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Technical Data Sheet
PartsTable / COMPONENT / 129B3-8X1 5-16
129B3-8X1 5-16 ✓ 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 COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: GROOVED BOTH ENDS, nominal_thread_size: 0.250 INCHES ALL ENDS IN, nominal_overall_length: 0.938 INCHES 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 4730-00-407-0566, 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
129B3-8X1 5-16
NSN: 4730-00-407-0566
FSC: 4730
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorGROOVED BOTH ENDS
nominal_thread_size0.250 INCHES ALL ENDS IN
nominal_overall_length0.938 INCHES IN
thread_series_designatorNPT ALL ENDS
furnished_items_and_quantity1 BULKHEAD NUT AND 1 FLAT WASHER
NSN4730-00-407-0566
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 129B3-8X1 5-16 · 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
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS
•
REDUCED PASSAGE NOMINAL INSIDE DIAMETER: 0.562 INCHES CENTER BULKHEAD IN
•
MATERIAL: COPPER ALLOY 360 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE CA360 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OVERALL LENGTH: 1.312 INCHES IN
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDSPLAIN (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.562 INCHES CENTER BULKHEAD IN
MATERIALCOPPER ALLOY 360 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE CA360 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OVERALL LENGTH1.312 INCHES IN
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDSPLAIN (PIPE) ALL ENDS
SPECIAL FEATURES1ST END BULKHEAD 1.000-14 IN. CL 2A,UNS A
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.375 INCHES ALL ENDS0.375 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
9M7357Interchangeable
interchangeable cross-reference
interchangeable
129BInterchangeable
interchangeable cross-reference
interchangeable
129-B-3/8X1-5/16Interchangeable
interchangeable cross-reference
interchangeable
14Z9D4Interchangeable
Same NIIN cross-reference
interchangeable
5029209-092-101Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 129B3-8X1 5-16?
129B3-8X1 5-16 is a COUPLING,PIPE.
What parts can replace 129B3-8X1 5-16?
There are 5 known substitutes for 129B3-8X1 5-16: 9M7357, 129B, 129-B-3/8X1-5/16 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 129B3-8X1 5-16?
129B3-8X1 5-16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-407-0566. 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