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Technical Data Sheet
PartsTable / COMPONENT / B687R-1CP
B687R-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 RESISTOR,FIXED,WIRE WOUND is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: CLOSE, nominal_thread_size: 0.125 INCHES ALL ENDS IN, nominal_overall_length: 0.750 INCHES IN, thread_series_designator: NPT ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-050-1989, 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
B687R-1CP
NSN: 4730-00-050-1989
FSC: 4730
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorCLOSE
nominal_thread_size0.125 INCHES ALL ENDS IN
nominal_overall_length0.750 INCHES IN
thread_series_designatorNPT ALL ENDS
nondefinitive_spec/std_data2 TYPE
NSN4730-00-050-1989
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B687R-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
•
STYLE DESIGNATOR: CLOSE
•
NOMINAL THREAD SIZE: 0.125 INCHES ALL ENDS IN
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE
•
NOMINAL OVERALL LENGTH: 0.750 INCHES IN
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCLOSE
NOMINAL THREAD SIZE0.125 INCHES ALL ENDS IN
NONDEFINITIVE SPEC/STD DATA2 TYPE
NOMINAL OVERALL LENGTH0.750 INCHES IN
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
MS51846-99Interchangeable
interchangeable cross-reference
interchangeable
765260-025Interchangeable
interchangeable cross-reference
interchangeable
B687Interchangeable
interchangeable cross-reference
interchangeable
WWN351Interchangeable
interchangeable cross-reference
interchangeable
13275AInterchangeable
interchangeable cross-reference
interchangeable
ASTM-B687Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B687R-1CP?
B687R-1CP is a RESISTOR,FIXED,WIRE WOUND.
What parts can replace B687R-1CP?
There are 26 known substitutes for B687R-1CP: MS51846-99, 765260-025, B687 and 23 more. Substitute compatibility should be verified for your specific system.
Is B687R-1CP still available?
B687R-1CP is currently cancelled.
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Last verified: July 2026