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18-987 — RESISTOR,VARIABLE,WIRE WOUND,NON

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

18-987: RESISTOR,VARIABLE,WIRE WOUND,NON.

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include end_item_identification: 4187400-88566 PACKBOT ROBOT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-193-0551, 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→ 18-987
NSN: 5340-00-193-0551
NIINs: 001930551, 002835850, 015983101
FSC: 5340 — Hardware, Commercial
CAGE: 34830 — ROGERSON KRATOS (USA)
SPECIFICATIONS
end_item_identification4187400-88566 PACKBOT ROBOT
NSN5340-00-193-0551
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 18-987 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MOUNTING HOLE SIZE: 0.093 INCHES NOMINAL IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 1.284 INCHES MINIMUM AND 1.316 INCHES MAXIMUM IN
•
MOUNTING PAD: NOT INCLUDED
•
STYLE DESIGNATOR: STRAIGHT ARCH
•
MATERIAL THICKNESS: 0.050 INCHES NOMINAL IN
•
CUSHION: NOT INCLUDED
TECHNICAL CHARACTERISTICS
MOUNTING HOLE SIZE0.093 INCHES NOMINAL IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS1.284 INCHES MINIMUM AND 1.316 INCHES MAXIMUM IN
MOUNTING PADNOT INCLUDED
STYLE DESIGNATORSTRAIGHT ARCH
OVERALL LENGTH1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN
OVERALL WIDTH0.200 INCHES NOMINAL IN
MATERIAL THICKNESS0.050 INCHES NOMINAL IN
CUSHIONNOT INCLUDED
DISTANCE BETWEEN BASE AND INSIDE OF ARCH0.337 INCHES NOMINAL IN
SPECIAL FEATURESCENTER MTG HOLE,2-56 UNC
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 18-987?
18-987 is a RESISTOR,VARIABLE,WIRE WOUND,NON. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 18-987?
18-987 is cataloged in the U.S. Government catalog under NSN 5340-00-193-0551. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.