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188090 — BOLT,MTG LEVELING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

188090: BOLT,MTG LEVELING.

The BOLT,MTG LEVELING is a the manufacturer industrial component. Key specifications include end_item_identification: AIRPORT SURVEILLANCE DETECTION EQUIPMENT 3(ASDE3). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-550-3893, 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
188090
NSN: 5310-00-550-3893
NIINs: 005503893, 014437503
FSC: 5310 — Nuts and Washers
CAGE: 61062 — COMET MFG CO INC (USA)
SPECIFICATIONS
end_item_identificationAIRPORT SURVEILLANCE DETECTION EQUIPMENT 3(ASDE3)
NSN5310-00-550-3893
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 188090 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
NUT HEIGHT: 0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.164 INCHES IN
NUT HEIGHT0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
NUT STYLEHEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH32
SUBSTITUTES & CROSS-REFERENCES 2
SRS188090Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
308252Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 188090?
188090 is a BOLT,MTG LEVELING.
What parts can replace 188090?
There are 2 known substitutes for 188090: SRS188090, 308252. Substitute compatibility should be verified for your specific system.
What is the NSN for 188090?
188090 is cataloged in the U.S. Government catalog under NSN 5310-00-550-3893. 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.