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4429K558 ✓ 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 RETAINER,SEMICONDUCTOR DEVICE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, socket_depth: 1.656 INCHES NOMINAL IN, flange_diameter: 7.500 INCHES NOMINAL IN, socket_diameter: 3.130 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 0.750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-178-9713, 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
4429K558
NSN: 4730-01-178-9713
FSC: 4730
CAGE: 0KVE6 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY
socket_depth1.656 INCHES NOMINAL IN
flange_diameter7.500 INCHES NOMINAL IN
socket_diameter3.130 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.750 INCHES NOMINAL IN
bolt_hole_quantity4
bolt_circle_diameter6.000 INCHES NOMINAL IN
flange_section_stylePLAIN FACE, SOCKET NECK
face_seating_surface_conditionGROUND
nominal_pipe_size_for_which_designed3.000 INCHES IN
NSN4730-01-178-9713
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4429K558 · 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
•
SOCKET DIAMETER: 3.130 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
MATERIAL: COPPER ALLOY
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 3.000 INCHES IN
•
FLANGE DIAMETER: 7.500 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 6.000 INCHES NOMINAL IN
•
SOCKET DEPTH: 1.656 INCHES NOMINAL IN
•
FLANGE SECTION STYLE: PLAIN FACE, SOCKET NECK
TECHNICAL CHARACTERISTICS (FLIS)
SOCKET DIAMETER3.130 INCHES NOMINAL IN
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
MATERIALCOPPER ALLOY
NOMINAL PIPE SIZE FOR WHICH DESIGNED3.000 INCHES IN
FLANGE DIAMETER7.500 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER6.000 INCHES NOMINAL IN
SOCKET DEPTH1.656 INCHES NOMINAL IN
FLANGE SECTION STYLEPLAIN FACE, SOCKET NECK
FACE SEATING SURFACE CONDITIONGROUND
BOLT HOLE QUANTITY4
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
8493715-1Interchangeable
interchangeable cross-reference
interchangeable
30022Interchangeable
interchangeable cross-reference
interchangeable
438332-1Interchangeable
interchangeable cross-reference
interchangeable
A-2802Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4429K558?
4429K558 is a RETAINER,SEMICONDUCTOR DEVICE.
What parts can replace 4429K558?
There are 4 known substitutes for 4429K558: 8493715-1, 30022, 438332-1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4429K558?
4429K558 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-178-9713. 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