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Technical Data Sheet
PartsTable / COMPONENT / TB1187-1
TB1187-1 ✓ 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

PARTS KIT,PROPELLER BALANCE,WEIG. Key specifications include material: STEEL, thread_size: 9/16-24, thread_class: 2B, thread_length: 0.250 INCHES NOMINAL IN, overall_length: 0.485 INCHES NOMINAL IN, special_features: SURFACE TREATMENT: ZINC ALLOY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-608-6168, 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
TB1187-1
NSN: 4730-00-608-6168
FSC: 4730
CAGE: 10577 — TODD SHIPYARDS CORP HOUSTON DIV (USA)
SPECIFICATIONS
materialSTEEL
thread_size9/16-24
thread_class2B
thread_length0.250 INCHES NOMINAL IN
overall_length0.485 INCHES NOMINAL IN
special_featuresSURFACE TREATMENT: ZINC ALLOY
style_designatorROUND, INTERNAL THREAD, SHOULDERED
thread_directionRIGHT-HAND
surface_treatmentZINC
length_to_shoulder0.281 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
protrusion_quantity12
screw_thread_locationINTERNAL
NSN4730-00-608-6168
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: TB1187-1 · 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
•
LENGTH TO SHOULDER: 0.281 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
•
PROTRUSION QUANTITY: 12
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
SMALLEST INSIDE DIAMETER: 0.328 INCHES NOMINAL IN
•
SCREW THREAD LOCATION: INTERNAL
•
MAJOR UNTHREADED OUTSIDE DIAMETER: 0.750 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH TO SHOULDER0.281 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
PROTRUSION QUANTITY12
CRITICALITY CODE JUSTIFICATIONFEAT
SMALLEST INSIDE DIAMETER0.328 INCHES NOMINAL IN
SCREW THREAD LOCATIONINTERNAL
MAJOR UNTHREADED OUTSIDE DIAMETER0.750 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
SPECIAL FEATURESSURFACE TREATMENT: ZINC ALLOY
MATERIALSTEEL
SURFACE TREATMENTZINC
STYLE DESIGNATORROUND, INTERNAL THREAD, SHOULDERED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
7390-9Interchangeable
interchangeable cross-reference
interchangeable
23977Interchangeable
interchangeable cross-reference
interchangeable
123DME0217-1Interchangeable
interchangeable cross-reference
interchangeable
PS73909Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TB1187-1?
TB1187-1 is a PARTS KIT,PROPELLER BALANCE,WEIG.
What parts can replace TB1187-1?
There are 4 known substitutes for TB1187-1: 7390-9, 23977, 123DME0217-1 and 1 more. Substitute compatibility should be verified for your specific system.
Is TB1187-1 still available?
TB1187-1 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