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74070 ✓ 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 ENGINE BLOCK ASSEMBLY,DIESEL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, point_type: CONVENTIONAL, point_angle: 118.0 DEGREES NOMINAL, shank_style: STANDARD TAPER W/TANG, flute_length: 6.875 INCHES NOMINAL IN, overall_length: 12.500 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 4730-00-147-0999, 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
74070
NSN: 4730-00-147-0999
FSC: 4730
CAGE: 80254 — TEXTRON LYCOMING INC WILLIAMSPORT PLANT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
point_typeCONVENTIONAL
point_angle118.0 DEGREES NOMINAL
shank_styleSTANDARD TAPER W/TANG
flute_length6.875 INCHES NOMINAL IN
flute_quantity2
overall_length12.500 INCHES NOMINAL IN
special_featuresTAPER SHANK LG; FRACTIONAL SIZE 1-3/32
cutting_end_styleGENERAL PURPOSE
nominal_cutting_diameter1.0938 INCHES IN
cutting_rotation_directionRIGHT-HAND
specification/standard_data05047-ASME B94.11M PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN4730-00-147-0999
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 74070 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
29383Interchangeable
interchangeable cross-reference
interchangeable
53170Interchangeable
interchangeable cross-reference
interchangeable
C12261Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 74070?
74070 is a ENGINE BLOCK ASSEMBLY,DIESEL.
What parts can replace 74070?
There are 3 known substitutes for 74070: 29383, 53170, C12261. Substitute compatibility should be verified for your specific system.
What is the NSN for 74070?
74070 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-147-0999. 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