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Technical Data Sheet
PartsTable / COMPONENT / AA59616CQQBCB
AA59616CQQBCB ✓ 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 LOCKNUT,PIPE is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, nut_style: PIPE LOCKNUT, nut_height: 0.250 INCHES NOMINAL IN, thread_series: NPT, thread_direction: RIGHT-HAND, surface_treatment: ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-323-3216, 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
AA59616CQQBCB
NSN: 4730-01-323-3216
FSC: 4730
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialIRON OVERALL
nut_stylePIPE LOCKNUT
nut_height0.250 INCHES NOMINAL IN
thread_seriesNPT
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats0.840 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
packing_recess_depth0.060 INCHES NOMINAL IN
packing_recess_diameter0.660 INCHES NOMINAL IN
thread_quantity_per_inch18
NSN4730-01-323-3216
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AA59616CQQBCB · 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 DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.840 INCHES NOMINAL IN
•
MATERIAL: IRON OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
NUT STYLE: PIPE LOCKNUT
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
PACKING RECESS DIAMETER: 0.660 INCHES NOMINAL IN
•
THREAD SERIES: NPT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.840 INCHES NOMINAL IN
MATERIALIRON OVERALL
SURFACE TREATMENTZINC OVERALL
NUT STYLEPIPE LOCKNUT
NOMINAL THREAD SIZE0.250 INCHES IN
PACKING RECESS DIAMETER0.660 INCHES NOMINAL IN
THREAD SERIESNPT
THREAD QUANTITY PER INCH18
NUT HEIGHT0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
A-A-59616AInterchangeable
interchangeable cross-reference
interchangeable
444878Interchangeable
interchangeable cross-reference
interchangeable
IPD1B5174Interchangeable
interchangeable cross-reference
interchangeable
LA-631-4Interchangeable
interchangeable cross-reference
interchangeable
W-7814-4Interchangeable
interchangeable cross-reference
interchangeable
A-A-59616Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA59616CQQBCB?
AA59616CQQBCB is a LOCKNUT,PIPE.
What parts can replace AA59616CQQBCB?
There are 10 known substitutes for AA59616CQQBCB: A-A-59616A, 444878, IPD1B5174 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AA59616CQQBCB?
AA59616CQQBCB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-323-3216. 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