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D2677 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include height: 0.562 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, shank_length: 0.250 INCHES NOMINAL IN, style_designator: STRAIGHT, W/BALL CHECK, surface_treatment: NICKEL OVERALL, width_across_flats: 0.038 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 4730-00-174-4521, 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
D2677
NSN: 4730-00-174-4521
FSC: 4730
CAGE: 59690 — KOEHRING CO LORAIN DIV (USA)
SPECIFICATIONS
height0.562 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
shank_length0.250 INCHES NOMINAL IN
style_designatorSTRAIGHT, W/BALL CHECK
surface_treatmentNICKEL OVERALL
width_across_flats0.038 INCHES NOMINAL IN
nominal_thread_size0.125 INCHES IN
end_item_identificationINTENSIFIER
assembly_clearance_radius0.266 INCHES NOMINAL IN
screw_thread_series_designatorNPT
general_characteristics_item_descriptionMATERIAL ALUMINUM; 1 1/3 QUART CAPACITY
NSN4730-00-174-4521
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: D2677 · 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
•
SCREW THREAD SERIES DESIGNATOR: NPT
•
WIDTH ACROSS FLATS: 0.038 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
ASSEMBLY CLEARANCE RADIUS: 0.266 INCHES NOMINAL IN
•
HEIGHT: 0.562 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
SURFACE TREATMENT: NICKEL OVERALL
•
STYLE DESIGNATOR: STRAIGHT, W/BALL CHECK
TECHNICAL CHARACTERISTICS (FLIS)
SCREW THREAD SERIES DESIGNATORNPT
WIDTH ACROSS FLATS0.038 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.125 INCHES IN
ASSEMBLY CLEARANCE RADIUS0.266 INCHES NOMINAL IN
HEIGHT0.562 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTNICKEL OVERALL
STYLE DESIGNATORSTRAIGHT, W/BALL CHECK
SHANK LENGTH0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
D-2677Interchangeable
interchangeable cross-reference
interchangeable
F-3432Interchangeable
interchangeable cross-reference
interchangeable
2677-8Interchangeable
interchangeable cross-reference
interchangeable
D-2677 REV G ITEM 8Interchangeable
interchangeable cross-reference
interchangeable
54SIZE3Interchangeable
Same NIIN cross-reference
interchangeable
A26726Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D2677?
D2677 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace D2677?
There are 9 known substitutes for D2677: D-2677, F-3432, 2677-8 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D2677?
D2677 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-174-4521. 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