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301SK179 ✓ 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

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include angle: 90.0 DEGREES, height: 1.062 INCHES NOMINAL IN, material: STEEL OVERALL, special_features: 0.312 IN. THD LG,SURFACE LOCATED BALL CHECK VALVE; WEAPON SYSTEM ESSENTIAL; END ITEM:THE F-15 AND F-4 AIRCRAFT IN, style_designator: ANGLE, surface_treatment: ZINC OVERALL.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-844-8635, 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
301SK179
NSN: 4730-00-844-8635
FSC: 4730
CAGE: 77237 — DANA OFF HIGHWAY PRODUCTS, LLC (USA)
SPECIFICATIONS
angle90.0 DEGREES
height1.062 INCHES NOMINAL IN
materialSTEEL OVERALL
special_features0.312 IN. THD LG,SURFACE LOCATED BALL CHECK VALVE; WEAPON SYSTEM ESSENTIAL; END ITEM:THE F-15 AND F-4 AIRCRAFT IN
style_designatorANGLE
surface_treatmentZINC OVERALL
nominal_thread_size0.125 INCHES IN
thread_quantity_per_inch27
assembly_clearance_radius1.000 INCHES NOMINAL IN
criticality_code_justificationFEAT
screw_thread_series_designatorNPTF
NSN4730-00-844-8635
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 301SK179 · 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
•
HEIGHT: 1.062 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
THREAD QUANTITY PER INCH: 27
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
ASSEMBLY CLEARANCE RADIUS: 1.000 INCHES NOMINAL IN
•
ANGLE: 90.0 DEGREES
•
SCREW THREAD SERIES DESIGNATOR: NPTF
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES0.312 IN. THD LG,SURFACE LOCATED BALL CHECK VALVE; WEAPON SYSTEM ESSENTIAL; END ITEM:THE F-15 AND F-4 AIRCRAFT IN
HEIGHT1.062 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONFEAT
THREAD QUANTITY PER INCH27
NOMINAL THREAD SIZE0.125 INCHES IN
ASSEMBLY CLEARANCE RADIUS1.000 INCHES NOMINAL IN
ANGLE90.0 DEGREES
SCREW THREAD SERIES DESIGNATORNPTF
STYLE DESIGNATORANGLE
SURFACE TREATMENTZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
A358Interchangeable
interchangeable cross-reference
interchangeable
9-350008Interchangeable
interchangeable cross-reference
interchangeable
A684Interchangeable
interchangeable cross-reference
interchangeable
ST7M298Interchangeable
interchangeable cross-reference
interchangeable
P12807Interchangeable
interchangeable cross-reference
interchangeable
ST7M298-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 301SK179?
301SK179 is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace 301SK179?
There are 14 known substitutes for 301SK179: A358, 9-350008, A684 and 11 more. Substitute compatibility should be verified for your specific system.
Is 301SK179 still available?
301SK179 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026