interchangeable cross-reference
interchangeable
PLH7814PC104Interchangeable
Same NIIN cross-reference
interchangeable
H-7814Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 499021?
499021 is a HOLDER,VALVE STEM SPRING.
What parts can replace 499021?
There are 5 known substitutes for 499021: VARIABLE CONTRAST PAPER, 499021, 7-300-000381 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 499021?
499021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-010-8058. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026