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Technical Data Sheet
PartsTable / COMPONENT / G429-27
G429-27 ✓ 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 MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: STEEL, thread_size: 2.250-16, thread_class: 2B, overall_length: 0.625 INCHES NOMINAL IN, style_designator: HEXAGON, INTERNAL THREAD, SHOULDERED, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-524-8490, 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
G429-27
NSN: 4730-00-524-8490
FSC: 4730
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL
thread_size2.250-16
thread_class2B
overall_length0.625 INCHES NOMINAL IN
style_designatorHEXAGON, INTERNAL THREAD, SHOULDERED
thread_directionRIGHT-HAND
surface_treatmentCADMIUM
length_to_shoulder0.514 INCHES NOMINAL IN
width_across_flats2.437 INCHES NOMINAL IN
screw_thread_locationINTERNAL
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter1.700 INCHES NOMINAL IN
NSN4730-00-524-8490
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: G429-27 · 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
•
THREAD SIZE: 2.250-16
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SCREW THREAD SERIES DESIGNATOR: UN
•
SMALLEST INSIDE DIAMETER: 1.700 INCHES NOMINAL IN
•
SCREW THREAD LOCATION: INTERNAL
•
LENGTH TO SHOULDER: 0.514 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 2.437 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.625 INCHES NOMINAL IN
THREAD SIZE2.250-16
CASEHARDENING INDICATORNOT CASEHARDENED
SCREW THREAD SERIES DESIGNATORUN
SMALLEST INSIDE DIAMETER1.700 INCHES NOMINAL IN
SCREW THREAD LOCATIONINTERNAL
LENGTH TO SHOULDER0.514 INCHES NOMINAL IN
WIDTH ACROSS FLATS2.437 INCHES NOMINAL IN
MAJOR UNTHREADED OUTSIDE DIAMETER2.437 INCHES NOMINAL IN
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
856071Interchangeable
interchangeable cross-reference
interchangeable
529XInterchangeable
interchangeable cross-reference
interchangeable
0604396Interchangeable
interchangeable cross-reference
interchangeable
5B4106Interchangeable
interchangeable cross-reference
interchangeable
MS16842-Z1-5Interchangeable
interchangeable cross-reference
interchangeable
35852BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G429-27?
G429-27 is a MICROCIRCUIT,DIGITAL.
What parts can replace G429-27?
There are 11 known substitutes for G429-27: 856071, 529X, 0604396 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G429-27?
G429-27 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-524-8490. 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