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PartsTable / COMPONENT / 1551AS261-1CP
1551AS261-1CP ✓ 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 ADAPTER BUSHING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, thickness: 0.250 INCHES NOMINAL IN, overall_length: 0.940 INCHES NOMINAL IN, special_features: INCLUDES BULKHEAD NUT, width_across_flats: 1.120 INCHES NOMINAL IN, male_end_thread_size: 3/4-16. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-302-6688, 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
1551AS261-1CP
NSN: 4730-01-302-6688
FSC: 4730
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thickness0.250 INCHES NOMINAL IN
overall_length0.940 INCHES NOMINAL IN
special_featuresINCLUDES BULKHEAD NUT
width_across_flats1.120 INCHES NOMINAL IN
male_end_thread_size3/4-16
male_end_thread_class2A A
female_end_thread_size1/4-18
male_end_thread_length0.687 INCHES NOMINAL IN
end_item_identification3655-01-281-7747
female_end_thread_class2B
female_end_thread_length0.940 INCHES NOMINAL IN
NSN4730-01-302-6688
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1551AS261-1CP · 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
•
MATERIAL: COPPER ALLOY
•
FEMALE END THREAD DIRECTION: RIGHT-HAND
•
WRENCHING FACILITY SHAPE: HEXAGON
•
THICKNESS: 0.250 INCHES NOMINAL IN
•
FEMALE END THREAD SIZE: 1/4-18
•
WIDTH ACROSS FLATS: 1.120 INCHES NOMINAL IN
•
FEMALE END THREAD CLASS: 2B
•
FEMALE END SCREW THREAD SERIES DESIGNATOR: NPT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY
FEMALE END THREAD DIRECTIONRIGHT-HAND
WRENCHING FACILITY SHAPEHEXAGON
THICKNESS0.250 INCHES NOMINAL IN
FEMALE END THREAD SIZE1/4-18
WIDTH ACROSS FLATS1.120 INCHES NOMINAL IN
FEMALE END THREAD CLASS2B
FEMALE END SCREW THREAD SERIES DESIGNATORNPT
MALE END THREAD LENGTH0.687 INCHES NOMINAL IN
MALE END SCREW THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
06056Interchangeable
interchangeable cross-reference
interchangeable
9M7357Interchangeable
interchangeable cross-reference
interchangeable
12339984Interchangeable
interchangeable cross-reference
interchangeable
22597Interchangeable
interchangeable cross-reference
interchangeable
502-1133Interchangeable
interchangeable cross-reference
interchangeable
HW10117Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1551AS261-1CP?
1551AS261-1CP is a ADAPTER BUSHING.
What parts can replace 1551AS261-1CP?
There are 14 known substitutes for 1551AS261-1CP: 06056, 9M7357, 12339984 and 11 more. Substitute compatibility should be verified for your specific system.
Is 1551AS261-1CP still available?
1551AS261-1CP 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