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PartsTable / COMPONENT / 9166-1
9166-1 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The TRANSFORMER ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 4.000 FEET NOMINAL FT, special_features: DWG TITLE CHAIN, COIL, STRAIGHT LINK, style_designator: LONG LINK, surface_treatment: ZINC OVERALL, fsc_application_data: GROUND SUPPORT EQUIPMENT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-514-4638, 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
9166-1
NSN: 5310-00-514-4638
FSC: 5310
CAGE: 89109 — GRAHAM PAIGE CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length4.000 FEET NOMINAL FT
special_featuresDWG TITLE CHAIN, COIL, STRAIGHT LINK
style_designatorLONG LINK
surface_treatmentZINC OVERALL
fsc_application_dataGROUND SUPPORT EQUIPMENT
end_item_identificationC-17A A
NSN5310-00-514-4638
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9166-1 · 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
•
NUT HEIGHT: 0.266 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 24
•
HARDNESS RATING: 11.0 ROCKWELL C MINIMUM AND 17.0 ROCKWELL C MAXIMUM
•
THREAD SERIES: UNF
•
BEARING SURFACE TYPE: WASHER FACED
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.266 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
THREAD QUANTITY PER INCH24
HARDNESS RATING11.0 ROCKWELL C MINIMUM AND 17.0 ROCKWELL C MAXIMUM
THREAD SERIESUNF
BEARING SURFACE TYPEWASHER FACED
NOMINAL THREAD SIZE0.375 INCHES IN
NUT STYLEHEXAGON
MATERIALSTEEL COMP 4615 OVERALL
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
186AInterchangeable
interchangeable cross-reference
interchangeable
10003969Interchangeable
interchangeable cross-reference
interchangeable
TV-401 TYPE2Interchangeable
interchangeable cross-reference
interchangeable
11739028Interchangeable
interchangeable cross-reference
interchangeable
9166-1Interchangeable
interchangeable cross-reference
interchangeable
75201A17Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9166-1?
9166-1 is a TRANSFORMER ASSEMBLY.
What parts can replace 9166-1?
There are 20 known substitutes for 9166-1: 186A, 10003969, TV-401 TYPE2 and 17 more. Substitute compatibility should be verified for your specific system.
Is 9166-1 still available?
9166-1 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