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Technical Data Sheet

B-687 — Technical Data Sheet

✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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, body_width: 1.720 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN, leg_length: 0.891 INCHES NOMINAL SECOND END IN, link_style: PIN, body_height: 1.970 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN, body_length: 2.970 INCHES MINIMUM AND 3.030 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System 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
MRO→ MRO_GENERAL→ B-687
NSN: 4730-00-050-1989
FSC: 4730
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
body_width1.720 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN
leg_length0.891 INCHES NOMINAL SECOND END IN
link_stylePIN
body_height1.970 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
body_length2.970 INCHES MINIMUM AND 3.030 INCHES MAXIMUM IN
corner_shapeSQUARE ALL CORNERS
terminal_typeTAB W/WIRE LEAD W/TAB
inclosure_typeENCAPSULATED
overall_length0.8750 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
NSN4730-00-050-1989
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B-687 · 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
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 27
MS51846-99InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
765260-025InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
WWN351InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
13275AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ASTM-B687InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
DD421S49-0229PC505InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-687?
B-687 is a RESISTOR,FIXED,WIRE WOUND. It is classified as a MRO (MRO_GENERAL).
What parts can replace B-687?
There are 27 known substitutes for B-687: MS51846-99, 765260-025, WWN351 and 24 more. Substitute compatibility should be verified for your specific system.
Is B-687 still available?
B-687 is currently cancelled.
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