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831030 ✓ 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

STEM,OVERLOAD VALVE,STEAM TURBIN. Key specifications include general_characteristics_item_description: CRES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-815-6824, 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
831030
NSN: 4730-00-815-6824
FSC: 4730
CAGE: 32762 — GRINDLEY MANUFACTURING INC. (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCRES
NSN4730-00-815-6824
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 831030 · 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
•
FLOW ANGLE: 45.0 DEGREES
•
NOMINAL THREAD SIZE: 0.125 INCHES ALL ENDS IN
•
LEG LENGTH: 0.810 INCHES NOMINAL SECOND END IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
THREAD SERIES DESIGNATOR: NPT SECOND END
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
FLOW ANGLE45.0 DEGREES
NOMINAL THREAD SIZE0.125 INCHES ALL ENDS IN
LEG LENGTH0.810 INCHES NOMINAL SECOND END IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
THREAD SERIES DESIGNATORNPT SECOND END
THREAD SERIES DESIGNATORANPT FIRST END
LEG LENGTH0.820 INCHES NOMINAL FIRST END IN
MATERIALSTEEL CORROSION RESISTING OVERALL
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
H3,318,174 PIECE 25Interchangeable
interchangeable cross-reference
interchangeable
NH6456 PIECE 25Interchangeable
interchangeable cross-reference
interchangeable
H3,318,174Interchangeable
interchangeable cross-reference
interchangeable
243278Interchangeable
Same NIIN cross-reference
interchangeable
1/8MPTX 1/8MPTSSTHDS45Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 831030?
831030 is a STEM,OVERLOAD VALVE,STEAM TURBIN.
What parts can replace 831030?
There are 5 known substitutes for 831030: H3,318,174 PIECE 25, NH6456 PIECE 25, H3,318,174 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 831030?
831030 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-815-6824. 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